This worked for me.
application.properties
, used jdbc-url instead of url:
datasource.apidb.jdbc-url=jdbc:mysql://localhost:3306/apidb?useSSL=false
datasource.apidb.username=root
datasource.apidb.password=123
datasource.apidb.driver-class-name=com.mysql.jdbc.Driver
Configuration class:
@Configuration
@EnableJpaRepositories(
entityManagerFactoryRef = "fooEntityManagerFactory",
basePackages = {"com.buddhi.multidatasource.foo.repository"}
)
public class FooDataSourceConfig {
@Bean(name = "fooDataSource")
@ConfigurationProperties(prefix = "datasource.foo")
public HikariDataSource dataSource() {
return DataSourceBuilder.create().type(HikariDataSource.class).build();
}
@Bean(name = "fooEntityManagerFactory")
public LocalContainerEntityManagerFactoryBean fooEntityManagerFactory(
EntityManagerFactoryBuilder builder,
@Qualifier("fooDataSource") DataSource dataSource
) {
return builder
.dataSource(dataSource)
.packages("com.buddhi.multidatasource.foo.model")
.persistenceUnit("fooDb")
.build();
}
}
Use all the jackson dependencies(databind,core, annotations, scala(if you are using spark and scala)) with the same version.. and upgrade the versions to the latest releases..
<dependency>
<groupId>com.fasterxml.jackson.module</groupId>
<artifactId>jackson-module-scala_2.11</artifactId>
<version>2.9.4</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.9.4</version>
<exclusions>
<exclusion>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
</exclusion>
<exclusion>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.9.4</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-annotations</artifactId>
<version>2.9.4</version>
</dependency>
Note: Use Scala dependency only if you are working with scala. Otherwise it is not needed.
This is what worked for me. Issue is earlier I didn't set Content Type(header) when I used exchange method.
MultiValueMap<String, String> map = new LinkedMultiValueMap<String, String>();
map.add("param1", "123");
map.add("param2", "456");
map.add("param3", "789");
map.add("param4", "123");
map.add("param5", "456");
HttpHeaders headers = new HttpHeaders();
headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
final HttpEntity<MultiValueMap<String, String>> entity = new HttpEntity<MultiValueMap<String, String>>(map ,
headers);
JSONObject jsonObject = null;
try {
RestTemplate restTemplate = new RestTemplate();
ResponseEntity<String> responseEntity = restTemplate.exchange(
"https://url", HttpMethod.POST, entity,
String.class);
if (responseEntity.getStatusCode() == HttpStatus.CREATED) {
try {
jsonObject = new JSONObject(responseEntity.getBody());
} catch (JSONException e) {
throw new RuntimeException("JSONException occurred");
}
}
} catch (final HttpClientErrorException httpClientErrorException) {
throw new ExternalCallBadRequestException();
} catch (HttpServerErrorException httpServerErrorException) {
throw new ExternalCallServerErrorException(httpServerErrorException);
} catch (Exception exception) {
throw new ExternalCallServerErrorException(exception);
}
ExternalCallBadRequestException and ExternalCallServerErrorException are the custom exceptions here.
Note: Remember HttpClientErrorException is thrown when a 4xx error is received. So if the request you send is wrong either setting header or sending wrong data, you could receive this exception.
The issue is that you are not able to get a connection to MYSQL database and hence it is throwing an error saying that cannot build a session factory.
Please see the error below:
Caused by: java.sql.SQLException: Access denied for user ''@'localhost' (using password: NO)
which points to username
not getting populated
.
Please recheck system properties
dataSource.setUsername(System.getProperty("root"));
some packages seems to be missing as well pointing to a dependency issue:
package org.gjt.mm.mysql does not exist
Please run a mvn dependency:tree
command to check for dependencies
I have been facing the same problem and for multidex support, you have to keep in mind the minSdkVersion of your application. If you are using minSdkVersion 21 or above then just write multiDexEnabled true like this
defaultConfig {
applicationId *******************
minSdkVersion 21
targetSdkVersion 24
versionCode 1
versionName "1.0"
multiDexEnabled true
}
It works for me and if you are using minSdkVersion below 21 (below lolipop) then you have to do two extra simple things
1. First add this dependency
compile 'com.android.support:multidex:1.0.1'
in your build.gradle.
2. Last and second add one this below line to your application in manifest
android:name="android.support.multidex.MultiDexApplication"
<application
android:allowBackup="true"
android:icon="@mipmap/ic_launcher"
android:label="@string/app_name"
android:supportsRtl="true"
android:name="android.support.multidex.MultiDexApplication"
android:theme="@style/AppTheme" >
<activity android:name=".MainActivity" >
<intent-filter>
<action android:name="android.intent.action.MAIN" />
<category android:name="android.intent.category.LAUNCHER" />
</intent-filter>
</activity>
</application>
Bingo then it will work in the lower version also..:) Happy coding
While T. Arboreus's answer might fix the issues with resolving 'archive.ubuntu.com', I think the last error you're getting says that it doesn't know about the packages php5-mcrypt
and python-pip
.
Nevertheless, the reduced Dockerfile of you with just these two packages worked for me (using Debian 8.4 and Docker 1.11.0), but I'm not quite sure if that could be the case because my host system is different than yours.
FROM ubuntu:14.04
# Install dependencies
RUN apt-get update && apt-get install -y \
php5-mcrypt \
python-pip
However, according to this answer you should think about installing the python3-pip
package instead of the python-pip
package when using Python 3.x.
Furthermore, to make the php5-mcrypt
package installation working, you might want to add the universe repository like it's shown right here. I had trouble with the add-apt-repository
command missing in the Ubuntu Docker image so I installed the package software-properties-common
at first to make the command available.
Splitting up the statements and putting apt-get update
and apt-get install
into one RUN
command is also recommended here.
Oh and by the way, you actually don't need the -y
flag at apt-get update
because there is nothing that has to be confirmed automatically.
FROM ubuntu:14.04
# Install dependencies
RUN apt-get update && apt-get install -y \
software-properties-common
RUN add-apt-repository universe
RUN apt-get update && apt-get install -y \
apache2 \
curl \
git \
libapache2-mod-php5 \
php5 \
php5-mcrypt \
php5-mysql \
python3.4 \
python3-pip
Remark: The used versions (e.g. of Ubuntu) might be outdated in the future.
From stack trace:
HikariPool: Timeout failure pool HikariPool-0 stats (total=20, active=20, idle=0, waiting=0) Means pool reached maximum connections limit set in configuration.
The next line: HikariPool-0 - Connection is not available, request timed out after 30000ms. Means pool waited 30000ms for free connection but your application not returned any connection meanwhile.
Mostly it is connection leak (connection is not closed after borrowing from pool), set leakDetectionThreshold to the maximum value that you expect SQL query would take to execute.
otherwise, your maximum connections 'at a time' requirement is higher than 20 !
Naive question: Is it possible to somehow download GLIBC 2.15, put it in any folder (e.g. /tmp/myglibc) and then point to this path ONLY when executing something that needs this specific version of glibc?
Yes, it's possible.
The MySQL dependency should be like the following syntax in the pom.xml file.
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.21</version>
</dependency>
Make sure the syntax, groupId, artifactId, Version has included in the dependancy.
[I mentioned this in response to the selected answer, but it was suggested to make it more prominent as an answer of its own]
It should be noted that
ENV PATH="/opt/gtk/bin:${PATH}"
may not be the same as
ENV PATH="/opt/gtk/bin:$PATH"
The former, with curly brackets, might provide you with the host's PATH. The documentation doesn't suggest this would be the case, but I have observed that it is. This is simple to check just do RUN echo $PATH
and compare it to RUN echo ${PATH}
Adding the Tomcat server in the server runtime will do the job:
Right click your project and than;
Project properties ? Target Runtimes ? Select/Check "Apache Tomcat" ? Finish.
In spring boot for jpa java config you need to extend JpaBaseConfiguration and implement it's abstract methods.
@Configuration
public class JpaConfig extends JpaBaseConfiguration {
@Override
protected AbstractJpaVendorAdapter createJpaVendorAdapter() {
final HibernateJpaVendorAdapter vendorAdapter = new HibernateJpaVendorAdapter();
return vendorAdapter;
}
@Override
protected Map<String, Object> getVendorProperties() {
Map<String, Object> properties = new HashMap<>();
properties.put("hibernate.dialect", "org.hibernate.dialect.PostgreSQLDialect");
}
}
DSO here means Dynamic Shared Object; since the error message says it's missing from the command line, I guess you have to add it to the command line.
That is, try adding -lpthread
to your command line.
GCC 4.9 introduces a newer C++ ABI version than your system libstdc++ has, so you need to tell the loader to use this newer version of the library by adding that path to LD_LIBRARY_PATH
. Unfortunately, I cannot tell you straight off where the libstdc++ so for your GCC 4.9 installation is located, as this depends on how you configured GCC. So you need something in the style of:
export LD_LIBRARY_PATH=/home/user/lib/gcc-4.9.0/lib:/home/user/lib/boost_1_55_0/stage/lib:$LD_LIBRARY_PATH
Note the actual path may be different (there might be some subdirectory hidden under there, like `x86_64-unknown-linux-gnu/4.9.0´ or similar).
for me, (OSX) the problem was solved doing this:
brew install pkg-config
I've been fighting with this issue for a long time, and just y'day I figure out how to make it gone and today I can run a 50 threads process calling selenium without seen this issue anymore and also stop crashing my machine with outofmemory issue with too many open chromedriver processes.
these 4 items are the basic setting everyone would already know, now comes the code, where all made a lot of difference to achieve the success:
public class HttpWebClient {
public static ChromeDriverService service;
public ThreadLocal<WebDriver> threadWebDriver = new ThreadLocal<WebDriver>(){
@Override
protected WebDriver initialValue() {
FirefoxProfile profile = new FirefoxProfile();
profile.setPreference("permissions.default.stylesheet", 2);
profile.setPreference("permissions.default.image", 2);
profile.setPreference("dom.ipc.plugins.enabled.libflashplayer.so", "false");
profile.setPreference(FirefoxProfile.ALLOWED_HOSTS_PREFERENCE, "localhost");
WebDriver driver = new FirefoxDriver(profile);
return driver;
};
};
public HttpWebClient(){
// fix for headless systems:
// start service first, this will create an instance at system and every time you call the
// browser will be used
// be sure you start the service only if there are no alive instances, that will prevent you to have
// multiples chromedrive instances causing it to crash
try{
if (service==null){
service = new ChromeDriverService.Builder()
.usingDriverExecutable(new File(conf.get("webdriver.chrome.driver"))) // set the chromedriver path at your system
.usingAnyFreePort()
.withEnvironment(ImmutableMap.of("DISPLAY", ":15"))
.withSilent(true)
.build();
service.start();
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
// my Configuration class is for good and easy setting, you can replace it by using values instead.
public WebDriver getDriverForPage(String url, Configuration conf) {
WebDriver driver = null;
DesiredCapabilities capabilities = null;
long pageLoadWait = conf.getLong("page.load.delay", 60);
try {
System.setProperty("webdriver.chrome.driver", conf.get("webdriver.chrome.driver"));
String driverType = conf.get("selenium.driver", "chrome");
capabilities = DesiredCapabilities.chrome();
String[] options = new String[] { "--start-maximized", "--headless" };
capabilities.setCapability("chrome.switches", options);
// here is where your chromedriver will call the browser
// I used to call the class ChromeDriver directly, which was causing too much problems
// when you have multiple calls
driver = new RemoteWebDriver(service.getUrl(), capabilities);
driver.manage().timeouts().pageLoadTimeout(pageLoadWait, TimeUnit.SECONDS);
driver.get(url);
// never look back
} catch (Exception e) {
if (e instanceof TimeoutException) {
LOG.debug("Crawling URL : "+url);
LOG.debug("Selenium WebDriver: Timeout Exception: Capturing whatever loaded so far...");
return driver;
}
cleanUpDriver(driver);
throw new RuntimeException(e);
}
return driver;
}
public void cleanUpDriver(WebDriver driver) {
if (driver != null) {
try {
// be sure to close every driver you opened
driver.close();
driver.quit();
//service.stop(); do not stop the service, bcz it is needed
TemporaryFilesystem.getDefaultTmpFS().deleteTemporaryFiles();
} catch (Exception e) {
throw new RuntimeException(e);
}
}
}
}
Good luck and I hope you don't see that crash issue anymore
Please comment your success
Best regards,
I found solution. It works fine when I throw away next line from form:
enctype="multipart/form-data"
And now it pass all parameters at request ok:
<form action="/registration" method="post">
<%-- error messages --%>
<div class="form-group">
<c:forEach items="${registrationErrors}" var="error">
<p class="error">${error}</p>
</c:forEach>
</div>
Using Docker, you may run this command to get Redis CLI:
docker run -it --rm redis redis-cli -h redis.mycompany.org -p 6379
where redis
is the redis
docker image from Docker Hub,
redis-cli
is pre-installed in that image, and all after that are parameters to redis-cli
:
-h
is hostname to connect to,
-p
is apparently the port to connect to.
In my case, spring configurations were not loaded as expected. On running from cmd using below command, it worked:
start java -Xms512m -Xmx1024m <and the usual parameters as needed, like PrintGC etc> -Dspring.config.location=<propertiesfiles> -jar <jar>
The solution at my end was to explicitly add a JoinColumn annotation like this:
@JoinColumn(name="mapping_type_id")
The column name is usually the table name + "_id" if there is an id field. Additionally, keep in mind which field it should be based on the relationship, OneToMany or ManyToOne.
Hope this helps.
you can read empList
directly in forEach
tag.Try this
<table>
<c:forEach items="${sessionScope.empList}" var="employee">
<tr>
<td>Employee ID: <c:out value="${employee.eid}"/></td>
<td>Employee Pass: <c:out value="${employee.ename}"/></td>
</tr>
</c:forEach>
</table>
This problem can be caused also by jvm version used to compile the project and the jvm supported by the servlet container. Try to Fix the project build path. For example if you deploy on tomcat 9, use jvm 1.8.0 or lower.
You should mention the library on the command line after the object files being compiled:
gcc -Wstrict-prototypes -Wall -Wno-sign-compare -Wpointer-arith -Wdeclaration-after-statement -Wformat-security -Wswitch-enum -Wunused-parameter -Wstrict-aliasing -Wbad-function-cast -Wcast-align -Wstrict-prototypes -Wold-style-definition -Wmissing-prototypes -Wmissing-field-initializers -Wno-override-init \
-g -O2 -export-dynamic -o utilities/ovs-dpctl utilities/ovs-dpctl.o \
lib/libopenvswitch.a \
/home/jyyoo/src/dpdk/build/lib/librte_eal.a /home/jyyoo/src/dpdk/build/lib/libethdev.a /home/jyyoo/src/dpdk/build/lib/librte_cmdline.a /home/jyyoo/src/dpdk/build/lib/librte_hash.a /home/jyyoo/src/dpdk/build/lib/librte_lpm.a /home/jyyoo/src/dpdk/build/lib/librte_mbuf.a /home/jyyoo/src/dpdk/build/lib/librte_ring.a /home/jyyoo/src/dpdk/build/lib/librte_mempool.a /home/jyyoo/src/dpdk/build/lib/librte_malloc.a \
-lrt -lm -lpthread
Explanation: the linking is dependent on the order of modules. Symbols are first requested, and then linked in from a library that has them. So you have to specify modules that use libraries first, and libraries after them. Like this:
gcc x.o y.o z.o -la -lb -lc
Moreover, in case there's a circular dependency, you should specify the same library on the command line several times. So in case libb
needs symbol from libc
and libc
needs symbol from libb
, the command line should be:
gcc x.o y.o z.o -la -lb -lc -lb
If someone has the same issue as I had - make sure that you don't install from the Ubuntu 14.04 repo onto a 12.04 machine - it gives this same error. Reinstalling from the proper repository fixed the issue.
This is the normal behavior and the reason is that your sqlCommandHandlerService.persist
method needs a TX when being executed (because it is marked with @Transactional
annotation). But when it is called inside processNextRegistrationMessage
, because there is a TX available, the container doesn't create a new one and uses existing TX. So if any exception occurs in sqlCommandHandlerService.persist
method, it causes TX to be set to rollBackOnly
(even if you catch the exception in the caller and ignore it).
To overcome this you can use propagation levels for transactions. Have a look at this to find out which propagation best suits your requirements.
Well after a colleague came to me with a couple of questions about a similar situation, I feel this needs a bit of clarification.
Although propagations solve such issues, you should be VERY careful about using them and do not use them unless you ABSOLUTELY understand what they mean and how they work. You may end up persisting some data and rolling back some others where you don't expect them to work that way and things can go horribly wrong.
Look for exceptions being thrown and caught in the ...
sections of your code. Runtime and rollbacking application exceptions cause rollback when thrown out of a business method even if caught on some other place.
You can use context to find out whether the transaction is marked for rollback.
@Resource
private SessionContext context;
context.getRollbackOnly();
Faced exactly the same issue while upgrading my application from java 6 to java 8 on tomcat 7.0.19. After upgrading the tomcat to 7.0.59, this issue is resolved.
For me, restarting Eclipse got rid of this error!
Tomcat usually does not add classes in src/test/java
to the classpath. They are missing if you run tomcat in scope test. To order tomcat to respect classes in test, use -Dmaven.tomcat.useTestClasspath=true
or add
<properties>
<maven.tomcat.useTestClasspath>true</maven.tomcat.useTestClasspath>
</properties>
To your pom.xml
.
Your user.jsp:
<form:form action="profile/proffesional" modelAttribute="PROFESSIONAL">
---
---
</form:form>
In your controller class:
(make it as a meaning full method name..Hear i think you are insert record in DB.)
@RequestMapping(value = "proffessional", method = RequestMethod.POST)
public @ResponseBody
String proffessionalDetails(
@ModelAttribute UserProfessionalForm professionalForm,
BindingResult result, Model model) {
UserProfileVO userProfileVO = new UserProfileVO();
userProfileVO.setUser(sessionData.getUser());
userService.saveUserProfile(userProfileVO);
model.addAttribute("PROFESSIONAL", professionalForm);
return "Your Professional Details Updated";
}
The m2e plugin generate project configuration every time when you update project (Maven->Update Project ... That action overrides facets setting configured manually in Eclipse. Therefore you have to configure it on pom level. By setting properties in pom file you can tell m2e plugin what to do.
Enable/Disable the JAX-RS/JPA/JSF Configurators at the pom.xml level The optional JAX-RS, JPA and JSF configurators can be enabled or disabled at a workspace level from Window > Preferences > Maven > Java EE Integration. Now, you can have a finer grain control on these configurators directly from your pom.xml properties :
Adding false in your pom properties section will disable the JAX-RS configurator Adding false in your pom properties section will disable the JPA configurator Adding false in your pom properties section will disable the JSF configurator The pom settings always override the workspace preferences. So if you have, for instance the JPA configurator disabled at the workspace level, using true will enable it on your project anyway. (http://wiki.eclipse.org/M2E-WTP/New_and_Noteworthy/1.0.0)
Heap overflow should be blame (but not always) for corrupted double-linked list
, malloc(): memory corruption
, double free or corruption (!prev)
-like glibc warnings.
It should be reproduced by the following code:
#include <vector>
using std::vector;
int main(int argc, const char *argv[])
{
int *p = new int[3];
vector<int> vec;
vec.resize(100);
p[6] = 1024;
delete[] p;
return 0;
}
if compiled using g++ (4.5.4):
$ ./heapoverflow
*** glibc detected *** ./heapoverflow: double free or corruption (!prev): 0x0000000001263030 ***
======= Backtrace: =========
/lib64/libc.so.6(+0x7af26)[0x7f853f5d3f26]
./heapoverflow[0x40138e]
./heapoverflow[0x400d9c]
./heapoverflow[0x400bd9]
./heapoverflow[0x400aa6]
./heapoverflow[0x400a26]
/lib64/libc.so.6(__libc_start_main+0xfd)[0x7f853f57b4bd]
./heapoverflow[0x4008f9]
======= Memory map: ========
00400000-00403000 r-xp 00000000 08:02 2150398851 /data1/home/mckelvin/heapoverflow
00602000-00603000 r--p 00002000 08:02 2150398851 /data1/home/mckelvin/heapoverflow
00603000-00604000 rw-p 00003000 08:02 2150398851 /data1/home/mckelvin/heapoverflow
01263000-01284000 rw-p 00000000 00:00 0 [heap]
7f853f559000-7f853f6fa000 r-xp 00000000 09:01 201329536 /lib64/libc-2.15.so
7f853f6fa000-7f853f8fa000 ---p 001a1000 09:01 201329536 /lib64/libc-2.15.so
7f853f8fa000-7f853f8fe000 r--p 001a1000 09:01 201329536 /lib64/libc-2.15.so
7f853f8fe000-7f853f900000 rw-p 001a5000 09:01 201329536 /lib64/libc-2.15.so
7f853f900000-7f853f904000 rw-p 00000000 00:00 0
7f853f904000-7f853f919000 r-xp 00000000 09:01 74726670 /usr/lib64/gcc/x86_64-pc-linux-gnu/4.8.1/libgcc_s.so.1
7f853f919000-7f853fb19000 ---p 00015000 09:01 74726670 /usr/lib64/gcc/x86_64-pc-linux-gnu/4.8.1/libgcc_s.so.1
7f853fb19000-7f853fb1a000 r--p 00015000 09:01 74726670 /usr/lib64/gcc/x86_64-pc-linux-gnu/4.8.1/libgcc_s.so.1
7f853fb1a000-7f853fb1b000 rw-p 00016000 09:01 74726670 /usr/lib64/gcc/x86_64-pc-linux-gnu/4.8.1/libgcc_s.so.1
7f853fb1b000-7f853fc11000 r-xp 00000000 09:01 201329538 /lib64/libm-2.15.so
7f853fc11000-7f853fe10000 ---p 000f6000 09:01 201329538 /lib64/libm-2.15.so
7f853fe10000-7f853fe11000 r--p 000f5000 09:01 201329538 /lib64/libm-2.15.so
7f853fe11000-7f853fe12000 rw-p 000f6000 09:01 201329538 /lib64/libm-2.15.so
7f853fe12000-7f853fefc000 r-xp 00000000 09:01 74726678 /usr/lib64/gcc/x86_64-pc-linux-gnu/4.8.1/libstdc++.so.6.0.18
7f853fefc000-7f85400fb000 ---p 000ea000 09:01 74726678 /usr/lib64/gcc/x86_64-pc-linux-gnu/4.8.1/libstdc++.so.6.0.18
7f85400fb000-7f8540103000 r--p 000e9000 09:01 74726678 /usr/lib64/gcc/x86_64-pc-linux-gnu/4.8.1/libstdc++.so.6.0.18
7f8540103000-7f8540105000 rw-p 000f1000 09:01 74726678 /usr/lib64/gcc/x86_64-pc-linux-gnu/4.8.1/libstdc++.so.6.0.18
7f8540105000-7f854011a000 rw-p 00000000 00:00 0
7f854011a000-7f854013c000 r-xp 00000000 09:01 201328977 /lib64/ld-2.15.so
7f854031c000-7f8540321000 rw-p 00000000 00:00 0
7f8540339000-7f854033b000 rw-p 00000000 00:00 0
7f854033b000-7f854033c000 r--p 00021000 09:01 201328977 /lib64/ld-2.15.so
7f854033c000-7f854033d000 rw-p 00022000 09:01 201328977 /lib64/ld-2.15.so
7f854033d000-7f854033e000 rw-p 00000000 00:00 0
7fff92922000-7fff92943000 rw-p 00000000 00:00 0 [stack]
7fff929ff000-7fff92a00000 r-xp 00000000 00:00 0 [vdso]
ffffffffff600000-ffffffffff601000 r-xp 00000000 00:00 0 [vsyscall]
[1] 18379 abort ./heapoverflow
and if compiled using clang++(6.0 (clang-600.0.56)):
$ ./heapoverflow
[1] 96277 segmentation fault ./heapoverflow
If you thought you might have written a bug like that, here is some hints to trace it out.
First, compile the code with debug flag(-g
):
g++ -g foo.cpp
And then, run it using valgrind:
$ valgrind ./a.out
==12693== Memcheck, a memory error detector
==12693== Copyright (C) 2002-2013, and GNU GPL'd, by Julian Seward et al.
==12693== Using Valgrind-3.10.1 and LibVEX; rerun with -h for copyright info
==12693== Command: ./a.out
==12693==
==12693== Invalid write of size 4
==12693== at 0x400A25: main (foo.cpp:11)
==12693== Address 0x5a1c058 is 12 bytes after a block of size 12 alloc'd
==12693== at 0x4C2B800: operator new[](unsigned long) (in /usr/lib/valgrind/vgpreload_memcheck-amd64-linux.so)
==12693== by 0x4009F6: main (foo.cpp:8)
==12693==
==12693==
==12693== HEAP SUMMARY:
==12693== in use at exit: 0 bytes in 0 blocks
==12693== total heap usage: 2 allocs, 2 frees, 412 bytes allocated
==12693==
==12693== All heap blocks were freed -- no leaks are possible
==12693==
==12693== For counts of detected and suppressed errors, rerun with: -v
==12693== ERROR SUMMARY: 1 errors from 1 contexts (suppressed: 0 from 0)
The bug is located in ==12693== at 0x400A25: main (foo.cpp:11)
<@include>
- The directive tag instructs the JSP compiler to merge contents of the included file into the JSP before creating the generated servlet code. It is the equivalent to cutting and pasting the text from your include page right into your JSP.
<jsp:include>
- The JSP Action tag on the other hand instructs the container to pause the execution of this page, go run the included page, and merge the output from that page into the output from this page.
Depending on your needs, you may either use
<@include>
or<jsp:include>
Using Following Code You Solve thisQuestion.... If you run a file using localhost server than this problem solve by following Jsp Page Code.This Code put Between Head Tag in jsp file
<style type="text/css">
<%@include file="css/style.css" %>
</style>
<script type="text/javascript">
<%@include file="js/script.js" %>
</script>
Try
make clean
./configure --with-option=/path/etc
make && make install
Missing prerequisites. IBM has the solution below:
yum install gtk2.i686
yum install libXtst.i686
If you received the the missing libstdc++ message above,
install the libstdc++ library:
yum install compat-libstdc++
https://www-304.ibm.com/support/docview.wss?uid=swg21459143
I was getting this problem with a maven project using the eclipse IDE. I changed the 'Order and Export' in the project's build path putting the Maven dependencies first and the error disappeared. I guess it's because the eclipse IDE was initially building my application source before loading the Maven libraries.
1 - Your malloc() is wrong.
2 - You are overstepping the bounds of the allocated memory
3 - You should initialize your allocated memory
Here is the program with all the changes needed. I compiled and ran... no errors or warnings.
#include <stdio.h>
#include <stdlib.h> //malloc
#include <math.h> //sine
#include <string.h>
#define TIME 255
#define HARM 32
int main (void) {
double sineRads;
double sine;
int tcount = 0;
int hcount = 0;
/* allocate some heap memory for the large array of waveform data */
double *ptr = malloc(sizeof(double) * TIME);
//memset( ptr, 0x00, sizeof(double) * TIME); may not always set double to 0
for( tcount = 0; tcount < TIME; tcount++ )
{
ptr[tcount] = 0;
}
tcount = 0;
if (NULL == ptr) {
printf("ERROR: couldn't allocate waveform memory!\n");
} else {
/*evaluate and add harmonic amplitudes for each time step */
for(tcount = 0; tcount < TIME; tcount++){
for(hcount = 0; hcount <= HARM; hcount++){
sineRads = ((double)tcount / (double)TIME) * (2*M_PI); //angular frequency
sineRads *= (hcount + 1); //scale frequency by harmonic number
sine = sin(sineRads);
ptr[tcount] += sine; //add to other results for this time step
}
}
free(ptr);
ptr = NULL;
}
return 0;
}
In my case following code was a problem:
entityManager.detach(topicById);
topicById.getComments() // exception thrown
Because it detached from the database and Hibernate no longer retrieved list from the field when it was needed. So I initialize it before detaching:
Hibernate.initialize(topicById.getComments());
entityManager.detach(topicById);
topicById.getComments() // works like a charm
There is a special security expression in spring security:
hasAnyRole(list of roles) - true if the user has been granted any of the roles specified (given as a comma-separated list of strings).
I have never used it but I think it is exactly what you are looking for.
Example usage:
<security:authorize access="hasAnyRole('ADMIN', 'DEVELOPER')">
...
</security:authorize>
Here is a link to the reference documentation where the standard spring security expressions are described. Also, here is a discussion where I described how to create custom expression if you need it.
I was able to install libc6 2.17
in Debian Wheezy
by editing the recommendations in perror's answer:
IMPORTANT
You need to exit out of your display manager by pressing CTRL-ALT-F1.
Then you can stop x (slim
) with sudo /etc/init.d/slim stop
(replace slim with mdm
or lightdm
or whatever)
Add the following line to the file /etc/apt/sources.list
:
deb http://ftp.debian.org/debian experimental main
Should be changed to:
deb http://ftp.debian.org/debian sid main
Then follow the rest of perror's post:
Update your package database:
apt-get update
Install the eglibc
package:
apt-get -t sid install libc6-amd64 libc6-dev libc6-dbg
IMPORTANT
After done updating libc6
, restart computer, and you should comment out or remove the sid source you just added (deb http://ftp.debian.org/debian sid main
), or else you risk upgrading your whole distro to sid.
Hope this helps. It took me a while to figure out.
What exactly do you want to know?
The shared library soname? That's part of the filename, libstdc++.so.6
, or shown by readelf -d /usr/lib64/libstdc++.so.6 | grep soname
.
The minor revision number? You should be able to get that by simply checking what the symlink points to:
$ ls -l /usr/lib/libstdc++.so.6
lrwxrwxrwx. 1 root root 19 Mar 23 09:43 /usr/lib/libstdc++.so.6 -> libstdc++.so.6.0.16
That tells you it's 6.0.16, which is the 16th revision of the libstdc++.so.6
version, which corresponds to the GLIBCXX_3.4.16
symbol versions.
Or do you mean the release it comes from? It's part of GCC so it's the same version as GCC, so unless you've screwed up your system by installing unmatched versions of g++
and libstdc++.so
you can get that from:
$ g++ -dumpversion
4.6.3
Or, on most distros, you can just ask the package manager. On my Fedora host that's
$ rpm -q libstdc++
libstdc++-4.6.3-2.fc16.x86_64
libstdc++-4.6.3-2.fc16.i686
As other answers have said, you can map releases to library versions by checking the ABI docs
I'm not quite sure what a "good way" of copying a file is, but assuming "good" means "fast", I could broaden the subject a little.
Current operating systems have long been optimized to deal with run of the mill file copy. No clever bit of code will beat that. It is possible that some variant of your copy techniques will prove faster in some test scenario, but they most likely would fare worse in other cases.
Typically, the sendfile
function probably returns before the write has been committed, thus giving the impression of being faster than the rest. I haven't read the code, but it is most certainly because it allocates its own dedicated buffer, trading memory for time. And the reason why it won't work for files bigger than 2Gb.
As long as you're dealing with a small number of files, everything occurs inside various buffers (the C++ runtime's first if you use iostream
, the OS internal ones, apparently a file-sized extra buffer in the case of sendfile
). Actual storage media is only accessed once enough data has been moved around to be worth the trouble of spinning a hard disk.
I suppose you could slightly improve performances in specific cases. Off the top of my head:
copy_file
sequentially (though you'll hardly notice the difference as long as the file fits in the OS cache)But all that is outside the scope of a general purpose file copy function.
So in my arguably seasoned programmer's opinion, a C++ file copy should just use the C++17 file_copy
dedicated function, unless more is known about the context where the file copy occurs and some clever strategies can be devised to outsmart the OS.
You can utilize the dependency management mechanism.
If you create entries in the <dependencyManagement> section of your pom for spring-security-web and spring-web with the desired 3.1.0 version set the managed version of the artifact will override those specified in the transitive dependency tree.
I'm not sure if that really saves you any code, but it is a cleaner solution IMO.
You'll have to have a ContextLoaderListener in your web.xml - It loads your configuration files.
<listener>
<listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
</listener>
You need to understand the difference between Web application context and root application context .
In the web MVC framework, each DispatcherServlet has its own WebApplicationContext, which inherits all the beans already defined in the root WebApplicationContext. These inherited beans defined can be overridden in the servlet-specific scope, and new scope-specific beans can be defined local to a given servlet instance.
The dispatcher servlet's application context is a web application context which is only applicable for the Web classes . You cannot use these for your middle tier layers . These need a global app context using ContextLoaderListener .
Read the spring reference here for spring mvc .
This might be because of the transitive dependencies.
Try to add/ remove the scope from the JSTL library.
This worked for me!
In order to prevent StaleObjectStateException
, in your hbm
file write below code:
<timestamp name="lstUpdTstamp" column="LST_UPD_TSTAMP" source="db"/>
In Groovy, you can use trait instead of class. As they act similar to abstract classes (in the way that you can specify abstract methods, but you can still implement others), you can do something like:
trait EmployeeTrait {
int getId() {
return 1000 //Default value
}
abstract String getName() //Required
}
trait CustomerTrait {
String getCompany() {
return "Internal" // Default value
}
abstract String getAddress()
}
class InternalCustomer implements EmployeeTrait, CustomerTrait {
String getName() { ... }
String getAddress() { ... }
}
def internalCustomer = new InternalCustomer()
println internalCustomer.id // 1000
println internalCustomer.company //Internal
Just to point out, its not exactly the same as extending two classes, but in some cases (like the above example), it can solve the situation. I strongly suggest to analyze your design before jumping into using traits, usually they are not required and you won't be able to nicely implement inheritance (for example, you can't use protected methods in traits). Follow the accepted answer's recommendation if possible.
Try this cmd in terminal
$ ulimit -c unlimited
The hint is, the output file is created even if you get this error. The automatic deconstruction of vector starts after your code executed. Elements in the vector are deconstructed as well. This is most probably where the error occurs. The way you access the vector is through vector::operator[]
with an index read from stream. Try vector::at()
instead of vector::operator[]
. This won't solve your problem, but will show which assignment to the vector causes error.
If nothing else works which was the case for me, in the problems view, right click and copy the errors and paste it in a text editor. And scroll down to see if there are other errors besides just the missing artifact.
Eclipse problems view only shows about 100 errors and the errors that are not visible might be the ones that's causing all the other missing artifact errors.
Once I saw all the errors, I was able to figure out what the issue was and fixed it.
I added jstl jar in a library and added it to build path and deployment assembly but it dint worked. then i simply copied my jstl jar into lib folder inside webcontent, it worked. in eclipse lib folder in included to deployment assembly by default
Make sure you register Spring's CharacterEncodingFilter
in your web.xml
(must be the first filter in that file).
<filter>
<filter-name>encodingFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
<init-param>
<param-name>forceEncoding</param-name>
<param-value>true</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>encodingFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
If you are on Tomcat you might not have set the URIEncoding
in your server.xml
. If you don't set it to UTF-8 it won't work. Definitely keep the CharacterEncodingFilter
. Nevertheless, here's a concise checklist to follow. It will definitely guide you to make this work.
#include <stdio.h>
#define MAXNUMBER 1024
int main()
{
int i;
char a[MAXNUMBER];
FILE *fp = popen("du -b /bin/bash", "r");
while((a[i++] = getc(fp))!= 9)
;
a[i] ='\0';
printf(" a is %s\n", a);
pclose(fp);
return 0;
}
HTH
I had the same problem because I changed the user from myself to someone else:
su
For some reason, after did the normal compiling I was not able to execute it (the same error message). Directly ssh to the other user account works.
org.apache.jasper.JasperException: The absolute uri: http://java.sun.com/jstl/core cannot be resolved in either web.xml or the jar files deployed with this application
That URI is for JSTL 1.0, but you're actually using JSTL 1.2 which uses URIs with an additional /jsp
path (because JSTL, who invented EL expressions, was since version 1.1 integrated as part of JSP in order to share/reuse the EL logic in plain JSP too).
So, fix the taglib URI accordingly based on JSTL documentation:
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
Further you need to make absolutely sure that you do not throw multiple different versioned JSTL JAR files together into the runtime classpath. This is a pretty common mistake among Tomcat users. The problem with Tomcat is that it does not offer JSTL out the box and thus you have to manually install it. This is not necessary in normal Jakarta EE servers. See also What exactly is Java EE?
In your specific case, your pom.xml basically tells you that you have jstl-1.2.jar and standard-1.1.2.jar together. This is wrong. You're basically mixing JSTL 1.2 API+impl from Oracle with JSTL 1.1 impl from Apache. You should stick to only one JSTL implementation.
In case you're already on Tomcat 10 or newer (the first Jakartified version, with jakarta.*
package instead of javax.*
package), use JSTL 2.0 via this sole dependency:
<dependency>
<groupId>org.glassfish.web</groupId>
<artifactId>jakarta.servlet.jsp.jstl</artifactId>
<version>2.0.0</version>
</dependency>
Non-Maven users can achieve the same by dropping the following two physical files in /WEB-INF/lib
folder of the web application project (do absolutely not drop standard*.jar or any loose .tld files in there! remove them if necessary).
In case you're not on Tomcat 10 yet, but still on Tomcat 9 or older, use JSTL 1.2 via this sole dependency:
<dependency>
<groupId>org.glassfish.web</groupId>
<artifactId>jakarta.servlet.jsp.jstl</artifactId>
<version>1.2.6</version>
</dependency>
Non-Maven users can achieve the same by dropping the following two physical files in /WEB-INF/lib
folder of the web application project (do absolutely not drop standard*.jar or any loose .tld files in there! remove them if necessary).
In case you're actually using a normal Jakarta EE server such as WildFly, Payara, etc instead of a barebones servletcontainer such as Tomcat, Jetty, etc, then you don't need to explicitly install JSTL at all. Normal Jakarta EE servers already provide JSTL out the box. In other words, you don't need to add JSTL to pom.xml
nor to drop any JAR/TLD files in webapp. Solely the provided
scoped Jakarta EE coordinate is sufficient:
<dependency>
<groupId>jakarta.platform</groupId>
<artifactId>jakarta.jakartaee-api</artifactId>
<version><!-- 9.0.0, 8.0.0, etc depending on your server --></version>
<scope>provided</scope>
</dependency>
Further you should also make sure that your web.xml
is declared conform at least Servlet 2.4 and thus not as Servlet 2.3 or older. Otherwise EL expressions inside JSTL tags would in turn fail to work. Pick the highest version matching your target container and make sure that you don't have a <!DOCTYPE>
anywhere in your web.xml
. Here's a Servlet 5.0 (Tomcat 10) compatible example:
<?xml version="1.0" encoding="UTF-8"?>
<web-app
xmlns="https://jakarta.ee/xml/ns/jakartaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="https://jakarta.ee/xml/ns/jakartaee https://jakarta.ee/xml/ns/jakartaee/web-app_5_0.xsd"
version="5.0">
<!-- Config here. -->
</web-app>
And here's a Servlet 4.0 (Tomcat 9) compatible example:
<?xml version="1.0" encoding="UTF-8"?>
<web-app
xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
version="4.0">
<!-- Config here. -->
</web-app>
I encountered such a situation where code was circumventing STL's api and writing to the array unsafely when someone resizes it. Adding the assert here caught it:
void Logo::add(const QVector3D &v, const QVector3D &n)
{
GLfloat *p = m_data.data() + m_count;
*p++ = v.x();
*p++ = v.y();
*p++ = v.z();
*p++ = n.x();
*p++ = n.y();
*p++ = n.z();
m_count += 6;
Q_ASSERT( m_count <= m_data.size() );
}
.classpath
file of your project : vim .classpath
.vim
, use :MvnRepo
to initialize the Maven Eclim plugin. This will set M2_REPO
. Note that this step *has to be performed while editing the .classpath
file (hence step 1).:Mvn dependency:resolve
..classpath
with :Mvn eclipse:eclipse
..classpath
— :wq
.eclim
seems to help.Note that steps 3 and 4 can be done outside vim
, with mvn dependency:resolve
and mvn eclipse:eclipse
, respectively.
Since the plugin is mentioned as an Eclipse plugin in Eclim’s documentation, I assume this procedure may also work for Eclipse users.
Core dependencies for tag library:
> <dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-taglibs</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-rest</artifactId>
</dependency>
The default generator for Windows seems to be set to NMAKE. Try to use:
cmake -G "MinGW Makefiles"
Or use the GUI, and select MinGW Makefiles when prompted for a generator. Don't forget to cleanup the directory where you tried to run CMake, or delete the cache in the GUI. Otherwise, it will try again with NMAKE.
Three basic rules:
NULL
after freeNULL
before freeing.NULL
in the start.Combination of these three works quite well.
Since it seems impossible to do just with symbol versioning hacks, let's go one step further and compile glibc ourselves.
This setup might work and is quick as it does not recompile the whole GCC toolchain, just glibc.
But it is not reliable as it uses host C runtime objects such as crt1.o
, crti.o
, and crtn.o
provided by glibc. This is mentioned at: https://sourceware.org/glibc/wiki/Testing/Builds?action=recall&rev=21#Compile_against_glibc_in_an_installed_location Those objects do early setup that glibc relies on, so I wouldn't be surprised if things crashed in wonderful and awesomely subtle ways.
For a more reliable setup, see Setup 2 below.
Build glibc and install locally:
export glibc_install="$(pwd)/glibc/build/install"
git clone git://sourceware.org/git/glibc.git
cd glibc
git checkout glibc-2.28
mkdir build
cd build
../configure --prefix "$glibc_install"
make -j `nproc`
make install -j `nproc`
test_glibc.c
#define _GNU_SOURCE
#include <assert.h>
#include <gnu/libc-version.h>
#include <stdatomic.h>
#include <stdio.h>
#include <threads.h>
atomic_int acnt;
int cnt;
int f(void* thr_data) {
for(int n = 0; n < 1000; ++n) {
++cnt;
++acnt;
}
return 0;
}
int main(int argc, char **argv) {
/* Basic library version check. */
printf("gnu_get_libc_version() = %s\n", gnu_get_libc_version());
/* Exercise thrd_create from -pthread,
* which is not present in glibc 2.27 in Ubuntu 18.04.
* https://stackoverflow.com/questions/56810/how-do-i-start-threads-in-plain-c/52453291#52453291 */
thrd_t thr[10];
for(int n = 0; n < 10; ++n)
thrd_create(&thr[n], f, NULL);
for(int n = 0; n < 10; ++n)
thrd_join(thr[n], NULL);
printf("The atomic counter is %u\n", acnt);
printf("The non-atomic counter is %u\n", cnt);
}
Compile and run with test_glibc.sh
:
#!/usr/bin/env bash
set -eux
gcc \
-L "${glibc_install}/lib" \
-I "${glibc_install}/include" \
-Wl,--rpath="${glibc_install}/lib" \
-Wl,--dynamic-linker="${glibc_install}/lib/ld-linux-x86-64.so.2" \
-std=c11 \
-o test_glibc.out \
-v \
test_glibc.c \
-pthread \
;
ldd ./test_glibc.out
./test_glibc.out
The program outputs the expected:
gnu_get_libc_version() = 2.28
The atomic counter is 10000
The non-atomic counter is 8674
Command adapted from https://sourceware.org/glibc/wiki/Testing/Builds?action=recall&rev=21#Compile_against_glibc_in_an_installed_location but --sysroot
made it fail with:
cannot find /home/ciro/glibc/build/install/lib/libc.so.6 inside /home/ciro/glibc/build/install
so I removed it.
ldd
output confirms that the ldd
and libraries that we've just built are actually being used as expected:
+ ldd test_glibc.out
linux-vdso.so.1 (0x00007ffe4bfd3000)
libpthread.so.0 => /home/ciro/glibc/build/install/lib/libpthread.so.0 (0x00007fc12ed92000)
libc.so.6 => /home/ciro/glibc/build/install/lib/libc.so.6 (0x00007fc12e9dc000)
/home/ciro/glibc/build/install/lib/ld-linux-x86-64.so.2 => /lib64/ld-linux-x86-64.so.2 (0x00007fc12f1b3000)
The gcc
compilation debug output shows that my host runtime objects were used, which is bad as mentioned previously, but I don't know how to work around it, e.g. it contains:
COLLECT_GCC_OPTIONS=/usr/lib/gcc/x86_64-linux-gnu/7/../../../x86_64-linux-gnu/crt1.o
Now let's modify glibc with:
diff --git a/nptl/thrd_create.c b/nptl/thrd_create.c
index 113ba0d93e..b00f088abb 100644
--- a/nptl/thrd_create.c
+++ b/nptl/thrd_create.c
@@ -16,11 +16,14 @@
License along with the GNU C Library; if not, see
<http://www.gnu.org/licenses/>. */
+#include <stdio.h>
+
#include "thrd_priv.h"
int
thrd_create (thrd_t *thr, thrd_start_t func, void *arg)
{
+ puts("hacked");
_Static_assert (sizeof (thr) == sizeof (pthread_t),
"sizeof (thr) != sizeof (pthread_t)");
Then recompile and re-install glibc, and recompile and re-run our program:
cd glibc/build
make -j `nproc`
make -j `nproc` install
./test_glibc.sh
and we see hacked
printed a few times as expected.
This further confirms that we actually used the glibc that we compiled and not the host one.
Tested on Ubuntu 18.04.
This is an alternative to setup 1, and it is the most correct setup I've achieved far: everything is correct as far as I can observe, including the C runtime objects such as crt1.o
, crti.o
, and crtn.o
.
In this setup, we will compile a full dedicated GCC toolchain that uses the glibc that we want.
The only downside to this method is that the build will take longer. But I wouldn't risk a production setup with anything less.
crosstool-NG is a set of scripts that downloads and compiles everything from source for us, including GCC, glibc and binutils.
Yes the GCC build system is so bad that we need a separate project for that.
This setup is only not perfect because crosstool-NG does not support building the executables without extra -Wl
flags, which feels weird since we've built GCC itself. But everything seems to work, so this is only an inconvenience.
Get crosstool-NG and configure it:
git clone https://github.com/crosstool-ng/crosstool-ng
cd crosstool-ng
git checkout a6580b8e8b55345a5a342b5bd96e42c83e640ac5
export CT_PREFIX="$(pwd)/.build/install"
export PATH="/usr/lib/ccache:${PATH}"
./bootstrap
./configure --enable-local
make -j `nproc`
./ct-ng x86_64-unknown-linux-gnu
./ct-ng menuconfig
The only mandatory option that I can see, is making it match your host kernel version to use the correct kernel headers. Find your host kernel version with:
uname -a
which shows me:
4.15.0-34-generic
so in menuconfig
I do:
Operating System
Version of linux
so I select:
4.14.71
which is the first equal or older version. It has to be older since the kernel is backwards compatible.
Now you can build with:
env -u LD_LIBRARY_PATH time ./ct-ng build CT_JOBS=`nproc`
and now wait for about thirty minutes to two hours for compilation.
The .config
that we generated with ./ct-ng x86_64-unknown-linux-gnu
has:
CT_GLIBC_V_2_27=y
To change that, in menuconfig
do:
C-library
Version of glibc
save the .config
, and continue with the build.
Or, if you want to use your own glibc source, e.g. to use glibc from the latest git, proceed like this:
Paths and misc options
Try features marked as EXPERIMENTAL
: set to trueC-library
Source of glibc
Custom location
: say yesCustom location
Custom source location
: point to a directory containing your glibc sourcewhere glibc was cloned as:
git clone git://sourceware.org/git/glibc.git
cd glibc
git checkout glibc-2.28
Once you have built he toolchain that you want, test it out with:
#!/usr/bin/env bash
set -eux
install_dir="${CT_PREFIX}/x86_64-unknown-linux-gnu"
PATH="${PATH}:${install_dir}/bin" \
x86_64-unknown-linux-gnu-gcc \
-Wl,--dynamic-linker="${install_dir}/x86_64-unknown-linux-gnu/sysroot/lib/ld-linux-x86-64.so.2" \
-Wl,--rpath="${install_dir}/x86_64-unknown-linux-gnu/sysroot/lib" \
-v \
-o test_glibc.out \
test_glibc.c \
-pthread \
;
ldd test_glibc.out
./test_glibc.out
Everything seems to work as in Setup 1, except that now the correct runtime objects were used:
COLLECT_GCC_OPTIONS=/home/ciro/crosstool-ng/.build/install/x86_64-unknown-linux-gnu/bin/../x86_64-unknown-linux-gnu/sysroot/usr/lib/../lib64/crt1.o
It does not seem possible with crosstool-NG, as explained below.
If you just re-build;
env -u LD_LIBRARY_PATH time ./ct-ng build CT_JOBS=`nproc`
then your changes to the custom glibc source location are taken into account, but it builds everything from scratch, making it unusable for iterative development.
If we do:
./ct-ng list-steps
it gives a nice overview of the build steps:
Available build steps, in order:
- companion_tools_for_build
- companion_libs_for_build
- binutils_for_build
- companion_tools_for_host
- companion_libs_for_host
- binutils_for_host
- cc_core_pass_1
- kernel_headers
- libc_start_files
- cc_core_pass_2
- libc
- cc_for_build
- cc_for_host
- libc_post_cc
- companion_libs_for_target
- binutils_for_target
- debug
- test_suite
- finish
Use "<step>" as action to execute only that step.
Use "+<step>" as action to execute up to that step.
Use "<step>+" as action to execute from that step onward.
therefore, we see that there are glibc steps intertwined with several GCC steps, most notably libc_start_files
comes before cc_core_pass_2
, which is likely the most expensive step together with cc_core_pass_1
.
In order to build just one step, you must first set the "Save intermediate steps" in .config
option for the intial build:
Paths and misc options
Debug crosstool-NG
Save intermediate steps
and then you can try:
env -u LD_LIBRARY_PATH time ./ct-ng libc+ -j`nproc`
but unfortunately, the +
required as mentioned at: https://github.com/crosstool-ng/crosstool-ng/issues/1033#issuecomment-424877536
Note however that restarting at an intermediate step resets the installation directory to the state it had during that step. I.e., you will have a rebuilt libc - but no final compiler built with this libc (and hence, no compiler libraries like libstdc++ either).
and basically still makes the rebuild too slow to be feasible for development, and I don't see how to overcome this without patching crosstool-NG.
Furthermore, starting from the libc
step didn't seem to copy over the source again from Custom source location
, further making this method unusable.
A bonus if you're also interested in the C++ standard library: How to edit and re-build the GCC libstdc++ C++ standard library source?
Old question, but hopefully this'll help someone else.
In my case I was using a toolchain on Ubuntu 12.04 that was built on Ubuntu 10.04 (requires GCC 4.1 to build). As most of the libraries have moved to multiarch dirs, it couldn't find ld.so. So, make a symlink for it.
Check required path:
$ readelf -a arm-linux-gnueabi-gcc | grep interpreter: [Requesting program interpreter: /lib/ld-linux-x86-64.so.2]
Create symlink:
$ sudo ln -s /lib/x86_64-linux-gnu/ld-linux-x86-64.so.2 /lib/ld-linux-x86-64.so.2
If you're on 32bit, it'll be i386-linux-gnu and not x86_64-linux-gnu.
Update your pom.xml
<dependency>
<groupId>asm</groupId>
<artifactId>asm</artifactId>
<version>3.1</version>
</dependency>
Use XStream toXML/fromXML in memory. Extremely fast and has been around for a long time and is going strong. Objects don't need to be Serializable and you don't have use reflection (although XStream does). XStream can discern variables that point to the same object and not accidentally make two full copies of the instance. A lot of details like that have been hammered out over the years. I've used it for a number of years and it is a go to. It's about as easy to use as you can imagine.
new XStream().toXML(myObj)
or
new XStream().fromXML(myXML)
To clone,
new XStream().fromXML(new XStream().toXML(myObj))
More succinctly:
XStream x = new XStream();
Object myClone = x.fromXML(x.toXML(myObj));
A good way to findout what header file you are missing:
man <section> <function call>
To find out the section use:
apropos <function call>
Example:
man 3 memset
man 2 send
Edit in response to James Morris:
Source: Wikipedia Man Page
In case someone else runs into this problem, I just did using Eclipse; running the project via the right click action. This error occurred in the J2EE view, but did NOT occur in the Java view. Not sure - assuming something with adding libraries to the correct 'lib' directory.
I am also using a Maven project, allowing m2eclipse to manage dependancies.
It might be worth noting that this can also occur when Windows blocks downloads that it considers to be unsafe. This can be addressed by right-clicking the jar file (such as ojdbc7.jar), and checking the 'Unblock' box at the bottom.
Windows JAR File Properties Dialog:
Sssuming you have a parent Post
entity and a child PostComment
as illustrated in the following diagram:
If you call find
when you try to set the @ManyToOne
post
association:
PostComment comment = new PostComment();
comment.setReview("Just awesome!");
Post post = entityManager.find(Post.class, 1L);
comment.setPost(post);
entityManager.persist(comment);
Hibernate will execute the following statements:
SELECT p.id AS id1_0_0_,
p.title AS title2_0_0_
FROM post p
WHERE p.id = 1
INSERT INTO post_comment (post_id, review, id)
VALUES (1, 'Just awesome!', 1)
The SELECT query is useless this time because we don’t need the Post entity to be fetched. We only want to set the underlying post_id Foreign Key column.
Now, if you use getReference
instead:
PostComment comment = new PostComment();
comment.setReview("Just awesome!");
Post post = entityManager.getReference(Post.class, 1L);
comment.setPost(post);
entityManager.persist(comment);
This time, Hibernate will issue just the INSERT statement:
INSERT INTO post_comment (post_id, review, id)
VALUES (1, 'Just awesome!', 1)
Unlike find
, the getReference
only returns an entity Proxy which only has the identifier set. If you access the Proxy, the associated SQL statement will be triggered as long as the EntityManager is still open.
However, in this case, we don’t need to access the entity Proxy. We only want to propagate the Foreign Key to the underlying table record so loading a Proxy is sufficient for this use case.
When loading a Proxy, you need to be aware that a LazyInitializationException
can be thrown if you try to access the Proxy reference after the EntityManager is closed.
A lot depends on what kind of project it is. WTP's JSP support either expects the JSP files to be under the same folder that's the parent of the WEB-INF folder (src/web, which it will then treat as "/" to find TLDs), or to have project metadata set up to help it know where that root is (done for you in a Dynamic Web Project through Deployment Assembly). How are you referring to the TLD file, and where is the JSP file located?
And maybe I missed the original post to the Eclipse forums; the one I saw was posted a full day after this one.
This answer I've got following tips here, so it is not really mine. It works for me using LATIN1 or UTF-8. If you use other charsets, you probably should add them to mb_detect_encoding
function. Correct environment set is probably needed also.
function NoAccents($s){
return iconv(mb_detect_encoding($s,'UTF-8, ASCII, ISO-8859-1'),'ASCII//TRANSLIT//INGORE',$s);
}
Using begin and end seemed to work for me to select a range of elements. This gives me three separate lists. The first list with items 1-9, second list with items 10-18, and the last list with items 11-25.
<ul>
<c:forEach items="${actionBean.top25Teams}" begin="0" end="8" var="team" varStatus="counter">
<li>${team.name}</li>
</c:forEach>
</ul>
<ul>
<c:forEach items="${actionBean.top25Teams}" begin="9" end="17" var="team" varStatus="counter">
<li>${team.name}</li>
</c:forEach>
</ul>
<ul>
<c:forEach items="${actionBean.top25Teams}" begin="18" end="25" var="team" varStatus="counter">
<li>${team.name}</li>
</c:forEach>
</ul>
Can you consider using Nix http://nixos.org/nix/ ?
Nix supports multi-user package management: multiple users can share a common Nix store securely, don’t need to have root privileges to install software, and can install and use different versions of a package.
it's easy to export mylib.so
to env:
$ export LD_PRELOAD=/path/mylib.so
$ ./mybin
to disable :
$ export LD_PRELOAD=
Don't use wsgiref for production. Use Apache and mod_wsgi, or something else.
We continue to see these connection resets, sometimes frequently, with wsgiref (the backend used by the werkzeug test server, and possibly others like the Django test server). Our solution was to log the error, retry the call in a loop, and give up after ten failures. httplib2 tries twice, but we needed a few more. They seem to come in bunches as well - adding a 1 second sleep might clear the issue.
We've never seen a connection reset when running through Apache and mod_wsgi. I don't know what they do differently, (maybe they just mask them), but they don't appear.
When we asked the local dev community for help, someone confirmed that they see a lot of connection resets with wsgiref that go away on the production server. There's a bug there, but it is going to be hard to find it.
I've had issue with IE7 and returning false before.
Check my answer here to another problem: Javascript not running on IE
Yeah, I'm using tf 2.0-beta and want to enable/disable the default logging. The environment variable and methods in tf1.X don't seem to exist anymore.
I stepped around in PDB and found this to work:
# close the TF2 logger
tf2logger = tf.get_logger()
tf2logger.error('Close TF2 logger handlers')
tf2logger.root.removeHandler(tf2logger.root.handlers[0])
I then add my own logger API (in this case file-based)
logtf = logging.getLogger('DST')
logtf.setLevel(logging.DEBUG)
# file handler
logfile='/tmp/tf_s.log'
fh = logging.FileHandler(logfile)
fh.setFormatter( logging.Formatter('fh %(asctime)s %(name)s %(filename)s:%(lineno)d :%(message)s') )
logtf.addHandler(fh)
logtf.info('writing to %s', logfile)
This stuff comes from ES file explorer
Just go into this app > settings
Then there is an option that says logging floating window, you just need to disable that and you will get rid of this infernal bubble for good
Sorry for awakening an old question like this. But I think what the original author wanted as an answer was:
You need to force your program to make the graphic update after you make the change to the textbox1. You can do that by invoking Update();
textBox1.Text += "\r\nThread Sleeps!";
textBox1.Update();
System.Threading.Thread.Sleep(4000);
textBox1.Text += "\r\nThread awakens!";
textBox1.Update();
Normally this will be done automatically when the thread is done.
Ex, you press a button, changes are made to the text, thread dies, and then .Update()
is fired and you see the changes.
(I'm not an expert so I cant really tell you when its fired, but its something similar to this any way.)
In this case, you make a change, pause the thread, and then change the text again, and when the thread finally dies the .Update()
is fired. This resulting in you only seeing the last change made to the text.
You would experience the same issue if you had a long execution between the text changes.
There's a oneliner for this one.
You can simply run,
docker run -v /1.0-SNAPSHOT/my-app-1.0-SNAPSHOT.war:/usr/local/tomcat/webapps/myapp.war -it -p 8080:8080 tomcat
This will copy the war file to webapps directory and get your app running in no time.
add this line at the top of string.xml
<?xml version="1.0" encoding="utf-8"?>
and use
'\n'
from where you want to break your line.
ex. <string> Hello world. \n its awesome. <string>
Output:
Hello world.
its awesome.
I think you can find it usefull
http://docs.spring.io/spring-boot/docs/current/reference/htmlsingle/#howto-two-datasources
It shows how to define multiple datasources & assign one of them as primary.
Here is a rather full example, also contains distributes transactions - if you need it.
What you need is to create 2 configuration classes, separate the model/repository packages etc to make the config easy.
Also, in above example, it creates the data sources manually. You can avoid this using the method on spring doc, with @ConfigurationProperties annotation. Here is an example of this:
http://xantorohara.blogspot.com.tr/2013/11/spring-boot-jdbc-with-multiple.html
Hope these helps.
Warning: Only one null row can be in the column you've set to be unique.
You can do this with a filtered index in SQL 2008:
CREATE UNIQUE NONCLUSTERED INDEX idx_col1
ON dbo.MyTable(col1)
WHERE col1 IS NOT NULL;
See Field value must be unique unless it is NULL for a range of answers.
SELECT * FROM a WHERE a.group_id IN
(SELECT group_id FROM b WHERE b.user_id!=$_SESSION{'[user_id']} AND b.group_id = a.group_id)
WHERE a.keyword LIKE '%".$keyword."%';
Your byte array is too small. Each pixel takes up 4 bytes, not just 1, so multiply your size * 4 so that the array is big enough.
The code from Alex works great. Just note that when you use request.getParameter you must use a request dispatcher
//Pass results back to the client
RequestDispatcher dispatcher = getServletContext().getRequestDispatcher("TestPages/ServiceServlet.jsp");
dispatcher.forward(request, response);
1)Open the command prompt or terminal based on your OS.
2)Then type java --version
in the terminal.
3) If java is installed successfullly it will show the respective version .
A number of parameters affect generation size. The following diagram illustrates the difference between committed space and virtual space in the heap. At initialization of the virtual machine, the entire space for the heap is reserved. The size of the space reserved can be specified with the -Xmx
option. If the value of the -Xms
parameter is smaller than the value of the -Xmx
parameter, not all of the space that is reserved is immediately committed to the virtual machine. The uncommitted space is labeled "virtual" in this figure. The different parts of the heap (permanent generation, tenured generation and young generation) can grow to the limit of the virtual space as needed.
By default, the virtual machine grows or shrinks the heap at each collection to try to keep the proportion of free space to live objects at each collection within a specific range. This target range is set as a percentage by the parameters -XX:MinHeapFreeRatio=<minimum>
and -XX:MaxHeapFreeRatio=<maximum>
, and the total size is bounded below by -Xms<min>
and above by -Xmx<max>
.
Parameter Default Value
MinHeapFreeRatio 40
MaxHeapFreeRatio 70
-Xms 3670k
-Xmx 64m
Default values of heap size parameters on 64-bit systems have been scaled up by approximately 30%. This increase is meant to compensate for the larger size of objects on a 64-bit system.
With these parameters, if the percent of free space in a generation falls below 40%, the generation will be expanded to maintain 40% free space, up to the maximum allowed size of the generation. Similarly, if the free space exceeds 70%, the generation will be contracted so that only 70% of the space is free, subject to the minimum size of the generation.
Large server applications often experience two problems with these defaults. One is slow startup, because the initial heap is small and must be resized over many major collections. A more pressing problem is that the default maximum heap size is unreasonably small for most server applications. The rules of thumb for server applications are:
In general, increase the memory as you increase the number of processors, since allocation can be parallelized.
There is the full article
The parent function needs the virtual
keyword, and the child function needs the override
keyword in front of the function definition.
This
public static bool GetBit(this byte b, int bitNumber) {
return (b & (1 << bitNumber)) != 0;
}
should do it, I think.
You can simply write like this
import java.net.InetAddress;
import java.net.UnknownHostException;
public class Main {
private static final String HOST = "localhost";
public static void main(String[] args) throws UnknownHostException {
boolean isConnected = !HOST.equals(InetAddress.getLocalHost().getHostAddress().toString());
if (isConnected) System.out.println("Connected");
else System.out.println("Not connected");
}
}
It's still an attribute. Setting it to:
<input type="button" name=myButton value="disable" disabled="disabled">
... is valid.
loop { begin Bar.new rescue SystemExit p $! #: #<SystemExit: exit> end }
This will print #<SystemExit: exit>
in an infinite loop, without ever exiting.
Here's what it looks like using docker-compose
when building a custom Dockerfile
.
docker build -t imagename:version .
This will store your new version locally.docker-compose down
docker-compose.yml
file to reflect the new image name you set at step 1.docker-compose up -d
. It will look locally for the image and use your upgraded one.-EDIT-
My steps above are more verbose than they need to be. I've optimized my workflow by including the build: .
parameter to my docker-compose file. The steps looks this now:
docker-compose build
docker-compose up -d
I didn't realize at the time, but docker-compose is smart enough to simply update my container to the new image with the one command, instead of having to bring it down first.
Another alternative is to use capturing sub-expressions with the regular expression functions regmatches
and regexec
.
# the original example
x <- 'hello stackoverflow'
# grab the substrings
myStrings <- regmatches(x, regexec('(^.)(.*)', x))
This returns the entire string, the first character, and the "popped" result in a list of length 1.
myStrings
[[1]]
[1] "hello stackoverflow" "h" "ello stackoverflow"
which is equivalent to list(c(x, substr(x, 1, 1), substr(x, 2, nchar(x))))
. That is, it contains the super set of the desired elements as well as the full string.
Adding sapply
will allow this method to work for a character vector of length > 1.
# a slightly more interesting example
xx <- c('hello stackoverflow', 'right back', 'at yah')
# grab the substrings
myStrings <- regmatches(x, regexec('(^.)(.*)', xx))
This returns a list with the matched full string as the first element and the matching subexpressions captured by ()
as the following elements. So in the regular expression '(^.)(.*)'
, (^.)
matches the first character and (.*)
matches the remaining characters.
myStrings
[[1]]
[1] "hello stackoverflow" "h" "ello stackoverflow"
[[2]]
[1] "right back" "r" "ight back"
[[3]]
[1] "at yah" "a" "t yah"
Now, we can use the trusty sapply
+ [
method to pull out the desired substrings.
myFirstStrings <- sapply(myStrings, "[", 2)
myFirstStrings
[1] "h" "r" "a"
mySecondStrings <- sapply(myStrings, "[", 3)
mySecondStrings
[1] "ello stackoverflow" "ight back" "t yah"
var currentYear = (new Date()).getFullYear();
var twoLastDigits = currentYear%100;
var formatedTwoLastDigits = "";
if (twoLastDigits <10 ) {
formatedTwoLastDigits = "0" + twoLastDigits;
} else {
formatedTwoLastDigits = "" + twoLastDigits;
}
The quickest/easiest options I have found are the following. 501 represents the row index.
df.at[501,'column_name']
df.get_value(501,'column_name')
You will also have to look in your system path. Python puts itself there and does not remove itself: http://www.computerhope.com/issues/ch000549.htm
Your problems probably started because your python path is pointing to the wrong one.
Snippet code when you receive file path.
Uri fileUri = data.getData();
FilePathHelper filePathHelper = new FilePathHelper();
String path = "";
if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.KITKAT) {
if (filePathHelper.getPathnew(fileUri, this) != null) {
path = filePathHelper.getPathnew(fileUri, this).toLowerCase();
} else {
path = filePathHelper.getFilePathFromURI(fileUri, this).toLowerCase();
}
} else {
path = filePathHelper.getPath(fileUri, this).toLowerCase();
}
Bellow is a class which can be accessed by creating new object. you will also need to add to a dependency in gradel implementation 'org.apache.directory.studio:org.apache.commons.io:2.4'
public class FilePathHelper {
public FilePathHelper(){
}
public String getMimeType(String url) {
String type = null;
String extension = MimeTypeMap.getFileExtensionFromUrl(url.replace(" ", ""));
if (extension != null) {
type = MimeTypeMap.getSingleton().getMimeTypeFromExtension(extension);
}
return type;
}
public String getFilePathFromURI(Uri contentUri, Context context) {
//copy file and send new file path
String fileName = getFileName(contentUri);
if (!TextUtils.isEmpty(fileName)) {
File copyFile = new File(context.getExternalCacheDir() + File.separator + fileName);
copy(context, contentUri, copyFile);
return copyFile.getAbsolutePath();
}
return null;
}
public void copy(Context context, Uri srcUri, File dstFile) {
try {
InputStream inputStream = context.getContentResolver().openInputStream(srcUri);
if (inputStream == null) return;
OutputStream outputStream = new FileOutputStream(dstFile);
IOUtils.copy(inputStream, outputStream);
inputStream.close();
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
public String getPath(Uri uri, Context context) {
String filePath = null;
final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
if (isKitKat) {
filePath = generateFromKitkat(uri, context);
}
if (filePath != null) {
return filePath;
}
Cursor cursor = context.getContentResolver().query(uri, new String[]{MediaStore.MediaColumns.DATA}, null, null, null);
if (cursor != null) {
if (cursor.moveToFirst()) {
int columnIndex = cursor.getColumnIndexOrThrow(MediaStore.MediaColumns.DATA);
filePath = cursor.getString(columnIndex);
}
cursor.close();
}
return filePath == null ? uri.getPath() : filePath;
}
@TargetApi(19)
private String generateFromKitkat(Uri uri, Context context) {
String filePath = null;
if (DocumentsContract.isDocumentUri(context, uri)) {
String wholeID = DocumentsContract.getDocumentId(uri);
String id = wholeID.split(":")[1];
String[] column = {MediaStore.Video.Media.DATA};
String sel = MediaStore.Video.Media._ID + "=?";
Cursor cursor = context.getContentResolver().
query(MediaStore.Video.Media.EXTERNAL_CONTENT_URI,
column, sel, new String[]{id}, null);
int columnIndex = cursor.getColumnIndex(column[0]);
if (cursor.moveToFirst()) {
filePath = cursor.getString(columnIndex);
}
cursor.close();
}
return filePath;
}
public String getFileName(Uri uri) {
if (uri == null) return null;
String fileName = null;
String path = uri.getPath();
int cut = path.lastIndexOf('/');
if (cut != -1) {
fileName = path.substring(cut + 1);
}
return fileName;
}
@RequiresApi(api = Build.VERSION_CODES.KITKAT)
public String getPathnew(Uri uri, Context context) {
final boolean isKitKat = Build.VERSION.SDK_INT >= Build.VERSION_CODES.KITKAT;
// DocumentProvider
if (isKitKat && DocumentsContract.isDocumentUri(context, uri)) {
// ExternalStorageProvider
if (isExternalStorageDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
if ("primary".equalsIgnoreCase(type)) {
return Environment.getExternalStorageDirectory() + "/" + split[1];
}
// TODO handle non-primary volumes
}
// DownloadsProvider
else if (isDownloadsDocument(uri)) {
final String id = DocumentsContract.getDocumentId(uri);
final Uri contentUri = ContentUris.withAppendedId(Uri.parse("content://downloads/public_downloads"), Long.valueOf(id));
return getDataColumn(context, contentUri, null, null);
}
// MediaProvider
else if (isMediaDocument(uri)) {
final String docId = DocumentsContract.getDocumentId(uri);
final String[] split = docId.split(":");
final String type = split[0];
Uri contentUri = null;
if ("image".equals(type)) {
contentUri = MediaStore.Images.Media.EXTERNAL_CONTENT_URI;
} else if ("video".equals(type)) {
contentUri = MediaStore.Video.Media.EXTERNAL_CONTENT_URI;
} else if ("audio".equals(type)) {
contentUri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
}
final String selection = "_id=?";
final String[] selectionArgs = new String[]{split[1]};
return getDataColumn(context, contentUri, selection, selectionArgs);
}
}
// MediaStore (and general)
else if ("content".equalsIgnoreCase(uri.getScheme())) {
// Return the remote address
if (isGooglePhotosUri(uri))
return uri.getLastPathSegment();
return getDataColumn(context, uri, null, null);
}
// File
else if ("file".equalsIgnoreCase(uri.getScheme())) {
return uri.getPath();
}
return null;
}
public String getDataColumn(Context context, Uri uri, String selection, String[] selectionArgs) {
Cursor cursor = null;
final String column = "_data";
final String[] projection = {column};
try {
cursor = context.getContentResolver().query(uri, projection, selection, selectionArgs, null);
if (cursor != null && cursor.moveToFirst()) {
final int index = cursor.getColumnIndexOrThrow(column);
return cursor.getString(index);
}
} catch (Exception e) {
e.printStackTrace();
System.out.println("Something with exception - " + e.toString());
} finally {
if (cursor != null)
cursor.close();
}
return null;
}
public boolean isExternalStorageDocument(Uri uri) {
return "com.android.externalstorage.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is DownloadsProvider.
*/
public boolean isDownloadsDocument(Uri uri) {
return "com.android.providers.downloads.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is MediaProvider.
*/
public boolean isMediaDocument(Uri uri) {
return "com.android.providers.media.documents".equals(uri.getAuthority());
}
/**
* @param uri The Uri to check.
* @return Whether the Uri authority is Google Photos.
*/
public boolean isGooglePhotosUri(Uri uri) {
return "com.google.android.apps.photos.content".equals(uri.getAuthority());
}
}
If you don't need a plot per say, and you're simply interested in adding color to represent the values in a table format, you can use the style.background_gradient()
method of the pandas data frame. This method colorizes the HTML table that is displayed when viewing pandas data frames in e.g. the JupyterLab Notebook and the result is similar to using "conditional formatting" in spreadsheet software:
import numpy as np
import pandas as pd
index= ['aaa', 'bbb', 'ccc', 'ddd', 'eee']
cols = ['A', 'B', 'C', 'D']
df = pd.DataFrame(abs(np.random.randn(5, 4)), index=index, columns=cols)
df.style.background_gradient(cmap='Blues')
For detailed usage, please see the more elaborate answer I provided on the same topic previously and the styling section of the pandas documentation.
When you run the Windows Command Prompt, and type in python
, it starts the Python interpreter.
Typing it again tries to interpret python
as a variable, which doesn't exist and thus won't work:
Microsoft Windows [Version 6.1.7601]
Copyright (c) 2009 Microsoft Corporation. All rights reserved.
C:\Users\USER>python
Python 2.7.5 (default, May 15 2013, 22:43:36) [MSC v.1500 32 bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> python
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'python' is not defined
>>> print("interpreter has started")
interpreter has started
>>> quit() # leave the interpreter, and go back to the command line
C:\Users\USER>
If you're not doing this from the command line, and instead running the Python interpreter (python.exe or IDLE's shell) directly, you are not in the Windows Command Line, and python
is interpreted as a variable, which you have not defined.
Try
private boolean hasKey(JSONObject jsonObject, String key) {
return jsonObject != null && jsonObject.has(key);
}
try {
JSONObject jsonObject = new JSONObject(yourJson);
if (hasKey(jsonObject, "labelData")) {
JSONObject labelDataJson = jsonObject.getJSONObject("LabelData");
if (hasKey(labelDataJson, "video")) {
String video = labelDataJson.getString("video");
}
}
} catch (JSONException e) {
}
Assume you stored that dictionary in a variable called values. To get id
in to a variable, do:
idValue = values['criteria'][0]['id']
If that json is in a file, do the following to load it:
import json
jsonFile = open('your_filename.json', 'r')
values = json.load(jsonFile)
jsonFile.close()
If that json is from a URL, do the following to load it:
import urllib, json
f = urllib.urlopen("http://domain/path/jsonPage")
values = json.load(f)
f.close()
To print ALL of the criteria, you could:
for criteria in values['criteria']:
for key, value in criteria.iteritems():
print key, 'is:', value
print ''
public function addGetParamToUrl($url, $params)
{
foreach ($params as $param) {
if (strpos($url, "?"))
{
$url .= "&" .http_build_query($param);
}
else
{
$url .= "?" .http_build_query($param);
}
}
return $url;
}
The following script creates nice thumbnails of all JPEG images preserving aspect ratios with 128x128 max resolution.
from PIL import Image
img = Image.open("D:\\Pictures\\John.jpg")
img.thumbnail((680,680))
img.save("D:\\Pictures\\John_resize.jpg")
select SUBSTRING_INDEX(supplier_reference,'=',-1) from ps_product;
Please use http://www.w3resource.com/mysql/string-functions/mysql-substring_index-function.php for further reference.
I would add that HTMLElement has a built-in .blur
method as well.
Here's a demo using both .focus
and .blur
which work in similar ways.
const input = document.querySelector("#myInput");
_x000D_
<input id="myInput" value="Some Input">_x000D_
_x000D_
<button type="button" onclick="input.focus()">Focus</button>_x000D_
<button type="button" onclick="input.blur()">Lose focus</button>
_x000D_
After you malloc
a node
make sure to set node->next = NULL
.
int addNodeBottom(int val, node *head)
{
node *current = head;
node *newNode = (node *) malloc(sizeof(node));
if (newNode == NULL) {
printf("malloc failed\n");
exit(-1);
}
newNode->value = val;
newNode->next = NULL;
while (current->next) {
current = current->next;
}
current->next = newNode;
return 0;
}
I should point out that with this version the head
is still used as a dummy, not used for storing a value. This lets you represent an empty list by having just a head
node.
You can do this if you use an <a>
tag instead of a button. I know it's not exactly what you asked for, but it might give you some other options if you cannot find a solution to this:
Borrowing from a demo from another answer here I produced this:
a {_x000D_
display: block;_x000D_
font-size: 18px;_x000D_
border: 2px solid gray;_x000D_
border-radius: 100px;_x000D_
width: 100px;_x000D_
height: 100px;_x000D_
text-align: center;_x000D_
line-height: 100px;_x000D_
}_x000D_
_x000D_
a:active {_x000D_
font-size: 18px;_x000D_
border: 2px solid green;_x000D_
border-radius: 100px;_x000D_
width: 100px;_x000D_
height: 100px;_x000D_
}_x000D_
_x000D_
a:target {_x000D_
font-size: 18px;_x000D_
border: 2px solid red;_x000D_
border-radius: 100px;_x000D_
width: 100px;_x000D_
height: 100px;_x000D_
}
_x000D_
<a id="btn" href="#btn">Demo</a>
_x000D_
Notice the use of :target
; this will be the style applied when the element is targeted via the hash. Which also means your HTML will need to be this: <a id="btn" href="#btn">Demo</a>
a link targeting itself. and the demo http://jsfiddle.net/rlemon/Awdq5/4/
Thanks to @BenjaminGruenbaum here is a better demo: http://jsfiddle.net/agzVt/
Also, as a footnote: this should really be done with JavaScript and applying / removing CSS classes from the element. It would be much less convoluted.
also you can use this way. it will change your big drawble fit to your canvas:
Resources res = getResources();
Bitmap bitmap = BitmapFactory.decodeResource(res, yourDrawable);
yourCanvas.drawBitmap(bitmap, 0, 0, yourPaint);
There should be no difference, but your tuple method is wrong, try:
a_list.append(tuple([3, 4]))
It's probably easiest to create your query object directly as:
Test.find({
$and: [
{ $or: [{a: 1}, {b: 1}] },
{ $or: [{c: 1}, {d: 1}] }
]
}, function (err, results) {
...
}
But you can also use the Query#and
helper that's available in recent 3.x Mongoose releases:
Test.find()
.and([
{ $or: [{a: 1}, {b: 1}] },
{ $or: [{c: 1}, {d: 1}] }
])
.exec(function (err, results) {
...
});
jPlayer is a free and open source HTML5 Audio and Video library that you may find useful. It has support for playlists built in: http://jplayer.org/
its done through service.bat file in apache tomcat7
visit this blog .. install tomcat7 on windows
For a fully responsive IFramed YouTube video, try this:
<div class="blogwidevideo">
<iframe width="854" height="480" style="margin: auto;" src="https://www.youtube-nocookie.com/embed/h5ag-3nnenc" frameborder="0" allow="accelerometer; autoplay; encrypted-media; gyroscope; picture-in-picture" allowfullscreen></iframe>
</div>
.blogwidevideo {
overflow:hidden;
padding-bottom:56.25%;
position:relative;
height:0;
}
.blogwidevideo iframe {
left:10%; //centers for the 80% width - not needed if width is 100%
top:0;
height:80%; //change to 100% if going full width
width:80%;
position:absolute;
}
Try to do all the steps specified in the link below and before that upgrade VirtualBox to 4.2 by following the instructions in VirtualBox 4.2.0 Released With Support For Drag'n'drop From Host To Linux Guests, More. Then upgrade Genymotion to the latest version.
Go to the desktop and run Genymotion. Select a virtual device with Android version 4.2 and then drag and drop the two files Genymotion-ARM-Translation_v1.1.zip first. Then Genymotion will show progress and after this it will promt a dialog. Then click OK and it will ask to reboot the device. Restart ADB. Do the same steps for the second file, gapps-jb-20130812-signed.zip and restart ADB.
I hope this will resolve the issue. Check this link - it explains it clearer.
redis-cli -h XXX.XXX.XXX.XXX -p YYYY
xxx.xxx.xxx.xxx
is the IP address and yyyy
is the port
EXAMPLE from my dev environment
redis-cli -h 10.144.62.3 -p 30000
Host, port, password and database By default redis-cli connects to the server at 127.0.0.1 port 6379. As you can guess, you can easily change this using command line options. To specify a different host name or an IP address, use -h. In order to set a different port, use -p.
redis-cli -h redis15.localnet.org -p 6390 ping
This approach seems more straightforward, avoiding the need to individually select each file:
# keep remote files
git merge --strategy-option theirs
# keep local files
git merge --strategy-option ours
or
# keep remote files
git pull -Xtheirs
# keep local files
git pull -Xours
Copied directly from: Resolve Git merge conflicts in favor of their changes during a pull
From MSDN:
Date and time data from January 1, 1753, to December 31, 9999, with an accuracy of one three-hundredth second, or 3.33 milliseconds. Values are rounded to increments of .000, .003, or .007 milliseconds. Stored as two 4-byte integers. The first 4 bytes store the number of days before or after the base date, January 1, 1900. The base date is the system's reference date. Values for datetime earlier than January 1, 1753, are not permitted. The other 4 bytes store the time of day represented as the number of milliseconds after midnight. Seconds have a valid range of 0–59.
SQL uses a different system than C# for DateTime values.
You can use your MinValue as a sentinel value - and if it is MinValue - pass null into your object (and store the date as nullable in the DB).
if(date == dateTime.Minvalue)
objinfo.BirthDate = null;
The .NET component Excel Reader .NET may satisfy your requirement. It's good enought for reading XLSX and XLS files. So try it from:
The main reason is that deflate is faster to encode than gzip and on a busy server that might make a difference. With static pages it's a different question, since they can easily be pre-compressed once.
You can save effort with the new AsyncEnumerator NuGet Package, which didn't exist 4 years ago when the question was originally posted. It allows you to control the degree of parallelism:
using System.Collections.Async;
...
await ids.ParallelForEachAsync(async i =>
{
ICustomerRepo repo = new CustomerRepo();
var cust = await repo.GetCustomer(i);
customers.Add(cust);
},
maxDegreeOfParallelism: 10);
Disclaimer: I'm the author of the AsyncEnumerator library, which is open source and licensed under MIT, and I'm posting this message just to help the community.
A primary key is not required. A foreign key is not required either. You can construct a query joining two tables on any column you wish as long as the datatypes either match or are converted to match. No relationship needs to explicitly exist.
To do this you use an outer join:
select tablea.code, tablea.name, tableb.location from tablea left outer join
tableb on tablea.code = tableb.code
Here is a sample to find if there are match elements in another list
List<int> nums1 = new List<int> { 2, 4, 6, 8, 10 };
List<int> nums2 = new List<int> { 1, 3, 6, 9, 12};
if (nums1.Any(x => nums2.Any(y => y == x)))
{
Console.WriteLine("There are equal elements");
}
else
{
Console.WriteLine("No Match Found!");
}
<!-- Drop Shadow Stack -->
<item>
<shape android:shape="oval">
<padding
android:bottom="1dp"
android:left="1dp"
android:right="1dp"
android:top="1dp" />
<solid android:color="#00CCCCCC" />
<corners android:radius="3dp" />
</shape>
</item>
<item>
<shape android:shape="oval">
<padding
android:bottom="1dp"
android:left="1dp"
android:right="1dp"
android:top="1dp" />
<solid android:color="#10CCCCCC" />
<corners android:radius="3dp" />
</shape>
</item>
<item>
<shape android:shape="oval">
<padding
android:bottom="1dp"
android:left="1dp"
android:right="1dp"
android:top="1dp" />
<solid android:color="#20CCCCCC" />
<corners android:radius="3dp" />
</shape>
</item>
<item>
<shape android:shape="oval">
<padding
android:bottom="1dp"
android:left="1dp"
android:right="1dp"
android:top="1dp" />
<solid android:color="#30CCCCCC" />
<corners android:radius="3dp" />
</shape>
</item>
<item>
<shape android:shape="oval">
<padding
android:bottom="1dp"
android:left="1dp"
android:right="1dp"
android:top="1dp" />
<solid android:color="#50CCCCCC" />
<corners android:radius="3dp" />
</shape>
</item>
<!-- Background -->
<item>
<shape android:shape="oval">
<gradient
android:startColor="@color/colorAccent_1"
android:centerColor="@color/colorAccent_2"
android:endColor="@color/colorAccent_3"
android:angle="45"
/>
<corners android:radius="3dp" />
</shape>
</item>
<color name="colorAccent_1">#6f64d6</color>
<color name="colorAccent_2">#7668F8</color>
<color name="colorAccent_3">#6F63FF</color>
Despite the number of answers I'll add another one which IMHO makes the things a bit clearer.
As Rob and wrightmail already mentioned Microsoft.Web.Infrastructure
is a NuGet package (link not needed, you have it in NuGet Package Manager).
Apparently, it was referenced by your project and suddenly disappeared. A number of reason may exists but the important thing is that despite you may have enabled Automatic Package Restore in Visual Studio by:
certain packages may require a manual reinstall. I am not aware what confuses NuGet, maybe manually removing a reference, but here is the solution I usually apply in such cases. The following PM Console helps restoring a package while preserving the original version (not updating to possibly existing new one):
Update-Package Microsoft.Web.Infrastructure -Reinstall
Version preservation may be required if you do not want to accidentally overwrite an existing package with its newer version which possibly removes "old" functionality you may have used in your project.
And, as a proof, despite a bit lengthy one, that the version does not change, here's the output when the command is executed:
PM> Update-Package Microsoft.Web.Infrastructure -Reinstall
Attempting to gather dependencies information for multiple packages with respect to project 'Samples.NuGet\DemoApp\DemoApp', targeting '.NETFramework,Version=v4.5.2'
Attempting to resolve dependencies for multiple packages
Resolving actions install multiple packages
...
Package removal starts here...
...
Removed package 'Microsoft.AspNet.Web.Optimization 1.1.3' from 'packages.config'
Successfully uninstalled 'Microsoft.AspNet.Web.Optimization 1.1.3' from DemoApp
Removed package 'WebGrease 1.5.2' from 'packages.config'
Executing script file 'D:\Projects\DemoApp\packages\WebGrease.1.5.2\tools\uninstall.ps1'
Successfully uninstalled 'WebGrease 1.5.2' from DemoApp
...
More package removals here. Omitted for brevity...
...
Removed package 'Microsoft.Web.Infrastructure 1.0.0.0' from 'packages.config'
Successfully uninstalled 'Microsoft.Web.Infrastructure 1.0.0.0' from DemoApp
...
More package removals here. Omitted for brevity...
...
Removed package 'Antlr 3.4.1.9004' from 'packages.config'
Successfully uninstalled 'Antlr 3.4.1.9004' from MvcLenseApp
Package 'Antlr.3.4.1.9004' already exists in folder 'D:\Projects\Lense.Mvc5\packages'
--- Install packages (in reverse order) ---
Package 'Antlr.3.4.1.9004' already exists in folder 'D:\Projects\DemoApp\packages'
Added package 'Antlr.3.4.1.9004' to 'packages.config'
Successfully installed 'Antlr 3.4.1.9004' to DemoApp
...
More package installs here. Omitted for brevity...
...
Package 'Microsoft.Web.Infrastructure.1.0.0' already exists in folder 'D:\Projects\Lense.Mvc5\packages'
Added package 'Microsoft.Web.Infrastructure.1.0.0' to 'packages.config'
Successfully installed 'Microsoft.Web.Infrastructure 1.0.0' to MvcLenseApp
...
More package installs here. Omitted for brevity...
...
Package 'WebGrease.1.5.2' already exists in folder 'D:\Projects\DemoApp\packages'
Added package 'WebGrease.1.5.2' to 'packages.config'
Executing script file 'D:\Projects\DemoApp\packages\WebGrease.1.5.2\tools\install.ps1'
Successfully installed 'WebGrease 1.5.2' to DemoApp
Package 'Microsoft.AspNet.Web.Optimization.1.1.3' already exists in folder 'D:\Projects\DemoApp\packages'
Added package 'Microsoft.AspNet.Web.Optimization.1.1.3' to 'packages.config'
...
End of package re-install.
...
Successfully installed 'Microsoft.AspNet.Web.Optimization 1.1.3' to DemoApp
PM>
Of course if you wish to reinstall all packages you may need to get familiar with update/install commands in NuGet here and here.
You need to say math.sqrt
when you use it. Or, do from math import sqrt
.
Hmm, I just read your question more thoroughly.... How are you importing math
? I just tried import math
and then math.sqrt
which worked perfectly. Are you doing something like import math as m
? If so, then you have to prefix the function with m
(or whatever name you used after as
).
pow
is working because there are two versions: an always available version in __builtin__
, and another version in math
.
There are numerous Flexbox bugs in IE11 and other browsers - see flexbox on Can I Use -> Known Issues, where the following are listed under IE11:
display: flex
and flex-direction: column
will not properly calculate their flexed childrens' sizes if the container has min-height
but no explicit height
propertymin-height
is usedAlso see Philip Walton's Flexbugs list of issues and workarounds.
Tim Cas one liner is amazing for strings obtained by a call to fgets, because you know they contain a single newline at the end.
If you are in a different context and want to handle strings that may contain more than one newline, you might be looking for strrspn. It is not POSIX, meaning you will not find it on all Unices. I wrote one for my own needs.
/* Returns the length of the segment leading to the last
characters of s in accept. */
size_t strrspn (const char *s, const char *accept)
{
const char *ch;
size_t len = strlen(s);
more:
if (len > 0) {
for (ch = accept ; *ch != 0 ; ch++) {
if (s[len - 1] == *ch) {
len--;
goto more;
}
}
}
return len;
}
For those looking for a Perl chomp equivalent in C, I think this is it (chomp only removes the trailing newline).
line[strrspn(string, "\r\n")] = 0;
The strrcspn function:
/* Returns the length of the segment leading to the last
character of reject in s. */
size_t strrcspn (const char *s, const char *reject)
{
const char *ch;
size_t len = strlen(s);
size_t origlen = len;
while (len > 0) {
for (ch = reject ; *ch != 0 ; ch++) {
if (s[len - 1] == *ch) {
return len;
}
}
len--;
}
return origlen;
}
I have ended up using ABCPdf from webSupergoo. It works really well and for about $350 it has saved me hours and hours based on your comments above. Thanks again Daniel and Bratch for your comments.
List<String> l = new ArrayList<String>(listOfTopicAuthors);
If you pushed to GitHub, force pushing is not enough, delete the repository or contact support
Even if you force push one second afterwards, it is not enough as explained below.
The only valid courses of action are:
is what leaked a changeable credential like a password?
yes: modify your passwords immediately, and consider using more OAuth and API keys!
no (naked pics):
do you care if all issues in the repository get nuked?
no: delete the repository
yes:
Force pushing a second later is not enough because:
GitHub keeps dangling commits for a long time.
GitHub staff does have the power to delete such dangling commits if you contact them however.
I experienced this first hand when I uploaded all GitHub commit emails to a repo they asked me to take it down, so I did, and they did a gc
. Pull requests that contain the data have to be deleted however: that repo data remained accessible up to one year after initial takedown due to this.
Dangling commits can be seen either through:
One convenient way to get the source at that commit then is to use the download zip method, which can accept any reference, e.g.: https://github.com/cirosantilli/myrepo/archive/SHA.zip
It is possible to fetch the missing SHAs either by:
type": "PushEvent"
. E.g. mine: https://api.github.com/users/cirosantilli/events/public (Wayback machine)There are scrappers like http://ghtorrent.org/ and https://www.githubarchive.org/ that regularly pool GitHub data and store it elsewhere.
I could not find if they scrape the actual commit diff, and that is unlikely because there would be too much data, but it is technically possible, and the NSA and friends likely have filters to archive only stuff linked to people or commits of interest.
If you delete the repository instead of just force pushing however, commits do disappear even from the API immediately and give 404, e.g. https://api.github.com/repos/cirosantilli/test-dangling-delete/commits/8c08448b5fbf0f891696819f3b2b2d653f7a3824 This works even if you recreate another repository with the same name.
To test this out, I have created a repo: https://github.com/cirosantilli/test-dangling and did:
git init
git remote add origin [email protected]:cirosantilli/test-dangling.git
touch a
git add .
git commit -m 0
git push
touch b
git add .
git commit -m 1
git push
touch c
git rm b
git add .
git commit --amend --no-edit
git push -f
See also: How to remove a dangling commit from GitHub?
git filter-repo
is now officially recommended over git filter-branch
This is mentioned in the manpage of git filter-branch
in Git 2.5 itself.
With git filter repo, you could either remove certain files with: Remove folder and its contents from git/GitHub's history
pip install git-filter-repo
git filter-repo --path path/to/remove1 --path path/to/remove2 --invert-paths
This automatically removes empty commits.
Or you can replace certain strings with: How to replace a string in a whole Git history?
git filter-repo --replace-text <(echo 'my_password==>xxxxxxxx')
Just to make this simpler, to create a Date
in UTC
you can use Calendar
:
Calendar.getInstance(TimeZone.getTimeZone("UTC"));
Which will construct a new instance for Calendar
using the "UTC" TimeZone
.
If you need a Date
object from that calendar you could just use getTime()
.
Its depends on use-case, if we do not want to allow array and functions to be an Object, we can use the underscore.js builtin functions.
function xyz (obj) {
if (_.isObject(obj) && !_.isFunction(obj) && !_.isArray(obj)) {
// now its sure that obj is an object
}
}
Upper and lower case letters differ only by a single bit. The most efficient way to search them is to ignore this bit, not to convert lower or upper, etc. See keywords COLLATION
for MSSQL, see NLS_SORT=BINARY_CI
if using Oracle, etc.
Another angle on this is returning an Exception, NOT throwing one, from the processing code.
I needed to do this with a templating framework I'm writing. If the user attempts to access a property that doesn't exist on the data, I return the error from deep within the processing function, rather than throwing it.
Then, in the calling code, I can decide whether to throw this returned error, causing the try() to catch(), or just continue:
// process the template
try
{
// this function will pass back a value, or a TemplateExecption if invalid
$result = $this->process($value);
// if the result is an error, choose what to do with it
if($result instanceof TemplateExecption)
{
if(DEBUGGING == TRUE)
{
throw($result); // throw the original error
}
else
{
$result = NULL; // ignore the error
}
}
}
// catch TemplateExceptions
catch(TemplateException $e)
{
// handle template exceptions
}
// catch normal PHP Exceptions
catch(Exception $e)
{
// handle normal exceptions
}
// if we get here, $result was valid, or ignored
return $result;
The result of this is I still get the context of the original error, even though it was thrown at the top.
Another option might be to return a custom NullObject or a UnknownProperty object and compare against that before deciding to trip the catch(), but as you can re-throw errors anyway, and if you're fully in control of the overall structure, I think this is a neat way round the issue of not being able to continue try/catches.
Edit 09/2016: In Python 3 and up use urllib.request instead of urllib2
Actually the simplest way is:
import urllib2 # the lib that handles the url stuff
data = urllib2.urlopen(target_url) # it's a file like object and works just like a file
for line in data: # files are iterable
print line
You don't even need "readlines", as Will suggested. You could even shorten it to: *
import urllib2
for line in urllib2.urlopen(target_url):
print line
But remember in Python, readability matters.
However, this is the simplest way but not the safe way because most of the time with network programming, you don't know if the amount of data to expect will be respected. So you'd generally better read a fixed and reasonable amount of data, something you know to be enough for the data you expect but will prevent your script from been flooded:
import urllib2
data = urllib2.urlopen("http://www.google.com").read(20000) # read only 20 000 chars
data = data.split("\n") # then split it into lines
for line in data:
print line
* Second example in Python 3:
import urllib.request # the lib that handles the url stuff
for line in urllib.request.urlopen(target_url):
print(line.decode('utf-8')) #utf-8 or iso8859-1 or whatever the page encoding scheme is
There are much nicer ways to do it.
Install nuget via chocolatey - much nicer. Install chocolatey: https://chocolatey.org/, then run
cinst Nuget.CommandLine
in your command prompt. This will install nuget and setup environment paths, so nuget is always available.
This works for me. :)
$f=fopen($filename,"w");
# Now UTF-8 - Add byte order mark
fwrite($f, pack("CCC",0xef,0xbb,0xbf));
fwrite($f,$content);
fclose($f);
You should change the location of the M2_HOME into the following:
set M2_HOME=C:\apache-maven-3.0.4\apache-maven
Furthermore the installation of the JDK looks more a JRE instead of JDK. For Maven you need JDK and NOT JRE.
My problem is cookies are not working "within" the same session. –
Burak: I had the same problem. Enabling cookies fixed the issue.
CookieManager.getInstance().setAcceptCookie(true);
Build URL '/search'
as string. Like
"/search?fname="+fname"+"&lname="+lname
Actually I didn't use
`$http({method:'GET', url:'/search', params:{fname: fname, lname: lname}})`
but I'm sure "params" should be JSON.stringify
like for POST
var jsonData = JSON.stringify(
{
fname: fname,
lname: lname
}
);
After:
$http({
method:'GET',
url:'/search',
params: jsonData
});
Name2 is a field. WPF binds only to properties. Change it to:
public string Name2 { get; set; }
Be warned that with this minimal implementation, your TextBox won't respond to programmatic changes to Name2. So for your timer update scenario, you'll need to implement INotifyPropertyChanged:
partial class Window1 : Window, INotifyPropertyChanged
{
public event PropertyChangedEventHandler PropertyChanged;
protected void OnPropertyChanged(string propertyName)
{
PropertyChanged?.Invoke(this, new PropertyChangedEventArgs(propertyName));
}
private string _name2;
public string Name2
{
get { return _name2; }
set
{
if (value != _name2)
{
_name2 = value;
OnPropertyChanged("Name2");
}
}
}
}
You should consider moving this to a separate data object rather than on your Window class.
You can access characters in strings in the same way as you would access an array index, e.g.
$length = strlen($string);
$thisWordCodeVerdeeld = array();
for ($i=0; $i<$length; $i++) {
$thisWordCodeVerdeeld[$i] = $string[$i];
}
You could also do:
$thisWordCodeVerdeeld = str_split($string);
However you might find it is easier to validate the string as a whole string, e.g. using regular expressions.
I had a similar experience with Chai-Webdriver for Selenium.
I added await
to the assertion and it fixed the issue:
Example using Cucumberjs:
Then(/I see heading with the text of Tasks/, async function() {
await chai.expect('h1').dom.to.contain.text('Tasks');
});
The JavaDoc explains it very well:
With this option set to a non-zero timeout, a read() call on the InputStream associated with this Socket will block for only this amount of time. If the timeout expires, a java.net.SocketTimeoutException is raised, though the Socket is still valid. The option must be enabled prior to entering the blocking operation to have effect. The timeout must be > 0. A timeout of zero is interpreted as an infinite timeout.
SO_TIMEOUT
is the timeout that a read()
call will block. If the timeout is reached, a java.net.SocketTimeoutException will be thrown. If you want to block forever put this option to zero (the default value), then the read()
call will block until at least 1 byte could be read.
In Objective-C, a selector's signature consists of:
Selectors have no knowledge of:
Here's a class implementation where performMethodsViaSelectors method performs the other class methods by way of selectors:
@implementation ClassForSelectors
- (void) fooNoInputs {
NSLog(@"Does nothing");
}
- (void) fooOneIput:(NSString*) first {
NSLog(@"Logs %@", first);
}
- (void) fooFirstInput:(NSString*) first secondInput:(NSString*) second {
NSLog(@"Logs %@ then %@", first, second);
}
- (void) performMethodsViaSelectors {
[self performSelector:@selector(fooNoInputs)];
[self performSelector:@selector(fooOneInput:) withObject:@"first"];
[self performSelector:@selector(fooFirstInput:secondInput:) withObject:@"first" withObject:@"second"];
}
@end
The method you want to create a selector for has a single input, so you would create a selector for it like so:
SEL myTestSelector = @selector(myTest:);
Adding to @zzzzzzz answer, I ran the command:python3 -c "import sys; print(sys.path)"
and it provided me with different paths comparing to the same command with python
. The paths that were displayed with python3
were "python3 oriented".
See the output of the two different commands:
python -c "import sys; print(sys.path)"
['', '/usr/lib/python2.7', '/usr/lib/python2.7/plat-x86_64-linux-gnu', '/usr/lib/python2.7/lib-tk', '/usr/lib/python2.7/lib-old', '/usr/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/dist-packages', '/usr/local/lib/python2.7/dist-packages/setuptools-39.1.0-py2.7.egg', '/usr/lib/python2.7/dist-packages']
python3 -c "import sys; print(sys.path)"
['', '/usr/lib/python36.zip', '/usr/lib/python3.6', '/usr/lib/python3.6/lib-dynload', '/usr/local/lib/python3.6/dist-packages', '/usr/lib/python3/dist-packages']
Both commands were executed on my Ubuntu 18.04 machine.
Similar to what StuartLC was saying, my problem was not resolved until I enabled TCP/IP protocol under SQL Network Configuration>>Protocols for MSSQLSERVER in the SQL Server Configuration Manager dialogue box. After enabling this and a restart, my SSMS connected right away with just the instance name (no ~\MSSQLSERVER).
Give this solution a try
you may have to use div instead of li for that
.DivParent {_x000D_
height: 100px;_x000D_
border: 1px solid lime;_x000D_
white-space: nowrap;_x000D_
}_x000D_
.verticallyAlignedDiv {_x000D_
display: inline-block;_x000D_
vertical-align: middle;_x000D_
white-space: normal;_x000D_
}_x000D_
.DivHelper {_x000D_
display: inline-block;_x000D_
vertical-align: middle;_x000D_
height:100%;_x000D_
}
_x000D_
<div class="DivParent">_x000D_
<div class="verticallyAlignedDiv">_x000D_
<p>Isnt it good!</p>_x000D_
_x000D_
</div><div class="DivHelper"></div>_x000D_
</div>
_x000D_
Update google services and Firebase library to latest version
google services
classpath 'com.google.gms:google-services:4.3.1'
firebase
implementation 'com.google.firebase:firebase-database:19.0.0'
Specify the /FA switch for the cl compiler. Depending on the value of the switch either only assembly code or high-level code and assembly code is integrated. The filename gets .asm file extension. Here are the supported values:
check up blur()
:
$('#textarea').blur()
source: http://api.jquery.com/blur/
May be with:
SELECT count(*) FROM `table`
where
created_at>='2011-03-17 06:42:10' and created_at<='2011-03-17 07:42:50';
or use between
:
SELECT count(*) FROM `table`
where
created_at between '2011-03-17 06:42:10' and '2011-03-17 07:42:50';
You can change the datetime as per your need. May be use curdate()
or now()
to get the desired dates.
I wonder why you find as solution the "white-space" with "nowrap" or "pre", it is not doing the correct behaviour: you force your text in a single line! The text should break lines, but not break words as default. This is caused by some css attributes: word-wrap, overflow-wrap, word-break, and hyphens. So you can have either:
word-break: break-all;
word-wrap: break-word;
overflow-wrap: break-word;
-webkit-hyphens: auto;
-moz-hyphens: auto;
-ms-hyphens: auto;
hyphens: auto;
So the solution is remove them, or override them with "unset" or "normal":
word-break: unset;
word-wrap: unset;
overflow-wrap: unset;
-webkit-hyphens: unset;
-moz-hyphens: unset;
-ms-hyphens: unset;
hyphens: unset;
UPDATE: i provide also proof with JSfiddle: https://jsfiddle.net/azozp8rr/
Okay. If you do not want to store the file in database and store in the application, like assets (custom folder), you can define non-db instance variable defined by attr_accessor: document and use form_for - f.file_field
to get the file,
In controller,
@person = Person.new(person_params)
Here person_params
return whitelisted params[:person]
(define yourself)
Save file as,
dir = "#{Rails.root}/app/assets/custom_path"
FileUtils.mkdir(dir) unless File.directory? dir
document = @person.document.document_file_name # check document uploaded params
File.copy_stream(@font.document, "#{dir}/#{document}")
Note, Add this path in .gitignore
& if you want to use this file again add this path asset_path
an of application by application.rb
Whenever form read file field, it get store in tmp folder, later you can store at your place, I gave example to store at assets
note: Storing files like this will increase the size of the application, better to store in the database using paperclip
.
If you want to match the entire string where you want to match everything but certain strings you can do it like this:
^(?!(red|green|blue)$).*$
This says, start the match from the beginning of the string where it cannot start and end with red, green, or blue and match anything else to the end of the string.
You can try it here: https://regex101.com/r/rMbYHz/2
Note that this only works with regex engines that support a negative lookahead.
For Makefile.PL-based distributions, use the INSTALL_BASE option when generating Makefiles:
perl Makefile.PL INSTALL_BASE=/mydir/perl
The first argument to parse() is the expected format. You have to change that to Date.parse("E MMM dd H:m:s z yyyy", testDate)
for it to work. (Note you don't need to create a new Date object, it's a static method)
If you don't know in advance what format, you'll have to find a special parsing library for that. In Ruby there's a library called Chronic, but I'm not aware of a Groovy equivalent. Edit: There is a Java port of the library called jChronic, you might want to check it out.
Javascript which runs on the client machine can't access the local disk file system due to security restrictions.
If you want to access the client's disk file system then look into an embedded client application which you serve up from your webpage, like an Applet, Silverlight or something like that. If you like to access the server's disk file system, then look for the solution in the server side corner using a server side programming language like Java, PHP, etc, whatever your webserver is currently using/supporting.
You could use advanced options to run Google tests.
To run only some unit tests you could use --gtest_filter=Test_Cases1*
command line option with value that accepts the *
and ?
wildcards for matching with multiple tests. I think it will solve your problem.
UPD:
Well, the question was how to run specific test cases. Integration of gtest with your GUI is another thing, which I can't really comment, because you didn't provide details of your approach. However I believe the following approach might be a good start:
--gtest_list_tests
--gtest_filter
Sometimes Xcode could not control over correctly cell outlet connection.
Somehow my current cell’s label/button has connected another cell I just remove those and error goes away.
WARNING: DO NOT USE IN A PRODUCTION SYSTEM
/# df
...
/dev/xvda1 51467016 39384516 9886300 80% /
...
Ok, let's first try system prune
#/ docker system prune --volumes
...
/# df
...
/dev/xvda1 51467016 38613596 10657220 79% /
...
Not so great, seems like it cleaned up a few megabytes. Let's go crazy now:
/# sudo su
/# service docker stop
/# cd /var/lib/docker
/var/lib/docker# rm -rf *
/# service docker start
/var/lib/docker# df
...
/dev/xvda1 51467016 8086924 41183892 17% /
...
Nice! Just remember that this is NOT recommended in anything but a throw-away server. At this point Docker's internal database won't be able to find any of these overlays and it may cause unintended consequences.
It's used for raising errors.
if something:
raise Exception('My error!')
Some examples here
webview.setInitialScale(1);
webview.getSettings().setLoadWithOverviewMode(true);
webview.getSettings().setUseWideViewPort(true);
webview.getSettings().setJavaScriptEnabled(true);
will work, but remember to remove something like:
<meta name="viewport" content="user-scalable=no"/>
if existed in the html file or change user-scalable=yes, otherwise it won't.
Be warned, the majority of the mathematically calculated examples have a hard limit of 2038-01-18
dates and will not work with fictional dates.
As there was a lack of DateTime
and DateInterval
based examples, I wanted to provide a multi-purpose function that satisfies the OP's need and others wanting compound elapsed periods, such as 1 month 2 days ago
. Along with a bunch of other use cases, such as a limit to display the date instead of the elapsed time, or to filter out portions of the elapsed time result.
Additionally the majority of the examples assume elapsed is from the current time, where the below function allows for it to be overridden with the desired end date.
/**
* multi-purpose function to calculate the time elapsed between $start and optional $end
* @param string|null $start the date string to start calculation
* @param string|null $end the date string to end calculation
* @param string $suffix the suffix string to include in the calculated string
* @param string $format the format of the resulting date if limit is reached or no periods were found
* @param string $separator the separator between periods to use when filter is not true
* @param null|string $limit date string to stop calculations on and display the date if reached - ex: 1 month
* @param bool|array $filter false to display all periods, true to display first period matching the minimum, or array of periods to display ['year', 'month']
* @param int $minimum the minimum value needed to include a period
* @return string
*/
function elapsedTimeString($start, $end = null, $limit = null, $filter = true, $suffix = 'ago', $format = 'Y-m-d', $separator = ' ', $minimum = 1)
{
$dates = (object) array(
'start' => new DateTime($start ? : 'now'),
'end' => new DateTime($end ? : 'now'),
'intervals' => array('y' => 'year', 'm' => 'month', 'd' => 'day', 'h' => 'hour', 'i' => 'minute', 's' => 'second'),
'periods' => array()
);
$elapsed = (object) array(
'interval' => $dates->start->diff($dates->end),
'unknown' => 'unknown'
);
if ($elapsed->interval->invert === 1) {
return trim('0 seconds ' . $suffix);
}
if (false === empty($limit)) {
$dates->limit = new DateTime($limit);
if (date_create()->add($elapsed->interval) > $dates->limit) {
return $dates->start->format($format) ? : $elapsed->unknown;
}
}
if (true === is_array($filter)) {
$dates->intervals = array_intersect($dates->intervals, $filter);
$filter = false;
}
foreach ($dates->intervals as $period => $name) {
$value = $elapsed->interval->$period;
if ($value >= $minimum) {
$dates->periods[] = vsprintf('%1$s %2$s%3$s', array($value, $name, ($value !== 1 ? 's' : '')));
if (true === $filter) {
break;
}
}
}
if (false === empty($dates->periods)) {
return trim(vsprintf('%1$s %2$s', array(implode($separator, $dates->periods), $suffix)));
}
return $dates->start->format($format) ? : $elapsed->unknown;
}
One thing to note - the retrieved intervals for the supplied filter values do not carry over to the next period. The filter merely displays the resulting value of the supplied periods and does not recalculate the periods to display only the desired filter total.
Usage
For the OP's need of displaying the highest period (as of 2015-02-24).
echo elapsedTimeString('2010-04-26');
/** 4 years ago */
To display compound periods and supply a custom end date (note the lack of time supplied and fictional dates).
echo elapsedTimeString('1920-01-01', '2500-02-24', null, false);
/** 580 years 1 month 23 days ago */
To display the result of filtered periods (ordering of array doesn't matter).
echo elapsedTimeString('2010-05-26', '2012-02-24', null, ['month', 'year']);
/** 1 year 8 months ago */
To display the start date in the supplied format (default Y-m-d) if the limit is reached.
echo elapsedTimeString('2010-05-26', '2012-02-24', '1 year');
/** 2010-05-26 */
There are bunch of other use cases. It can also easily be adapted to accept unix timestamps and/or DateInterval objects for the start, end, or limit arguments.
Not so hard:
#include <thread>
void Test::runMultiThread()
{
std::thread t1(&Test::calculate, this, 0, 10);
std::thread t2(&Test::calculate, this, 11, 20);
t1.join();
t2.join();
}
If the result of the computation is still needed, use a future instead:
#include <future>
void Test::runMultiThread()
{
auto f1 = std::async(&Test::calculate, this, 0, 10);
auto f2 = std::async(&Test::calculate, this, 11, 20);
auto res1 = f1.get();
auto res2 = f2.get();
}
If you haven't commit the local changes yet since the last pull/clone, you can use:
git checkout *
git pull
checkout
will clear your local changes with the last local commit, and
pull
will sincronize it to the remote repository
I know this is old but by far the easier solution is to just use
var temp = new Date("2010-08-17T12:09:36");
I agree with Jarek, and I furthermore note that the ISO offset separator character is a colon, so I think the final answer should be:
isodate.datetime_isoformat(datetime.datetime.now()) + str.format('{0:+06.2f}', -float(time.timezone) / 3600).replace('.', ':')
You have to fetch the whole data in the list and then do the iteration as it is a file and will become inefficient otherwise.
private static final Type REVIEW_TYPE = new TypeToken<List<Review>>() {
}.getType();
Gson gson = new Gson();
JsonReader reader = new JsonReader(new FileReader(filename));
List<Review> data = gson.fromJson(reader, REVIEW_TYPE); // contains the whole reviews list
data.toScreen(); // prints to screen some values
You can't specify units in width
/height
attributes of a table; these are always in pixels, but you should not use them at all since they are deprecated.
<?php
$dateTime = new DateTime('now', new DateTimeZone('Asia/Kolkata'));
echo $dateTime->format("d/m/y H:i A");
?>
You can use this to display the date like this
22/06/15 10:46 AM
If you give the following command you'll get the list of activities including commits, merges.
git reflog
Your last commit should probably be at 'HEAD@{0}'
. You can check the same with your commit message.
To go to that point, use the command
git reset --hard 'HEAD@{0}'
Your merge will be reverted. If in case you have new files left, discard those changes from the merge.
Use the matplotlib savefig
function with the keyword argument transparent=True
to save the image as a png file.
In [30]: x = np.linspace(0,6,31)
In [31]: y = np.exp(-0.5*x) * np.sin(x)
In [32]: plot(x, y, 'bo-')
Out[32]: [<matplotlib.lines.Line2D at 0x3f29750>]
In [33]: savefig('demo.png', transparent=True)
Result:
Of course, that plot doesn't demonstrate the transparency. Here's a screenshot of the PNG file displayed using the ImageMagick display
command. The checkerboard pattern is the background that is visible through the transparent parts of the PNG file.
It seems to me the last line of your example code should simply be:
Task<Item> itsMe = o as Task<Item>;
Or am I missing something?
finalize method is not guaranteed.This method is called when the object becomes eligible for GC. There are many situations where the objects may not be garbage collected.
you may simply create your string in multiple steps, a bit redundant but it keeps the code readable and maintain sanity while debugging or editing
SqlQueryString = "Insert into Employee values("
SqlQueryString = SqlQueryString & txtEmployeeNo.Value & " ,"
SqlQueryString = SqlQueryString & " '" & txtEmployeeNo.Value & "',"
SqlQueryString = SqlQueryString & " '" & txtContractStartDate.Value & "',"
SqlQueryString = SqlQueryString & " '" & txtSeatNo.Value & "',"
SqlQueryString = SqlQueryString & " '" & txtContractStartDate.Value & "',"
SqlQueryString = SqlQueryString & " '" & txtSeatNo.Value & "',"
SqlQueryString = SqlQueryString & " '" & txtFloor.Value & "',"
SqlQueryString = SqlQueryString & " '" & txtLeaves.Value & "' )"
def num(s):
"""num(s)
num(3),num(3.7)-->3
num('3')-->3, num('3.7')-->3.7
num('3,700')-->ValueError
num('3a'),num('a3'),-->ValueError
num('3e4') --> 30000.0
"""
try:
return int(s)
except ValueError:
try:
return float(s)
except ValueError:
raise ValueError('argument is not a string of number')
I have a data set with Time as the x-axis, and Intensity as y-axis. I'd need to first delete all the default axes except the axes' labels with:
plot(Time,Intensity,axes=F)
Then I rebuild the plot's elements with:
box() # create a wrap around the points plotted
axis(labels=NA,side=1,tck=-0.015,at=c(seq(from=0,to=1000,by=100))) # labels = NA prevents the creation of the numbers and tick marks, tck is how long the tick mark is.
axis(labels=NA,side=2,tck=-0.015)
axis(lwd=0,side=1,line=-0.4,at=c(seq(from=0,to=1000,by=100))) # lwd option sets the tick mark to 0 length because tck already takes care of the mark
axis(lwd=0,line=-0.4,side=2,las=1) # las changes the direction of the number labels to horizontal instead of vertical.
So, at = c(...)
specifies the collection of positions to put the tick marks. Here I'd like to put the marks at 0, 100, 200,..., 1000. seq(from =...,to =...,by =...)
gives me the choice of limits and the increments.
For me, the fix was to upgrade the version of System.Web.Optimization to 1.1.0.0 When I was at version 1.0.0.0 it would never resolve a .map file in a subdirectory (i.e. correctly minify and bundle scripts in a subdirectory)
You can simply import by
mysqlimport --ignore-lines=1 --lines-terminated-by='\n' --fields-terminated-by=',' --fields-enclosed-by='"' --verbose --local -uroot -proot db_name csv_import.csv
Note: Csv File name and Table name should be same
I would avoid using a relative path. Remember that docker is a daemon/client relationship.
When you are executing the compose, it's essentially just breaking down into various docker client commands, which are then passed to the daemon. That ./database
is then relative to the daemon, not the client.
Now, the docker dev team has some back and forth on this issue, but the bottom line is it can have some unexpected results.
In short, don't use a relative path, use an absolute path.
"Which editor/IDE for ...?" is a longstanding way to start a "My dog is too prettier than yours!" slapfest. Nowadays most editors from vim
upwards can be used, there are multiple good alternatives, and even IDEs that started as C or Java tools work pretty well with Python and other dynamic languages.
That said, having tried a bunch of IDEs (Eclipse, NetBeans, XCode, Komodo, PyCharm, ...), I am a fan of ActiveState's Komodo IDE. I use it on Mac OS X primarily, though I've used it for years on Windows as well. The one license follows you to any platform.
Komodo is well-integrated with popular ActiveState builds of the languages themselves (esp. for Windows), works well with the fabulous (and Pythonic) Mercurial change management system (among others), and has good-to-excellent abilities for core tasks like code editing, syntax coloring, code completion, real-time syntax checking, and visual debugging. It is a little weak when it comes to pre-integrated refactoring and code-check tools (e.g. rope, pylint), but it is extensible and has a good facility for integrating external and custom tools.
Some of the things I like about Komodo go beyond the write-run-debug loop. ActiveState has long supported the development community (e.g. with free language builds, package repositories, a recipes site, ...), since before dynamic languages were the trend. The base Komodo Edit editor is free and open source, an extension of Mozilla's Firefox technologies. And Komodo is multi-lingual. I never end up doing just Python, just Perl, or just whatever. Komodo works with the core language (Python, Perl, Ruby, PHP, JavaScript) alongside supporting languages (XML, XSLT, SQL, X/HTML, CSS), non-dynamic languages (Java, C, etc.), and helpers (Makefiles, INI and config files, shell scripts, custom little languages, etc.) Others can do that too, but Komodo puts them all in once place, ready to go. It's a Swiss Army Knife for dynamic languages. (This is contra PyCharm, e.g., which is great itself, but I'd need like a half-dozen of JetBrains' individual IDEs to cover all the things I do).
Komodo IDE is by no means perfect, and editors/IDEs are the ultimate YMMV choice. But I am regularly delighted to use it, and every year I re-up my support subscription quite happily. Indeed, I just remembered! That's coming up this month. Credit card: Out. I have no commercial connection to ActiveState--just a happy customer.
At my work we have our restful services on a different port number and the data resides in db2 on a pair of AS400s. We typically use the $.getJSON
AJAX method because it easily returns JSONP using the ?callback=?
without having any issues with CORS.
data ='USER=<?echo trim($USER)?>' +
'&QRYTYPE=' + $("input[name=QRYTYPE]:checked").val();
//Call the REST program/method returns: JSONP
$.getJSON( "http://www.stackoverflow.com/rest/resttest?callback=?",data)
.done(function( json ) {
// loading...
if ($.trim(json.ERROR) != '') {
$("#error-msg").text(message).show();
}
else{
$(".error").hide();
$("#jsonp").text(json.whatever);
}
})
.fail(function( jqXHR, textStatus, error ) {
var err = textStatus + ", " + error;
alert('Unable to Connect to Server.\n Try again Later.\n Request Failed: ' + err);
});
Elaborating on previous answer by Pir Fahim, he's right but i'm using selectedItem.Text (only way to make it work to me)
Use the SelectedIndexChanged() event to store the data somewhere. In my case, i usually fill a custom class, something like:
class myItem {
string name {get; set;}
string price {get; set;}
string desc {get; set;}
}
private void listBox1_SelectedIndexChanged(object sender, EventArgs e)
{
myItem selected_item = new myItem();
selected_item.name = listBox1.SelectedItem.Text;
Retrieve (selected_item.name);
}
And then you can retrieve the rest of data from a List of "myItems"..
myItem Retrieve (string wanted_item) {
foreach (myItem item in my_items_list) {
if (item.name == wanted_item) {
// This is the selected item
return item;
}
}
return null;
}
In my case it was simply that I had a variable named the same as a function.
Example:
def cleanCache = functionReturningABoolean()
if( cleanCache ){
echo "Clean cache option is true, do not uninstall previous features / urls"
uninstallCmd = ""
// and we call the cleanCache method
cleanCache(userId, serverName)
}
...
and later in my code I have the function:
def cleanCache(user, server){
//some operations to the server
}
Apparently the Groovy language does not support this (but other languages like Java does).
I just renamed my function to executeCleanCache
and it works perfectly (or you can also rename your variable whatever option you prefer).
To flatten a MultiIndex inside a chain of other DataFrame methods, define a function like this:
def flatten_index(df):
df_copy = df.copy()
df_copy.columns = ['_'.join(col).rstrip('_') for col in df_copy.columns.values]
return df_copy.reset_index()
Then use the pipe
method to apply this function in the chain of DataFrame methods, after groupby
and agg
but before any other methods in the chain:
my_df \
.groupby('group') \
.agg({'value': ['count']}) \
.pipe(flatten_index) \
.sort_values('value_count')
numpy.ndarray
can contain any type of element, e.g. int
, float
, string
etc. Check the type an do a conversion if neccessary.
radio_1.checked
checkBtn.onclick = e=> console.log( radio_1.checked );
_x000D_
<!-- Question html -->
<form>
<div id='type'>
<input type='radio' id='radio_1' name='type' value='1' />
<input type='radio' id='radio_2' name='type' value='2' />
<input type='radio' id='radio_3' name='type' value='3' />
</div>
</form>
<!-- Test html -->
<button id="checkBtn">Check</button>
_x000D_
@NLwino, yery good query with a few errors for keyword usage. I had to modify it a little to wrap the keywords with [ ] and also look char and ntext columns.
DECLARE @searchstring NVARCHAR(255)
SET @searchstring = '%WDB1014%'
DECLARE @sql NVARCHAR(max)
SELECT @sql = STUFF((
SELECT ' UNION ALL SELECT ''' + TABLE_NAME + ''' AS tbl, ''' + COLUMN_NAME + ''' AS col, [' + COLUMN_NAME + '] AS val' +
' FROM ' + TABLE_SCHEMA + '.[' + TABLE_NAME +
'] WHERE [' + COLUMN_NAME + '] LIKE ''' + @searchstring + ''''
FROM INFORMATION_SCHEMA.COLUMNS
WHERE DATA_TYPE in ('nvarchar', 'varchar', 'char', 'ntext')
FOR XML PATH('')
) ,1, 11, '')
Exec (@sql)
I ran it on 2.5 GB database and it came back in 51 seconds
The reader acts like a generator. On a file with some fake data:
>>> import sys, csv
>>> data = csv.reader(open('data.csv'),delimiter=';')
>>> data
<_csv.reader object at 0x1004a11a0>
>>> data.next()
['a', ' b', ' c']
>>> data.next()
['x', ' y', ' z']
>>> data.next()
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
StopIteration
Using operator.itemgetter as Ignacio suggests:
>>> data = csv.reader(open('data.csv'),delimiter=';')
>>> import operator
>>> sortedlist = sorted(data, key=operator.itemgetter(2), reverse=True)
>>> sortedlist
[['x', ' y', ' z'], ['a', ' b', ' c']]
To be clear on the bits vs byte, vs characters.
2**8
possible combinations: 256 combinationsWhen you look at a hex character,
[0-9] + [a-f]
: the full range of 0,1,2,3,4,5,6,7,8,9,a,b,c,d,e,f
2**4
: that means one hex character can store 4 bits in a byte (half a byte).2**8
combinations.[0-9a-f][0-9a-f]
and that represents both halfs of a byte (we call a half-byte a nibble).When you look at a regular single-byte character, (we're totally going to skip multi-byte and wide-characters here)
2**8
range.md5()
could store all that, you'd see all the lowercase letters, all the uppercase letters, all the punctuation and things like ¡°ÀÐàð
, whitespace like (newlines, and tabs), and control characters (which you can't even see and many of which aren't in use).So they're clearly different and I hope that provides the best break down of the differences.
Try this one-liner to reverse a dictionary:
reversed_dictionary = dict(map(reversed, dictionary.items()))
worked for me too:
SimpleDateFormat sdf = new SimpleDateFormat("dd/MM/yyyy");
Date parsed = null;
try {
parsed = sdf.parse("02/01/2014");
} catch (ParseException e1) {
// TODO Auto-generated catch block
e1.printStackTrace();
}
java.sql.Date data = new java.sql.Date(parsed.getTime());
contato.setDataNascimento( data);
// Contato DataNascimento era Calendar
//contato.setDataNascimento(Calendar.getInstance());
// grave nessa conexão!!!
ContatoDao dao = new ContatoDao("mysql");
// método elegante
dao.adiciona(contato);
System.out.println("Banco: ["+dao.getNome()+"] Gravado! Data: "+contato.getDataNascimento());
As others have mentioned: CSS-3 says that you can use the rgba(...)
syntax to specify a border color with an opacity (alpha) value.
here's a quick example if you'd like to check it.
It works in Safari and Chrome (probably works in all webkit browsers).
It works in Firefox
I doubt that it works at all in IE, but I suspect that there is some filter or behavior that will make it work.
There's also this stackoverflow post, which suggests some other issues--namely, that the border renders on-top-of any background color (or background image) that you've specified; thus limiting the usefulness of border alpha in many cases.
You can use bit.ly api to create facebook short urls find the documentation here http://api.bitly.com
The above answers offer somewhat clumsy solutions for the following reasons:
I don't like having to wrap
the input
first and then getting the html, it is very involved and dirty.
Cross browser JS is handy and it seems that in this case there are too many unknowns to reliably use type
switching (which, again, is a bit dirty) and setting value
to ''
So I offer you my jQuery based solution:
$('#myinput').replaceWith($('#myinput').clone())
It does what it says, it replaces the input with a clone of itself. The clone won't have the file selected.
Advantages:
Result: Happy programmer
You can read about jQuery Ajax from official jQuery Site: https://api.jquery.com/jQuery.ajax/
If you don't want to use any click event then you can set timer for periodically update.
Below code may be help you just example.
function update() {
$.get("response.php", function(data) {
$("#some_div").html(data);
window.setTimeout(update, 10000);
});
}
Above function will call after every 10 seconds and get content from response.php and update in #some_div
.
One solution to this is to use Maven. From the project root folder do mvn eclipse:clean followed by mvn eclipse:eclipse. This will generate the .project and .classpath files required by eclipse.
Using Base64 to embed images in html is awesome. Nonetheless, please notice that base64 strings can make your email size big.
Therefore,
1) If you have many images, uploading your images to a server and loading those images from the server can make your email size smaller. (You can get a lot of free services via Google)
2) If there are just a few images in your mail, using base64 strings is definitely an awesome option.
Besides the choices provided by existing answers, you can also use a command to generate a base64 string on linux:
base64 test.jpg
This works for comma separated values
DECLARE @ARC_CHECKNUM VARCHAR(MAX)
SET @ARC_CHECKNUM = 'ABC,135,MED,ASFSDFSF,AXX'
SELECT ' AND (a.arc_checknum LIKE ''%' + REPLACE(@arc_checknum,',','%'' OR a.arc_checknum LIKE ''%') + '%'')''
Evaluates to:
AND (a.arc_checknum LIKE '%ABC%' OR a.arc_checknum LIKE '%135%' OR a.arc_checknum LIKE '%MED%' OR a.arc_checknum LIKE '%ASFSDFSF%' OR a.arc_checknum LIKE '%AXX%')
If you want it to use indexes, you must omit the first '%'
character.
Following up on Chad's excellent answer, if you get an error of "Error: Could not find or load main class" - and you spend a couple hours trying to troubleshoot it, whether your executing a shell script that starts your java app or starting it from systemd itself - and you know your classpath is 100% correct, e.g. manually running the shell script works as well as running what you have in systemd execstart. Be sure you're running things as the correct user! In my case, I had tried different users, after quite a while of troubleshooting - i finally had a hunch, put root as the user - voila, the app started correctly. After determining it was a wrong user issue, I chown -R user:user
the folder and subfolders and the app ran correctly as the specified user and group so no longer needed to run it as root (bad security).
It's a function which is a member of a class:
class C:
def my_method(self):
print("I am a C")
c = C()
c.my_method() # Prints("I am a C")
Simple as that!
(There are also some alternative kinds of method, allowing you to control the relationship between the class and the function. But I'm guessing from your question that you're not asking about that, but rather just the basics.)
It can be accomplished like this docs
$('input').trigger("keydown", {which: 50});
Read two integers from the user. Then compute/display the remainder and quotient,
// When the larger integer is divided by the smaller integer
Console.WriteLine("Enter integer 1 please :");
double a5 = double.Parse(Console.ReadLine());
Console.WriteLine("Enter integer 2 please :");
double b5 = double.Parse(Console.ReadLine());
double div = a5 / b5;
Console.WriteLine(div);
double mod = a5 % b5;
Console.WriteLine(mod);
Console.ReadLine();
I have just discovered a way to append text and its working fine at least.
var text = 'Put any text here';
$('#text').append(text);
You can change text according to your need.
Hope this helps.
The other answers will work for most strings, but you can end up unescaping an already escaped double quote, which is probably not what you want.
To work correctly, you are going to need to escape all backslashes and then escape all double quotes, like this:
var test_str = '"first \\" middle \\" last "';
var result = test_str.replace(/\\/g, '\\\\').replace(/\"/g, '\\"');
depending on how you need to use the string, and the other escaped charaters involved, this may still have some issues, but I think it will probably work in most cases.
For me, when I do Immediately invoked function, I need to put ;
at the end of require()
.
Error:
const fs = require('fs')
(() => {
console.log('wow')
})()
Good:
const fs = require('fs');
(() => {
console.log('wow')
})()
DECLARE @MyDate datetime
-- ... set your datetime's initial value ...'
DATEADD(d, 1, @MyDate)
May be you are using a wrong version of mongodb list file. I faced this problem but it's my mistake when not selecting the right list file for Ubuntu 16.04. The default selected is for Ubuntu 14.04 and it's the reason for my error: "Failed to start mongod.service: Unit mongod.service not found."
Unfortunately when you have a complex array, only np.sort(temp)[::-1]
works properly. The two other methods mentioned here are not effective.
Add the following to add hover effect on disabled button:
.buttonDisabled:hover
{
/*your code goes here*/
}
One solution is to use JavaScript to add the required CSS classes after the page is ready. For example, styling django form output with bootstrap classes (jQuery used for brevity):
<script type="text/javascript">
$(document).ready(function() {
$('#some_django_form_id').find("input[type='text'], select, textarea").each(function(index, element) {
$(element).addClass("form-control");
});
});
</script>
This avoids the ugliness of mixing styling specifics with your business logic.
You should try and avoid jQuery in ReactJS. But if you really want to use it, you'd put it in componentDidMount() lifecycle function of the component.
e.g.
class App extends React.Component {
componentDidMount() {
// Jquery here $(...)...
}
// ...
}
Ideally, you'd want to create a reusable Accordion component. For this you could use Jquery, or just use plain javascript + CSS.
class Accordion extends React.Component {
constructor() {
super();
this._handleClick = this._handleClick.bind(this);
}
componentDidMount() {
this._handleClick();
}
_handleClick() {
const acc = this._acc.children;
for (let i = 0; i < acc.length; i++) {
let a = acc[i];
a.onclick = () => a.classList.toggle("active");
}
}
render() {
return (
<div
ref={a => this._acc = a}
onClick={this._handleClick}>
{this.props.children}
</div>
)
}
}
Then you can use it in any component like so:
class App extends React.Component {
render() {
return (
<div>
<Accordion>
<div className="accor">
<div className="head">Head 1</div>
<div className="body"></div>
</div>
</Accordion>
</div>
);
}
}
Codepen link here: https://codepen.io/jzmmm/pen/JKLwEA?editors=0110 (I changed this link to https ^)
Your selector is missing a .
and though you say you want to change the border-color
- you're adding and removing a class that sets the background-color
function url_exists($url) {
$headers = @get_headers($url);
return (strpos($headers[0],'200')===false)? false:true;
}
Try to make the bounds
's size integer.
#include <math.h>
....
if (ratio > 1) {
bounds.size.width = resolution;
bounds.size.height = round(bounds.size.width / ratio);
} else {
bounds.size.height = resolution;
bounds.size.width = round(bounds.size.height * ratio);
}
AlertDialog.setView(View view)
does add the given view to the R.id.custom FrameLayout
. The following is a snippet of Android source code from AlertController.setupView()
which finally handles this (mView
is the view given to AlertDialog.setView
method).
...
FrameLayout custom = (FrameLayout) mWindow.findViewById(R.id.**custom**);
custom.addView(**mView**, new LayoutParams(FILL_PARENT, FILL_PARENT));
...
Container(
width: double.infinity,
child: RaisedButton(...),
),
I found many examples on the Google but there are bad because just remove part of string with "."
Actually that is absolutely the correct thing to do. Go ahead and use that.
The file extension is everything after the last dot, and there is no requirement for a file extension to be any particular number of characters. Even talking only about Windows, it already comes with file extensions that don't fit 3-4 characters, such as eg. .manifest
.
You can use Pattern pattern = Pattern.compile( "[^<'tagname'/>]" );
You can use Map.
- A new data structure introduced in JavaScript ES6.
- Alternative to JavaScript Object for storing key/value pairs.
- Has useful methods for iteration over the key/value pairs.
var map = new Map();
map.set('name', 'John');
map.set('id', 11);
// Get the full content of the Map
console.log(map); // Map { 'name' => 'John', 'id' => 11 }
Get value of the Map using key
console.log(map.get('name')); // John
console.log(map.get('id')); // 11
Get size of the Map
console.log(map.size); // 2
Check key exists in Map
console.log(map.has('name')); // true
console.log(map.has('age')); // false
Get keys
console.log(map.keys()); // MapIterator { 'name', 'id' }
Get values
console.log(map.values()); // MapIterator { 'John', 11 }
Get elements of the Map
for (let element of map) {
console.log(element);
}
// Output:
// [ 'name', 'John' ]
// [ 'id', 11 ]
Print key value pairs
for (let [key, value] of map) {
console.log(key + " - " + value);
}
// Output:
// name - John
// id - 11
Print only keys of the Map
for (let key of map.keys()) {
console.log(key);
}
// Output:
// name
// id
Print only values of the Map
for (let value of map.values()) {
console.log(value);
}
// Output:
// John
// 11
var data = [
{
id : "001",
name : "apple",
category : "fruit",
color : "red"
},
{
id : "002",
name : "melon",
category : "fruit",
color : "green"
},
{
id : "003",
name : "banana",
category : "fruit",
color : "yellow"
}
];
for(var i = 0, len = data.length; i < length; i++) {
var temp = '<tr><td>' + data[i].id + '</td>';
temp+= '<td>' + data[i].name+ '</td>';
temp+= '<td>' + data[i].category + '</td>';
temp+= '<td>' + data[i].color + '</td></tr>';
$('table tbody').append(temp));
}
It's basically a shorthand. So instead of having to write:
this.props.dispatch(toggleTodo(id));
You would use mapDispatchToProps as shown in your example code, and then elsewhere write:
this.props.onTodoClick(id);
or more likely in this case, you'd have that as the event handler:
<MyComponent onClick={this.props.onTodoClick} />
There's a helpful video by Dan Abramov on this here: https://egghead.io/lessons/javascript-redux-generating-containers-with-connect-from-react-redux-visibletodolist
If you want to add sequence to id in the table which already exist you can use:
CREATE SEQUENCE user_id_seq;
ALTER TABLE user ALTER user_id SET DEFAULT NEXTVAL('user_id_seq');
I'd just like to add to Jon's example. To get a reference to your own assembly, you can use:
Assembly myAssembly = Assembly.GetExecutingAssembly();
System.Reflection
namespace.
If you want to examine an assembly that you have no reference to, you can use either of these:
Assembly assembly = Assembly.ReflectionOnlyLoad(fullAssemblyName);
Assembly assembly = Assembly.ReflectionOnlyLoadFrom(fileName);
If you intend to instantiate your type once you've found it:
Assembly assembly = Assembly.Load(fullAssemblyName);
Assembly assembly = Assembly.LoadFrom(fileName);
See the Assembly class documentation for more information.
Once you have the reference to the Assembly
object, you can use assembly.GetTypes()
like Jon already demonstrated.
It turns out this is actually possible, but not using the genuine Docker CE or EE version.
You can either use Red Hat's fork of docker with the '--add-registry' flag or you can build docker from source yourself with registry/config.go modified to use your own hard-coded default registry namespace/index.
Use a div for your divider. It will always be centered vertically regardless to whether left and right divs are equal in height. You can reuse it anywhere on your site.
.divider{
position:absolute;
left:50%;
top:10%;
bottom:10%;
border-left:1px solid white;
}
Make sure you aren't over specifying the font family, for example
*{font-family: Verdana;}
will remove the halflings font from i elements.
Speaking for C language, I've just found ampirically that following declaration code will be the solution;
typedef struct ListNode
{
int data;
ListNode * prev;
ListNode * next;
} ListNode;
So as a general rule, I give the same name both for both type definition and name of the struct;
typedef struct X
{
// code for additional types here
X* prev; // reference to pointer
X* next; // reference to pointer
} X;
Where following declarations are considered both incomplete by the gcc
compiler when executing following statement. ;
removed->next->prev = removed->prev;
And I get same error for the dereferencing code reported in the error output;
>gcc Main.c LinkedList.c -o Main.exe -w
LinkedList.c: In function 'removeFromList':
LinkedList.c:166:18: error: dereferencing pointer to incomplete type 'struct ListNode'
removed->next->prev = removed->prev;
For both of the header file declarations listed below;
typedef struct
{
int data;
ListNode * prev;
ListNode * next;
} ListNode;
Plus this one;
typedef struct ListNodeType
{
int data;
ListNode * prev;
ListNode * next;
} ListNode;
To get ascii to a number, you would just cast your char value into an integer.
char ascii = 'a'
int value = (int)ascii
Variable value will now have 97 which corresponds to the value of that ascii character
(Use this link for reference) http://www.asciitable.com/index/asciifull.gif
On the console, looking at the topmost right side of the dialog you should see a red button kinda like a buzzer. To stop the spring boot application properly you just ran, go ahead and hit this particular "red" button and your problem is solved. Hope this helps!
It's an old question but I think it is still valid.
Since there is no CONTAINS function, why not declare it in VBA? The code below uses the VBA Instr function, which looks for a substring in a string. It returns 0 when the string is not found.
Public Function CONTAINS(TextString As String, SubString As String) As Integer
CONTAINS = InStr(1, TextString, SubString)
End Function
Apply the color to the li
and set the span
(or other child element) color to whatever color the text should be.
ul
{
list-style-type: square;
}
ul > li
{
color: green;
}
ul > li > span
{
color: black;
}
You can optionally actually use the get
method of a dict
:
x = {i<100: -1, -10<=i<=10: 0, i>100: 1}.get(True, 2)
You don't need the get
method if one of the keys is guaranteed to evaluate to True
:
x = {i<0: -1, i==0: 0, i>0: 1}[True]
At most one of the keys should ideally evaluate to True
. If more than one key evaluates to True
, the results could seem unpredictable.
{
"User":[
{
"FirstUser":{
"name":"John"
},
"Information":"XY",
"SecondUser":{
"name":"Tom"
}
}
]
}
If I create model using previous json Using this link [blog]: http://www.jsoncafe.com to generate Codable structure or Any Format
Model
import Foundation
struct RootClass : Codable {
let user : [Users]?
enum CodingKeys: String, CodingKey {
case user = "User"
}
init(from decoder: Decoder) throws {
let values = try? decoder.container(keyedBy: CodingKeys.self)
user = try? values?.decodeIfPresent([Users].self, forKey: .user)
}
}
struct Users : Codable {
let firstUser : FirstUser?
let information : String?
let secondUser : SecondUser?
enum CodingKeys: String, CodingKey {
case firstUser = "FirstUser"
case information = "Information"
case secondUser = "SecondUser"
}
init(from decoder: Decoder) throws {
let values = try? decoder.container(keyedBy: CodingKeys.self)
firstUser = try? FirstUser(from: decoder)
information = try? values?.decodeIfPresent(String.self, forKey: .information)
secondUser = try? SecondUser(from: decoder)
}
}
struct SecondUser : Codable {
let name : String?
enum CodingKeys: String, CodingKey {
case name = "name"
}
init(from decoder: Decoder) throws {
let values = try? decoder.container(keyedBy: CodingKeys.self)
name = try? values?.decodeIfPresent(String.self, forKey: .name)
}
}
struct FirstUser : Codable {
let name : String?
enum CodingKeys: String, CodingKey {
case name = "name"
}
init(from decoder: Decoder) throws {
let values = try? decoder.container(keyedBy: CodingKeys.self)
name = try? values?.decodeIfPresent(String.self, forKey: .name)
}
}
Parse
do {
let res = try JSONDecoder().decode(RootClass.self, from: data)
print(res?.user?.first?.firstUser?.name ?? "Yours optional value")
} catch {
print(error)
}
Will delete all files/directories below the current one.
find -mindepth 1 -delete
If you want to do the same with another directory whose name you have, you can just name that
find <name-of-directory> -mindepth 1 -delete
If you want to remove not only the sub-directories and files of it, but also the directory itself, omit -mindepth 1
. Do it without the -delete
to get a list of the things that will be removed.
the simplest option I can suggest is using the schedule library.
In your question, you said "I will need to run a function once every hour" the code to do this is very simple:
import schedule
def thing_you_wanna_do():
...
...
return
schedule.every().hour.do(thing_you_wanna_do)
while True:
schedule.run_pending()
you also asked how to do something at a certain time of the day some examples of how to do this are:
import schedule
def thing_you_wanna_do():
...
...
return
schedule.every().day.at("10:30").do(thing_you_wanna_do)
schedule.every().monday.do(thing_you_wanna_do)
schedule.every().wednesday.at("13:15").do(thing_you_wanna_do)
# If you would like some randomness / variation you could also do something like this
schedule.every(1).to(2).hours.do(thing_you_wanna_do)
while True:
schedule.run_pending()
90% of the code used is the example code of the schedule library. Happy scheduling!
1. if it's tab delimited txt file:
LOAD DATA LOCAL INFILE 'D:/MySQL/event.txt' INTO TABLE event
LINES TERMINATED BY '\r\n';
2. otherwise:
LOAD DATA LOCAL INFILE 'D:/MySQL/event.txt' INTO TABLE event
FIELDS TERMINATED BY 'x' (here x could be comma ',', tab '\t', semicolon ';', space ' ')
LINES TERMINATED BY '\r\n';
best answer written by Dmitri Korotkevitch:
Speaking of the installation, SQL Server 2008 allows you to set authentication mode (Windows or SQL Server) during the installation process. You will be forced to choose the strong password for sa user in the case if you choose sql server authentication mode during setup.
If you install SQL Server with Windows Authentication mode and want to change it, you need to do 2 different things:
Go to SQL Server Properties/Security tab and change the mode to SQL Server authentication mode
Go to security/logins, open SA login properties
a. Uncheck "Enforce password policy" and "Enforce password expiration" check box there if you decide to use weak password
b. Assign password to SA user
c. Open "Status" tab and enable login.
I don't need to mention that every action from above would violate security best practices that recommend to use windows authentication mode, have sa login disabled and use strong passwords especially for sa login.
I know the question was about ASP but maybe somebody will find this answer helpful.
If you have a server behind the IIS 7.5 (e.g. Tomcat). In my case I have a server farm with Tomcat server configured. In such case you can change the timeout using the IIS Manager:
or you can change it in the cofig file:
Example:
<webFarm name="${SERVER_NAME}" enabled="true">
<server address="${SERVER_ADDRESS}" enabled="true">
<applicationRequestRouting httpPort="${SERVER_PORT}" />
</server>
<applicationRequestRouting>
<protocol timeout="${TIME}" />
</applicationRequestRouting>
</webFarm>
The ${TIME} is in HH:mm:ss format (so if you want to set it to 90 seconds then put there 00:01:30)
In case of Tomcat (and probably other servlet containers) you have to remember to change the timeout in the %TOMCAT_DIR%\conf\server.xml (just search for connectionTimeout attribute in Connector tag, and remember that it is specified in milliseconds)
For me it was the "Start In" - I copied the values from an older server, and updated the path to the new .exe location, but I forgot to update the "start in" location - if it doesn't exist, you get this error too
Quoting @hans-passant 's comment from above, because it is valuable to debugging this issue:
Convert the error code to hex to get 0x8007010B. The 7 makes it a Windows error. Which makes 010B error code 267. "The directory name is invalid". Sure, that happens.
If you have an instance function (i.e. one that gets passed self) you can use self to get a reference to the class using self.__class__
For example in the code below tornado creates an instance to handle get requests, but we can get hold of the get_handler
class and use it to hold a riak client so we do not need to create one for every request.
import tornado.web
import riak
class get_handler(tornado.web.requestHandler):
riak_client = None
def post(self):
cls = self.__class__
if cls.riak_client is None:
cls.riak_client = riak.RiakClient(pb_port=8087, protocol='pbc')
# Additional code to send response to the request ...
If you have jQuery, use isPlainObject.
if ($.isPlainObject(my_var)) {}
Drop a pidfile somewhere (e.g. /tmp). Then you can check to see if the process is running by checking to see if the PID in the file exists. Don't forget to delete the file when you shut down cleanly, and check for it when you start up.
#/usr/bin/env python
import os
import sys
pid = str(os.getpid())
pidfile = "/tmp/mydaemon.pid"
if os.path.isfile(pidfile):
print "%s already exists, exiting" % pidfile
sys.exit()
file(pidfile, 'w').write(pid)
try:
# Do some actual work here
finally:
os.unlink(pidfile)
Then you can check to see if the process is running by checking to see if the contents of /tmp/mydaemon.pid are an existing process. Monit (mentioned above) can do this for you, or you can write a simple shell script to check it for you using the return code from ps.
ps up `cat /tmp/mydaemon.pid ` >/dev/null && echo "Running" || echo "Not running"
For extra credit, you can use the atexit module to ensure that your program cleans up its pidfile under any circumstances (when killed, exceptions raised, etc.).
you need to add a handler to the form submit event. In the handler you need to check for each text field, select element and password fields if there values are non empty.
$('form').submit(function() {
var res = true;
// here I am checking for textFields, password fields, and any
// drop down you may have in the form
$("input[type='text'],select,input[type='password']",this).each(function() {
if($(this).val().trim() == "") {
res = false;
}
})
return res; // returning false will prevent the form from submitting.
});
It is your setting as the owner of your local repo. Change it like this:
git remote set-head origin some_branch
And origin/HEAD will point to your branch instead of master. This would then apply to your repo only and not for others. By default, it will point to master, unless something else has been configured on the remote repo.
Manual entry for remote set-head provides some good information on this.
Edit: to emphasize: without you telling it to, the only way it would "move" would be a case like renaming the master branch, which I don't think is considered "organic". So, I would say organically it does not move.
you need to add Content-Disposition header, smth like this (although I used mod-python here, but principle should be the same):
request.headers_out['Content-Disposition'] = 'attachment; filename=%s' % myfname
For storing a single row output into a variable from the select into query :
declare v_username varchare(20); SELECT username into v_username FROM users WHERE user_id = '7';
this will store the value of a single record into the variable v_username.
For storing multiple rows output into a variable from the select into query :
you have to use listagg function. listagg concatenate the resultant rows of a coloumn into a single coloumn and also to differentiate them you can use a special symbol. use the query as below SELECT listagg(username || ',' ) within group (order by username) into v_username FROM users;
Not exactly direct answer, but strongly related:
In case the resources are in a different file - for example ResourceDictionary.xaml
You can simply add x:Class
to it:
<ResourceDictionary x:Class="Namespace.NewClassName"
xmlns="http://schemas.microsoft.com/winfx/2006/xaml/presentation"
xmlns:x="http://schemas.microsoft.com/winfx/2006/xaml" >
<ds:MyCollection x:Key="myKey" x:Name="myName" />
</ResourceDictionary>
And then use it in code behind:
var res = new Namespace.NewClassName();
var col = res["myKey"];
Yes, it is the right way.
You could use the image in the resource file just using the path:
<Image Source="..\Media\Image.png" />
You must set the build action of the image file to "Resource".
A space may only be encoded to "+" in the "application/x-www-form-urlencoded" content-type key-value pairs query part of an URL. In my opinion, this is a MAY, not a MUST. In the rest of URLs, it is encoded as %20.
In my opinion, it's better to always encode spaces as %20, not as "+", even in the query part of an URL, because it is the HTML specification (RFC-1866) that specified that space characters should be encoded as "+" in "application/x-www-form-urlencoded" content-type key-value pairs (see paragraph 8.2.1. subparagraph 1.)
This way of encoding form data is also given in later HTML specifications. For example, look for relevant paragraphs about application/x-www-form-urlencoded in HTML 4.01 Specification, and so on.
Here is a sample string in URL where the HTML specification allows encoding spaces as pluses: "http://example.com/over/there?name=foo+bar". So, only after "?", spaces can be replaced by pluses. In other cases, spaces should be encoded to %20. But since it's hard to correctly determine the context, it's the best practice to never encode spaces as "+".
I would recommend to percent-encode all character except "unreserved" defined in RFC-3986, p.2.3
unreserved = ALPHA / DIGIT / "-" / "." / "_" / "~"
The implementation depends on the programming language that you chose.
If your URL contains national characters, first encode them to UTF-8 and then percent-encode the result.
From the docs:
Given one or more existing commits, revert the changes that the related patches introduce ...
myFile
is intepretted as a commit - because git revert
doesn't accept file paths; only commits
To change one file to match a previous commit - use git checkout
git checkout HEAD~2 myFile
You can just run the command
git parent
to find the parent of the branch, if you add the @Joe Chrysler's answer as a git alias. It will simplify the usage.
Open gitconfig file located at "~/.gitconfig"
by using any text editor. ( For linux). And for Windows the ".gitconfig" path is generally located at c:\users\your-user\.gitconfig
vim ~/.gitconfig
Add the following alias command in the file:
[alias]
parent = "!git show-branch | grep '*' | grep -v \"$(git rev-parse --abbrev-ref HEAD)\" | head -n1 | sed 's/.*\\[\\(.*\\)\\].*/\\1/' | sed 's/[\\^~].*//' #"
Save and exit the editor.
Run the command git parent
That's it!
In this context, I suppose it could be interpreted as
do
...
while cmd != 'e'
Other languages have short cuts for ranges of field numbers, but not awk, you'll have to write your code as your fear ;-)
awk -F, 'BEGIN {OFS=","} { print $1, $2, $3, $4 ..... $30, $33}' infile.csv > outfile.csv
There is no direct function in awk to use field names as column specifiers.
I hope this helps.
Normally Python throws NameError
if the variable is not defined:
>>> d[0]
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
NameError: name 'd' is not defined
However, you've managed to stumble upon a name that already exists in Python.
Because dict
is the name of a built-in type in Python you are seeing what appears to be a strange error message, but in reality it is not.
The type of dict
is a type
. All types are objects in Python. Thus you are actually trying to index into the type
object. This is why the error message says that the "'type' object is not subscriptable."
>>> type(dict)
<type 'type'>
>>> dict[0]
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
TypeError: 'type' object is not subscriptable
Note that you can blindly assign to the dict
name, but you really don't want to do that. It's just going to cause you problems later.
>>> dict = {1:'a'}
>>> type(dict)
<class 'dict'>
>>> dict[1]
'a'
The true source of the problem is that you must assign variables prior to trying to use them. If you simply reorder the statements of your question, it will almost certainly work:
d = {1: "walk1.png", 2: "walk2.png", 3: "walk3.png"}
m1 = pygame.image.load(d[1])
m2 = pygame.image.load(d[2])
m3 = pygame.image.load(d[3])
playerxy = (375,130)
window.blit(m1, (playerxy))
The solutions here didn't work for me as I'm styling react components.
What worked though for the sidebar was
.sidebar{
position: sticky;
top: 0;
}
Hope this helps someone.
read.table
wants to return a data.frame
, which must have an element in each column. Therefore R expects each row to have the same number of elements and it doesn't fill in empty spaces by default. Try read.table("/PathTo/file.csv" , fill = TRUE )
to fill in the blanks.
e.g.
read.table( text= "Element1 Element2
Element5 Element6 Element7" , fill = TRUE , header = FALSE )
# V1 V2 V3
#1 Element1 Element2
#2 Element5 Element6 Element7
A note on whether or not to set header = FALSE
... read.table
tries to automatically determine if you have a header row thus:
header
is set toTRUE
if and only if the first row contains one fewer field than the number of columns
pd.wide_to_long
You can add a prefix to your year columns and then feed directly to pd.wide_to_long
. I won't pretend this is efficient, but it may in certain situations be more convenient than pd.melt
, e.g. when your columns already have an appropriate prefix.
df.columns = np.hstack((df.columns[:2], df.columns[2:].map(lambda x: f'Value{x}')))
res = pd.wide_to_long(df, stubnames=['Value'], i='name', j='Date').reset_index()\
.sort_values(['location', 'name'])
print(res)
name Date location Value
0 test Jan-2010 A 12
2 test Feb-2010 A 20
4 test March-2010 A 30
1 foo Jan-2010 B 18
3 foo Feb-2010 B 20
5 foo March-2010 B 25
Here's the obligatory dplyr
answer in case somebody wants to do this with the pipe.
test %>%
select(sort(names(.)))
You can check your g++
by command:
which g++
g++ --version
this will tell you which complier is currently it is pointing.
To switch to g++
4.7 (assuming that you have installed it in your machine),run:
sudo update-alternatives --config gcc
There are 2 choices for the alternative gcc (providing /usr/bin/gcc).
Selection Path Priority Status
------------------------------------------------------------
0 /usr/bin/gcc-4.6 60 auto mode
1 /usr/bin/gcc-4.6 60 manual mode
* 2 /usr/bin/gcc-4.7 40 manual mode
Then select 2
as selection(My machine already pointing to g++
4.7,so the *)
Once you switch the complier then again run g++ --version
to check the switching has happened correctly.
Now compile your program with
g++ -std=c++11 your_file.cpp -o main
Don't use quotes with <<EOF
:
var=$1
sudo tee "/path/to/outfile" > /dev/null <<EOF
Some text that contains my $var
EOF
Variable expansion is the default behavior inside of here-docs. You disable that behavior by quoting the label (with single or double quotes).
This is the shortest version I could find,saving/hiding an extra conversion:
pil_image = PIL.Image.open('image.jpg')
opencvImage = cv2.cvtColor(numpy.array(pil_image), cv2.COLOR_RGB2BGR)
If reading a file from a URL:
import cStringIO
import urllib
file = cStringIO.StringIO(urllib.urlopen(r'http://stackoverflow.com/a_nice_image.jpg').read())
pil_image = PIL.Image.open(file)
opencvImage = cv2.cvtColor(numpy.array(pil_image), cv2.COLOR_RGB2BGR)
The Unhandled 'error' event
is referring not providing a function to the request to pass errors. Without this event the node process ends with the error instead of failing gracefully and providing actual feedback. You can set the event just before the request.write
line to catch any issues:
request.on('error', function(err)
{
console.log(err);
});
More examples below:
https://nodejs.org/api/http.html#http_http_request_options_callback
The layout is extremely inefficient and bloated. You don't need that many LinearLayout
s. In fact you don't need any LinearLayout
at all.
Use only one RelativeLayout
. Like this.
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<ImageButton android:background="@null"
android:id="@+id/back"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/back"
android:padding="10dip"
android:layout_alignParentLeft="true"/>
<ImageButton android:background="@null"
android:id="@+id/forward"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/forward"
android:padding="10dip"
android:layout_toRightOf="@id/back"/>
<ImageButton android:background="@null"
android:id="@+id/special"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="@drawable/barcode"
android:padding="10dip"
android:layout_alignParentRight="true"/>
</RelativeLayout>
Following are few options available to change Heap Size.
-Xms<size> set initial Java heap size
-Xmx<size> set maximum Java heap size
-Xss<size> set java thread stack size
java -Xmx256m TestData.java
As Google tells, for now, don't forget to add also readable on external storage in the manifest :
<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />
Source : http://developer.android.com/training/basics/data-storage/files.html#GetWritePermission
from within the git bash shell type:
>cd /bin
>ls -l
You will then see a long listing of all the unix-like commands available. There are lots of goodies in there.
0 = vbGeneralDate - Default. Returns date: mm/dd/yy and time if specified: hh:mm:ss PM/AM.
1 = vbLongDate - Returns date: weekday, monthname, year
2 = vbShortDate - Returns date: mm/dd/yy
3 = vbLongTime - Returns time: hh:mm:ss PM/AM
4 = vbShortTime - Return time: hh:mm
d=CDate("2010-02-16 13:45")
document.write(FormatDateTime(d) & "<br />")
document.write(FormatDateTime(d,1) & "<br />")
document.write(FormatDateTime(d,2) & "<br />")
document.write(FormatDateTime(d,3) & "<br />")
document.write(FormatDateTime(d,4) & "<br />")
If you want to use another format you will have to create your own function and parse Month, Year, Day, etc and put them together in your preferred format.
Function myDateFormat(myDate)
d = TwoDigits(Day(myDate))
m = TwoDigits(Month(myDate))
y = Year(myDate)
myDateFormat= m & "-" & d & "-" & y
End Function
Function TwoDigits(num)
If(Len(num)=1) Then
TwoDigits="0"&num
Else
TwoDigits=num
End If
End Function
edit: added function to format day and month as 0n
if value is less than 10
.
The other answers cover the 2 most common approaches, Xinclude and XML external entities. Microsoft has a really great writeup on why one should prefer Xinclude, as well as several example implementations. I've quoted the comparison below:
Per http://msdn.microsoft.com/en-us/library/aa302291.aspx
Why XInclude?
The first question one may ask is "Why use XInclude instead of XML external entities?" The answer is that XML external entities have a number of well-known limitations and inconvenient implications, which effectively prevent them from being a general-purpose inclusion facility. Specifically:
- An XML external entity cannot be a full-blown independent XML document—neither standalone XML declaration nor Doctype declaration is allowed. That effectively means an XML external entity itself cannot include other external entities.
- An XML external entity must be well formed XML (not so bad at first glance, but imagine you want to include sample C# code into your XML document).
- Failure to load an external entity is a fatal error; any recovery is strictly forbidden.
- Only the whole external entity may be included, there is no way to include only a portion of a document. -External entities must be declared in a DTD or an internal subset. This opens a Pandora's Box full of implications, such as the fact that the document element must be named in Doctype declaration and that validating readers may require that the full content model of the document be defined in DTD among others.
The deficiencies of using XML external entities as an inclusion mechanism have been known for some time and in fact spawned the submission of the XML Inclusion Proposal to the W3C in 1999 by Microsoft and IBM. The proposal defined a processing model and syntax for a general-purpose XML inclusion facility.
Four years later, version 1.0 of the XML Inclusions, also known as Xinclude, is a Candidate Recommendation, which means that the W3C believes that it has been widely reviewed and satisfies the basic technical problems it set out to solve, but is not yet a full recommendation.
Another good site which provides a variety of example implementations is https://www.xml.com/pub/a/2002/07/31/xinclude.html. Below is a common use case example from their site:
<book xmlns:xi="http://www.w3.org/2001/XInclude">
<title>The Wit and Wisdom of George W. Bush</title>
<xi:include href="malapropisms.xml"/>
<xi:include href="mispronunciations.xml"/>
<xi:include href="madeupwords.xml"/>
</book>