^\d{1,2}[\W_]?po$
\d
defines a number and {1,2}
means 1 or two of the expression before, \W
defines a non word character.
Given it's a raw expression, you should use DB::raw()
to set CURRENT_TIMESTAMP
as a default value for a column:
$table->timestamp('created_at')->default(DB::raw('CURRENT_TIMESTAMP'));
This works flawlessly on every database driver.
New shortcut
As of Laravel 5.1.25 (see PR 10962 and commit 15c487fe) you can use the new useCurrent()
column modifier method to set the CURRENT_TIMESTAMP
as a default value for a column:
$table->timestamp('created_at')->useCurrent();
Back to the question, on MySQL you could also use the ON UPDATE
clause through DB::raw()
:
$table->timestamp('updated_at')->default(DB::raw('CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP'));
MySQL
Starting with MySQL 5.7, 0000-00-00 00:00:00
is no longer considered a valid date. As documented at the Laravel 5.2 upgrade guide, all timestamp columns should receive a valid default value when you insert records into your database. You may use the useCurrent()
column modifier (from Laravel 5.1.25 and above) in your migrations to default the timestamp columns to the current timestamps, or you may make the timestamps nullable()
to allow null values.
PostgreSQL & Laravel 4.x
In Laravel 4.x versions, the PostgreSQL driver was using the default database precision to store timestamp values. When using the CURRENT_TIMESTAMP
function on a column with a default precision, PostgreSQL generates a timestamp with the higher precision available, thus generating a timestamp with a fractional second part - see this SQL fiddle.
This will led Carbon to fail parsing a timestamp since it won't be expecting microseconds being stored. To avoid this unexpected behavior breaking your application you have to explicitly give a zero precision to the CURRENT_TIMESTAMP
function as below:
$table->timestamp('created_at')->default(DB::raw('CURRENT_TIMESTAMP(0)'));
Since Laravel 5.0, timestamp()
columns has been changed to use a default precision of zero which avoids this.
Thanks to @andrewhl for pointing out this issue in the comments.
The JSON.stringify
method supported by many modern browsers (including IE8) can output a beautified JSON string:
JSON.stringify(jsObj, null, "\t"); // stringify with tabs inserted at each level
JSON.stringify(jsObj, null, 4); // stringify with 4 spaces at each level
Demo: http://jsfiddle.net/AndyE/HZPVL/
This method is also included with json2.js, for supporting older browsers.
If you don't need to do it programmatically, Try JSON Lint. Not only will it prettify your JSON, it will validate it at the same time.
As discussed somewhat in the question comments, this is one way you could do it:
<input ... ng-model="$parent.storeDefault" value="{{location.id}}">
The above assumes that each location has a field (e.g., id) that holds a unique value.
Note that $parent.storeDefault is used because ng-repeat creates a child scope, and we want to manipulate the storeDefault parameter on the parent scope.
There is an issue discussed here which talks about using ca files, but it's a bit beyond my understanding and I'm unsure what to do about it.
This isn't too difficult once you know how! For Windows:
Using Chrome go to the root URL NPM is complaining about (so https://raw.githubusercontent.com in your case). Open up dev tools and go to Security-> View Certificate. Check Certification path and make sure your at the top level certificate, if not open that one. Now go to "Details" and export the cert with "Copy to File...".
You need to convert this from DER to PEM. There are several ways to do this, but the easiest way I found was an online tool which should be easy to find with relevant keywords.
Now if you open the key with your favorite text editor you should see
-----BEGIN CERTIFICATE-----
yourkey
-----END CERTIFICATE-----
This is the format you need. You can do this for as many keys as you need, and combine them all into one file. I had to do github and the npm registry keys in my case.
Now just edit your .npmrc to point to the file containing your keys like so
cafile=C:\workspace\rootCerts.crt
I have personally found this to perform significantly better behind our corporate proxy as opposed to the strict-ssl option. YMMV.
add label
to subview
of custom view
, no need of self.view.addSubview(view)
, because viewForHeaderInSection
return the UIView
view.addSubview(label)
Another formula option is to use REPLACE function to replace the first n characters with nothing, e.g. if n = 4
=REPLACE(A1,1,4,"")
All answers here are using gradle but if someone like me ends up here and needs answer for maven:
<build>
<sourceDirectory>src/main/kotlin</sourceDirectory>
<testSourceDirectory>src/test/kotlin</testSourceDirectory>
<plugins>
<plugin>
<groupId>org.jetbrains.kotlin</groupId>
<artifactId>kotlin-maven-plugin</artifactId>
<version>${kotlin.version}</version>
<executions>
<execution>
<id>compile</id>
<phase>compile</phase>
<goals>
<goal>compile</goal>
</goals>
</execution>
<execution>
<id>test-compile</id>
<phase>test-compile</phase>
<goals>
<goal>test-compile</goal>
</goals>
</execution>
</executions>
<configuration>
<jvmTarget>11</jvmTarget>
</configuration>
</plugin>
</plugins>
</build>
The change from jetbrains archetype for kotlin-jvm is the <configuration></configuration>
specifying the jvmTarget. In my case 11
Use the "Edit top 200" option, then click on "Show SQL panel", modify your query with your WHERE clause, and execute the query. You'll be able to edit the results.
If your stream elements implements Comparable
then the solution becomes simpler:
...stream()
.sorted(Comparator.reverseOrder())
Preferences --> EditorEditor --> Inspections --> Android Lint --> uncheck item Using System app permissio
Here I wrote one for dd/mm/yyyy
where separator can be one of -.,/
year range 0000-9999
.
It deals with leap years and is designed for regex flavors, that support lookaheads, capturing groups and backreferences. NOT valid for such as d/m/yyyy
. If needed add further separators to [-.,/]
^(?=\d{2}([-.,\/])\d{2}\1\d{4}$)(?:0[1-9]|1\d|[2][0-8]|29(?!.02.(?!(?!(?:[02468][1-35-79]|[13579][0-13-57-9])00)\d{2}(?:[02468][048]|[13579][26])))|30(?!.02)|31(?=.(?:0[13578]|10|12))).(?:0[1-9]|1[012]).\d{4}$
Test at regex101; as a Java string:
"^(?=\\d{2}([-.,\\/])\\d{2}\\1\\d{4}$)(?:0[1-9]|1\\d|[2][0-8]|29(?!.02.(?!(?!(?:[02468][1-35-79]|[13579][0-13-57-9])00)\\d{2}(?:[02468][048]|[13579][26])))|30(?!.02)|31(?=.(?:0[13578]|10|12))).(?:0[1-9]|1[012]).\\d{4}$"
explained:
(?x) # modifier x: free spacing mode (for comments)
# verify date dd/mm/yyyy; possible separators: -.,/
# valid year range: 0000-9999
^ # start anchor
# precheck xx-xx-xxxx,... add new separators here
(?=\d{2}([-.,\/])\d{2}\1\d{4}$)
(?: # day-check: non caturing group
# days 01-28
0[1-9]|1\d|[2][0-8]|
# february 29d check for leap year: all 4y / 00 years: only each 400
# 0400,0800,1200,1600,2000,...
29
(?!.02. # not if feb: if not ...
(?!
# 00 years: exclude !0 %400 years
(?!(?:[02468][1-35-79]|[13579][0-13-57-9])00)
# 00,04,08,12,...
\d{2}(?:[02468][048]|[13579][26])
)
)|
# d30 negative lookahead: february cannot have 30 days
30(?!.02)|
# d31 positive lookahead: month up to 31 days
31(?=.(?:0[13578]|10|12))
) # eof day-check
# month 01-12
.(?:0[1-9]|1[012])
# year 0000-9999
.\d{4}
$ # end anchor
Also see SO Regex FAQ; Please let me know, if it fails.
You can use reentrant locks with a fairness policy or timeout to avoid thread starvation. You can apply a thread fairness policy. it will help avoid a thread waiting forever to get to your resources.
private final ReentrantLock lock = new ReentrantLock(true);
//the param true turns on the fairness policy.
The "fairness policy" picks the next runnable thread to execute. It is based on priority, time since last run, blah blah
also, Synchronize can block indefinitely if it cant escape the block. Reentrantlock can have timeout set.
Since adjacent string literals are automatically joint into a single string, you can just use the implied line continuation inside parentheses as recommended by PEP 8:
print("Why, hello there wonderful "
"stackoverflow people!")
@Column(name = Columns.COLUMN_NAME, columnDefinition = "NVARCHAR(MAX)")
max
indicates that the maximum storage size is 2^31-1 bytes (2 GB)
here I'm providing solution to setup terraform enviroment variable in windows to beginners.
Open system variables, select the path > edit > new > place the terraform.exe file location like > C:\Programfile\terraform\
and Save it.
In you keyup/down handler you just need to set the scrollTop
property of the div you want to scroll to make it scroll down (or up).
For example:
JSX:
<div ref="foo">{content}</div>
keyup/down handler:
this.refs.foo.getDOMNode().scrollTop += 10
If you do something similar to above, your div will scroll down 10 pixels (assuming the div is set to overflow auto
or scroll
in css, and your content is overflowing of course).
You will need to expand on this to find the offset of the element inside your scrolling div that you want to scroll the div down to, and then modify the scrollTop
to scroll far enough to show the element based on it's height.
Have a look at MDN's definitions of scrollTop, and offsetTop here:
https://developer.mozilla.org/en-US/docs/Web/API/Element/scrollTop
https://developer.mozilla.org/en-US/docs/Web/API/HTMLElement/offsetTop
This code helped find my problem when I had issue with my Entity VAlidation Erros. It told me the exact problem with my Entity Definition. Try following code where you need to cover storeDB.SaveChanges(); in following try catch block.
try
{
if (TryUpdateModel(theEvent))
{
storeDB.SaveChanges();
return RedirectToAction("Index");
}
}
catch (System.Data.Entity.Validation.DbEntityValidationException dbEx)
{
Exception raise = dbEx;
foreach (var validationErrors in dbEx.EntityValidationErrors)
{
foreach (var validationError in validationErrors.ValidationErrors)
{
string message = string.Format("{0}:{1}",
validationErrors.Entry.Entity.ToString(),
validationError.ErrorMessage);
// raise a new exception nesting
// the current instance as InnerException
raise = new InvalidOperationException(message, raise);
}
}
throw raise;
}
Array values = Enum.GetValues(typeof(Bar));
Random random = new Random();
Bar randomBar = (Bar)values.GetValue(random.Next(values.Length));
What about providing a custom N-Factor authentication mechanism?
Before combining available methods, let's assume we can perform the following:
1) Hard-code inside the Java program
2) Store in a .properties file
3) Ask user to type password from command line
4) Ask user to type password from a form
5) Ask user to load a password-file from command line or a form
6) Provide the password through network
7) many alternatives (eg Draw A Secret, Fingerprint, IP-specific, bla bla bla)
1st option: We could make things more complicated for an attacker by using obfuscation, but this is not considered a good countermeasure. A good coder can easily understand how it works if he/she can access the file. We could even export a per-user binary (or just the obfuscation part or key-part), so an attacker must have access to this user-specific file, not another distro. Again, we should find a way to change passwords, eg by recompiling or using reflection to on-the-fly change class behavior.
2nd option: We can store the password in the .properties file in an encrypted format, so it's not directly visible from an attacker (just like jasypt does). If we need a password manager we'll need a master password too which again should be stored somewhere - inside a .class file, the keystore, kernel, another file or even in memory - all have their pros and cons.
But, now users will just edit the .properties file for password change.
3rd option: type the password when running from command line e.g. java -jar /myprogram.jar -p sdflhjkiweHIUHIU8976hyd
.
This doesn't require the password to be stored and will stay in memory. However, history
commands and OS logs, may be your worst enemy here.
To change passwords on-the-fly, you will need to implement some methods (eg listen for console inputs, RMI, sockets, REST bla bla bla), but the password will always stay in memory.
One can even temporarily decrypt it only when required -> then delete the decrypted, but always keep the encrypted password in memory. Unfortunately, the aforementioned method does not increase security against unauthorized in-memory access, because the person who achieves that, will probably have access to the algorithm, salt and any other secrets being used.
4th option: provide the password from a custom form, rather than the command line. This will circumvent the problem of logging exposure.
5th option: provide a file as a password stored previously on a another medium -> then hard delete file. This will again circumvent the problem of logging exposure, plus no typing is required that could be shoulder-surfing stolen. When a change is required, provide another file, then delete again.
6th option: again to avoid shoulder-surfing, one can implement an RMI method call, to provide the password (through an encrypted channel) from another device, eg via a mobile phone. However, you now need to protect your network channel and access to the other device.
I would choose a combination of the above methods to achieve maximum security so one would have to access the .class files, the property file, logs, network channel, shoulder surfing, man in the middle, other files bla bla bla. This can be easily implemented using a XOR operation between all sub_passwords to produce the actual password.
We can't be protected from unauthorized in-memory access though, this can only be achieved by using some access-restricted hardware (eg smartcards, HSMs, SGX), where everything is computed into them, without anyone, even the legitimate owner being able to access decryption keys or algorithms. Again, one can steal this hardware too, there are reported side-channel attacks that may help attackers in key extraction and in some cases you need to trust another party (eg with SGX you trust Intel). Of course, situation may worsen when secure-enclave cloning (de-assembling) will be possible, but I guess this will take some years to be practical.
Also, one may consider a key sharing solution where the full key is split between different servers. However, upon reconstruction, the full key can be stolen. The only way to mitigate the aforementioned issue is by secure multiparty computation.
We should always keep in mind that whatever the input method, we need to ensure we are not vulnerable from network sniffing (MITM attacks) and/or key-loggers.
I am assuming that you are asking how to remove ALL the files in the build folder or the bin folder, Rather than selecting each files separately.
You can use this command:
git rm -r -f /build\*
Make sure that you are in the parent directory of the build directory.
This command will, recursively "delete" all the files which are in the bin/ or build/ folders. By the word delete I mean that git will pretend that those files are "deleted" and those files will not be tracked. The git really marks those files to be in delete mode.
Do make sure that you have your .gitignore ready for upcoming commits.
Documentation : git rm
If you want to redirect the output to a log file to look for errors or something. You can do something like this.
sqlplus -s <<EOF>> LOG_FILE_NAME user/passwd@host/db
#Your SQL code
EOF
The fully RFC 822 compliant regex is inefficient and obscure because of its length. Fortunately, RFC 822 was superseded twice and the current specification for email addresses is RFC 5322. RFC 5322 leads to a regex that can be understood if studied for a few minutes and is efficient enough for actual use.
One RFC 5322 compliant regex can be found at the top of the page at http://emailregex.com/ but uses the IP address pattern that is floating around the internet with a bug that allows 00
for any of the unsigned byte decimal values in a dot-delimited address, which is illegal. The rest of it appears to be consistent with the RFC 5322 grammar and passes several tests using grep -Po
, including cases domain names, IP addresses, bad ones, and account names with and without quotes.
Correcting the 00
bug in the IP pattern, we obtain a working and fairly fast regex. (Scrape the rendered version, not the markdown, for actual code.)
(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(?:(?:(2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9]))\.){3}(?:(2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9])|[a-z0-9-]*[a-z0-9]:(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\])
or:
(?:[a-z0-9!#$%&'*+/=?^_`{|}~-]+(?:\.[a-z0-9!#$%&'*+/=?^_`{|}~-]+)*|"(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21\x23-\x5b\x5d-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])*")@(?:(?:[a-z0-9](?:[a-z0-9-]*[a-z0-9])?\.)+[a-z0-9](?:[a-z0-9-]*[a-z0-9])?|\[(?:(?:(2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9]))\.){3}(?:(2(5[0-5]|[0-4][0-9])|1[0-9][0-9]|[1-9]?[0-9])|[a-z0-9-]*[a-z0-9]:(?:[\x01-\x08\x0b\x0c\x0e-\x1f\x21-\x5a\x53-\x7f]|\\[\x01-\x09\x0b\x0c\x0e-\x7f])+)\])
Here is diagram of finite state machine for above regexp which is more clear than regexp itself
The more sophisticated patterns in Perl and PCRE (regex library used e.g. in PHP) can correctly parse RFC 5322 without a hitch. Python and C# can do that too, but they use a different syntax from those first two. However, if you are forced to use one of the many less powerful pattern-matching languages, then it’s best to use a real parser.
It's also important to understand that validating it per the RFC tells you absolutely nothing about whether that address actually exists at the supplied domain, or whether the person entering the address is its true owner. People sign others up to mailing lists this way all the time. Fixing that requires a fancier kind of validation that involves sending that address a message that includes a confirmation token meant to be entered on the same web page as was the address.
Confirmation tokens are the only way to know you got the address of the person entering it. This is why most mailing lists now use that mechanism to confirm sign-ups. After all, anybody can put down [email protected]
, and that will even parse as legal, but it isn't likely to be the person at the other end.
For PHP, you should not use the pattern given in Validate an E-Mail Address with PHP, the Right Way from which I quote:
There is some danger that common usage and widespread sloppy coding will establish a de facto standard for e-mail addresses that is more restrictive than the recorded formal standard.
That is no better than all the other non-RFC patterns. It isn’t even smart enough to handle even RFC 822, let alone RFC 5322. This one, however, is.
If you want to get fancy and pedantic, implement a complete state engine. A regular expression can only act as a rudimentary filter. The problem with regular expressions is that telling someone that their perfectly valid e-mail address is invalid (a false positive) because your regular expression can't handle it is just rude and impolite from the user's perspective. A state engine for the purpose can both validate and even correct e-mail addresses that would otherwise be considered invalid as it disassembles the e-mail address according to each RFC. This allows for a potentially more pleasing experience, like
The specified e-mail address 'myemail@address,com' is invalid. Did you mean '[email protected]'?
See also Validating Email Addresses, including the comments. Or Comparing E-mail Address Validating Regular Expressions.
Also, the long method - it was a last resort after trying all previous answers:
C:\python27\scripts\pip.exe install [package].whl
This after cd in directory where the wheel is located.
You could specify the width of all but the last table cells and add a table-layout:fixed and a width to the table.
You could set
table tr ul.actions {margin: 0; white-space:nowrap;}
(or set this for the last TD as Sander suggested instead).
This forces the inline-LIs not to break. Unfortunately this does not lead to a new width calculation in the containing UL (and this parent TD), and therefore does not autosize the last TD.
This means: if an inline element has no given width, a TD's width is always computed automatically first (if not specified). Then its inline content with this calculated width gets rendered and the white-space
-property is applied, stretching its content beyond the calculated boundaries.
So I guess it's not possible without having an element within the last TD with a specific width.
Use ProcessBuilder to separate commands and arguments instead of spaces. This should work regardless of shell used:
import java.io.BufferedReader;
import java.io.File;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;
public class Test {
public static void main(final String[] args) throws IOException, InterruptedException {
//Build command
List<String> commands = new ArrayList<String>();
commands.add("/bin/cat");
//Add arguments
commands.add("/home/narek/pk.txt");
System.out.println(commands);
//Run macro on target
ProcessBuilder pb = new ProcessBuilder(commands);
pb.directory(new File("/home/narek"));
pb.redirectErrorStream(true);
Process process = pb.start();
//Read output
StringBuilder out = new StringBuilder();
BufferedReader br = new BufferedReader(new InputStreamReader(process.getInputStream()));
String line = null, previous = null;
while ((line = br.readLine()) != null)
if (!line.equals(previous)) {
previous = line;
out.append(line).append('\n');
System.out.println(line);
}
//Check result
if (process.waitFor() == 0) {
System.out.println("Success!");
System.exit(0);
}
//Abnormal termination: Log command parameters and output and throw ExecutionException
System.err.println(commands);
System.err.println(out.toString());
System.exit(1);
}
}
The single ampersand & is the logical AND operator. The double ampersand && is again a logical AND operator that employs short-circuiting behaviour. Short-circuiting just means the second operand (right hand side) is evaluated only when the result is not fully determined by the first operand (left hand side)
A & B (A and B are evaluated)
A && B (B is only evaluated if A is true)
The indentation is wrong, as the error tells you. As you can see, you have indented the code beginning with the indicated line too little to be in the for
loop, but too much to be at the same level as the for loop. Python sees the lack of indentation as ending the for
loop, then complains you have indented the rest of the code too much. (The def
line I'm betting is just an artifact of how Stack Overflow wants you to format your code.)
Edit: Given your correction, I'm betting you have a mixture of tabs and spaces in the source file, such that it looks to the human eye like the code lines up, but Python considers it not to. As others have suggested, using only spaces is the recommended practice (see PEP 8). If you start Python with python -t
, you will get warnings if there are mixed tabs and spaces in your code, which should help you pinpoint the issue.
@Tom : Instead of using 'now' or 'addWeek' if we provide date in following format, it does not give correct records
$projects = Project::whereBetween('recur_at', array(new DateTime('2015-10-16'), new DateTime('2015-10-23')))
->where('status', '<', 5)
->where('recur_cancelled', '=', 0)
->get();
it gives records having date form 2015-10-16 to less than 2015-10-23. If value of recur_at is 2015-10-23 00:00:00 then only it shows that record else if it is 2015-10-23 12:00:45 then it is not shown.
I think you mean the active state
button:active{
//some styling
}
These are all the possible pseudo states a link can have in CSS:
a:link {color:#FF0000;} /* unvisited link, same as regular 'a' */
a:hover {color:#FF00FF;} /* mouse over link */
a:focus {color:#0000FF;} /* link has focus */
a:active {color:#0000FF;} /* selected link */
a:visited {color:#00FF00;} /* visited link */
See also: http://www.w3.org/TR/selectors/#the-user-action-pseudo-classes-hover-act
try:
SELECT first_name + ISNULL(' '+last_name, '') AS Name FROM dbo.person
This adds the space to the last name, if it is null, the entire space+last name goes to NULL and you only get a first name, otherwise you get a firts+space+last name.
this will work as long as the default setting for concatenation with null strings is set:
SET CONCAT_NULL_YIELDS_NULL ON
this shouldn't be a concern since the OFF
mode is going away in future versions of SQl Server
you need object notation
<section [ngClass]="{'class1':condition1, 'class2': condition2, 'class3':condition3}" >
ref: NgClass
You cannot get back uncommitted changes in general.
Previously staged changes (git add
) should be recoverable from index objects, so if you did, use git fsck --lost-found
to locate the objects related to it. (This writes the objects to the .git/lost-found/
directory; from there you can use git show <filename>
to see the contents of each file.)
If not, the answer here would be: look at your backup. Perhaps your editor/IDE stores temp copies under /tmp or C:\TEMP and things like that.[1]
git reset HEAD@{1}
This will restore to the previous HEAD
[1] vim e.g. optionally stores persistent undo, eclipse IDE stores local history; such features might save your a**
One more solution with resolving by name:
@Resource(name="country")
It uses javax.annotation package, so it's not Spring specific, but Spring supports it.
$ sbt sbtVersion
This prints the sbt version used in your current project, or if it is a multi-module project for each module.
$ sbt 'inspect sbtVersion'
[info] Set current project to jacek (in build file:/Users/jacek/)
[info] Setting: java.lang.String = 0.13.1
[info] Description:
[info] Provides the version of sbt. This setting should be not be modified.
[info] Provided by:
[info] */*:sbtVersion
[info] Defined at:
[info] (sbt.Defaults) Defaults.scala:68
[info] Delegates:
[info] *:sbtVersion
[info] {.}/*:sbtVersion
[info] */*:sbtVersion
[info] Related:
[info] */*:sbtVersion
You may also want to use sbt about
that (copying Mark Harrah's comment):
The about command was added recently to try to succinctly print the most relevant information, including the sbt version.
The problem is in the import
line. You are importing a module, not a class. Assuming your file is named other_file.py
(unlike java, again, there is no such rule as "one class, one file"):
from other_file import findTheRange
if your file is named findTheRange too, following java's convenions, then you should write
from findTheRange import findTheRange
you can also import it just like you did with random
:
import findTheRange
operator = findTheRange.findTheRange()
Some other comments:
a) @Daniel Roseman is right. You do not need classes here at all. Python encourages procedural programming (when it fits, of course)
b) You can build the list directly:
randomList = [random.randint(0, 100) for i in range(5)]
c) You can call methods in the same way you do in java:
largestInList = operator.findLargest(randomList)
smallestInList = operator.findSmallest(randomList)
d) You can use built in function, and the huge python library:
largestInList = max(randomList)
smallestInList = min(randomList)
e) If you still want to use a class, and you don't need self
, you can use @staticmethod
:
class findTheRange():
@staticmethod
def findLargest(_list):
#stuff...
There is even easier way how to work with JSONP using jQuery
$.getJSON("http://example.com/something.json?callback=?", function(result){
//response data are now in the result variable
alert(result);
});
The ?
on the end of the URL tells jQuery that it is a JSONP request instead of JSON. jQuery registers and calls the callback function automatically.
For more detail refer to the jQuery.getJSON documentation.
Considering we have the following post
and post_comment
tables:
The post
has the following records:
| id | title |
|----|-----------|
| 1 | Java |
| 2 | Hibernate |
| 3 | JPA |
and the post_comment
has the following three rows:
| id | review | post_id |
|----|-----------|---------|
| 1 | Good | 1 |
| 2 | Excellent | 1 |
| 3 | Awesome | 2 |
The SQL JOIN clause allows you to associate rows that belong to different tables. For instance, a CROSS JOIN will create a Cartesian Product containing all possible combinations of rows between the two joining tables.
While the CROSS JOIN is useful in certain scenarios, most of the time, you want to join tables based on a specific condition. And, that's where INNER JOIN comes into play.
The SQL INNER JOIN allows us to filter the Cartesian Product of joining two tables based on a condition that is specified via the ON clause.
If you provide an "always true" condition, the INNER JOIN will not filter the joined records, and the result set will contain the Cartesian Product of the two joining tables.
For instance, if we execute the following SQL INNER JOIN query:
SELECT
p.id AS "p.id",
pc.id AS "pc.id"
FROM post p
INNER JOIN post_comment pc ON 1 = 1
We will get all combinations of post
and post_comment
records:
| p.id | pc.id |
|---------|------------|
| 1 | 1 |
| 1 | 2 |
| 1 | 3 |
| 2 | 1 |
| 2 | 2 |
| 2 | 3 |
| 3 | 1 |
| 3 | 2 |
| 3 | 3 |
So, if the ON clause condition is "always true", the INNER JOIN is simply equivalent to a CROSS JOIN query:
SELECT
p.id AS "p.id",
pc.id AS "pc.id"
FROM post p
CROSS JOIN post_comment
WHERE 1 = 1
ORDER BY p.id, pc.id
On the other hand, if the ON clause condition is "always false", then all the joined records are going to be filtered out and the result set will be empty.
So, if we execute the following SQL INNER JOIN query:
SELECT
p.id AS "p.id",
pc.id AS "pc.id"
FROM post p
INNER JOIN post_comment pc ON 1 = 0
ORDER BY p.id, pc.id
We won't get any result back:
| p.id | pc.id |
|---------|------------|
That's because the query above is equivalent to the following CROSS JOIN query:
SELECT
p.id AS "p.id",
pc.id AS "pc.id"
FROM post p
CROSS JOIN post_comment
WHERE 1 = 0
ORDER BY p.id, pc.id
The most common ON clause condition is the one that matches the Foreign Key column in the child table with the Primary Key column in the parent table, as illustrated by the following query:
SELECT
p.id AS "p.id",
pc.post_id AS "pc.post_id",
pc.id AS "pc.id",
p.title AS "p.title",
pc.review AS "pc.review"
FROM post p
INNER JOIN post_comment pc ON pc.post_id = p.id
ORDER BY p.id, pc.id
When executing the above SQL INNER JOIN query, we get the following result set:
| p.id | pc.post_id | pc.id | p.title | pc.review |
|---------|------------|------------|------------|-----------|
| 1 | 1 | 1 | Java | Good |
| 1 | 1 | 2 | Java | Excellent |
| 2 | 2 | 3 | Hibernate | Awesome |
So, only the records that match the ON clause condition are included in the query result set. In our case, the result set contains all the post
along with their post_comment
records. The post
rows that have no associated post_comment
are excluded since they can not satisfy the ON Clause condition.
Again, the above SQL INNER JOIN query is equivalent to the following CROSS JOIN query:
SELECT
p.id AS "p.id",
pc.post_id AS "pc.post_id",
pc.id AS "pc.id",
p.title AS "p.title",
pc.review AS "pc.review"
FROM post p, post_comment pc
WHERE pc.post_id = p.id
The non-struck rows are the ones that satisfy the WHERE clause, and only these records are going to be included in the result set. That's the best way to visualize how the INNER JOIN clause works.
| p.id | pc.post_id | pc.id | p.title | pc.review | |------|------------|-------|-----------|-----------| | 1 | 1 | 1 | Java | Good | | 1 | 1 | 2 | Java | Excellent || 1 | 2 | 3 | Java | Awesome || 2 | 1 | 1 | Hibernate | Good || 2 | 1 | 2 | Hibernate | Excellent || 2 | 2 | 3 | Hibernate | Awesome || 3 | 1 | 1 | JPA | Good || 3 | 1 | 2 | JPA | Excellent || 3 | 2 | 3 | JPA | Awesome |
An INNER JOIN statement can be rewritten as a CROSS JOIN with a WHERE clause matching the same condition you used in the ON clause of the INNER JOIN query.
Not that this only applies to INNER JOIN, not for OUTER JOIN.
If you want to install/upgrade all packages to the latest version and you are running windows you can use this in powershell.exe
:
foreach($package in @("animations","common","compiler","core","forms","http","platform-browser","platform-browser-dynamic","router")) {
npm install @angular/$package@latest -E
}
If you also use the cli
, you can do this:
foreach($package in @('animations','common','compiler','core','forms','http','platform-browser','platform-browser-dynamic','router', 'cli','compiler-cli')){
iex "npm install @angular/$package@latest -E $(If($('cli','compiler-cli').Contains($package)){'-D'})";
}
This will save the packages exact (-E), and the cli packages in devDependencies
(-D)
Convert from any classic base to any base in C#
String number = "100";
int fromBase = 16;
int toBase = 10;
String result = Convert.ToString(Convert.ToInt32(number, fromBase), toBase);
// result == "256"
Supported bases are 2, 8, 10 and 16
Update django-geoposition at least to version 0.2.3 and add this to settings.py:
GEOPOSITION_GOOGLE_MAPS_API_KEY = 'YOUR_API_KEY'
The error you are getting i.e. "unexpected token o" is because json is expected but object is obtained while parsing. That "o" is the first letter of word "object".
Try this:
$(document).ready(function(){
var yourArray = [];
$("span.HOEnZb").find("div").each(function(){
if(($.trim($(this).text()).length>0)){
yourArray.push($(this).text());
}
});
});
Just tell the file
-input to automatically submit the form on any change:
<form action="http://example.com">_x000D_
<input type="file" onchange="form.submit()" />_x000D_
</form>
_x000D_
This solution works like this:
onchange
makes the input element execute the following script, whenever the value
is modifiedform
references the form, that this input element is part ofsubmit()
causes the form to send all data to the URL, as specified in action
Advantages of this solution:
id
s. It makes life easier, if you have several forms in one html page.you should change cr_date(str) to datetime object then you 'll change the date to the specific format:
cr_date = '2013-10-31 18:23:29.000227'
cr_date = datetime.datetime.strptime(cr_date, '%Y-%m-%d %H:%M:%S.%f')
cr_date = cr_date.strftime("%m/%d/%Y")
import sys
sys.stdout = open('stdout.txt', 'w')
This will give you the full name of the month.
select datename(month, S0.OrderDateTime)
If you only want the first three letters you can use this
select convert(char(3), S0.OrderDateTime, 0)
Just execute
sudo npm i --save
That's all
With this, you can perform some code in the get
or set
scope.
private string _myProperty;
public string myProperty
{
get { return _myProperty; }
set { _myProperty = value; }
}
You also can use automatic properties:
public string myProperty
{
get;
set;
}
And .Net Framework will manage for you. It was create because it is a good pratice and make it easy to do.
You also can control the visibility of these scopes, for sample:
public string myProperty
{
get;
private set;
}
public string myProperty2
{
get;
protected set;
}
public string myProperty3
{
get;
}
Now in C# you can initialize the value of a property. For sample:
public int Property { get; set; } = 1;
If also can define it and make it readonly, without a set.
public int Property { get; } = 1;
And finally, you can define an arrow function.
public int Property => GetValue();
If you check out the subprocess section of the Python docs, you'll notice there is an example of how to replace os.system()
with subprocess.Popen()
:
sts = os.system("mycmd" + " myarg")
...does the same thing as...
sts = Popen("mycmd" + " myarg", shell=True).wait()
The "improved" code looks more complicated, but it's better because once you know subprocess.Popen()
, you don't need anything else. subprocess.Popen()
replaces several other tools (os.system()
is just one of those) that were scattered throughout three other Python modules.
If it helps, think of subprocess.Popen()
as a very flexible os.system()
.
I found the most simple approach by changing the default encoding of the whole script to be 'UTF-8':
import sys
reload(sys)
sys.setdefaultencoding('utf8')
any open
, print
or other statement will just use utf8
.
Works at least for Python 2.7.9
.
Thx goes to https://markhneedham.com/blog/2015/05/21/python-unicodeencodeerror-ascii-codec-cant-encode-character-uxfc-in-position-11-ordinal-not-in-range128/ (look at the end).
Use BoxDecoration
with BoxShadow
.
Here is a visual demo manipulating the following options:
The animated gif doesn't do so well with colors. You can try it yourself on a device.
Here is the full code for that demo:
import 'package:flutter/material.dart';
void main() => runApp(MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: Scaffold(
body: ShadowDemo(),
),
);
}
}
class ShadowDemo extends StatefulWidget {
@override
_ShadowDemoState createState() => _ShadowDemoState();
}
class _ShadowDemoState extends State<ShadowDemo> {
var _image = NetworkImage('https://placebear.com/300/300');
var _opacity = 1.0;
var _xOffset = 0.0;
var _yOffset = 0.0;
var _blurRadius = 0.0;
var _spreadRadius = 0.0;
@override
Widget build(BuildContext context) {
return Stack(
children: <Widget>[
Center(
child:
Container(
decoration: BoxDecoration(
color: Color(0xFF0099EE),
boxShadow: [
BoxShadow(
color: Color.fromRGBO(0, 0, 0, _opacity),
offset: Offset(_xOffset, _yOffset),
blurRadius: _blurRadius,
spreadRadius: _spreadRadius,
)
],
),
child: Image(image:_image, width: 100, height: 100,),
),
),
Align(
alignment: Alignment.bottomCenter,
child: Padding(
padding: const EdgeInsets.only(bottom: 80.0),
child: Column(
children: <Widget>[
Spacer(),
Slider(
value: _opacity,
min: 0.0,
max: 1.0,
onChanged: (newValue) =>
{
setState(() => _opacity = newValue)
},
),
Slider(
value: _xOffset,
min: -100,
max: 100,
onChanged: (newValue) =>
{
setState(() => _xOffset = newValue)
},
),
Slider(
value: _yOffset,
min: -100,
max: 100,
onChanged: (newValue) =>
{
setState(() => _yOffset = newValue)
},
),
Slider(
value: _blurRadius,
min: 0,
max: 100,
onChanged: (newValue) =>
{
setState(() => _blurRadius = newValue)
},
),
Slider(
value: _spreadRadius,
min: 0,
max: 100,
onChanged: (newValue) =>
{
setState(() => _spreadRadius = newValue)
},
),
],
),
),
)
],
);
}
}
Just do not include a background color for that div and it will be transparent.
maybe this will help (rotate 90 degree)(this worked for me)
private Bitmap rotateBitmap(Bitmap image){
int width=image.getHeight();
int height=image.getWidth();
Bitmap srcBitmap=Bitmap.createBitmap(width, height, image.getConfig());
for (int y=width-1;y>=0;y--)
for(int x=0;x<height;x++)
srcBitmap.setPixel(width-y-1, x,image.getPixel(x, y));
return srcBitmap;
}
Looks a lot like Oracle, but that doesn't work on SQL Server.
You can, instead, adopt the following syntax...
SELECT
*
INTO
new_table
FROM
old_source(s)
Can't Load URL: The domain of this URL isn't included in the app's domains. To be able to load this URL, add all domains and subdomains of your app to the App Domains field in your app settings.
I had this issue today, I find the Facebook documentation and SDK disrespectful and arogant towards other developers to say the least.
Besides having the "app domains" in two different locations without much information (3 if you add a "web" platform), you also need to go to app products / facebook login / settings and add your redirect URL under Valid OAuth Redirect URIs
The error says NOTHING about the oauth settings.
String can be as large as 2GB.
Source
How about this one? Actually, this code returns 13 characters max, but it shorter than UUID.
import java.nio.ByteBuffer;
import java.util.UUID;
/**
* Generate short UUID (13 characters)
*
* @return short UUID
*/
public static String shortUUID() {
UUID uuid = UUID.randomUUID();
long l = ByteBuffer.wrap(uuid.toString().getBytes()).getLong();
return Long.toString(l, Character.MAX_RADIX);
}
In most project types, your async
"up" and "down" will end at an async void
event handler or returning a Task
to your framework.
However, Console apps do not support this.
You can either just do a Wait
on the returned task:
static void Main()
{
MainAsync().Wait();
// or, if you want to avoid exceptions being wrapped into AggregateException:
// MainAsync().GetAwaiter().GetResult();
}
static async Task MainAsync()
{
...
}
or you can use your own context like the one I wrote:
static void Main()
{
AsyncContext.Run(() => MainAsync());
}
static async Task MainAsync()
{
...
}
More information for async
Console apps is on my blog.
In addition to the above answers here is how you might handle a 500 series response from your api where you receive an error message encoded in json:
function callApi(url) {
return fetch(url)
.then(response => {
if (response.ok) {
return response.json().then(response => ({ response }));
}
return response.json().then(error => ({ error }));
})
;
}
let url = 'http://jsonplaceholder.typicode.com/posts/6';
const { response, error } = callApi(url);
if (response) {
// handle json decoded response
} else {
// handle json decoded 500 series response
}
The error is self-explanatory... doInBackground()
runs on a background thread which, since it is not intended to loop, is not connected to a Looper
.
You most likely don't want to directly instantiate a Handler at all... whatever data your doInBackground()
implementation returns will be passed to onPostExecute()
which runs on the UI thread.
mActivity = ThisActivity.this;
mActivity.runOnUiThread(new Runnable() {
public void run() {
new asyncCreateText().execute();
}
});
ADDED FOLLOWING THE STACKTRACE APPEARING IN QUESTION:
Looks like you're trying to start an AsyncTask
from a GL rendering thread... don't do that cos they won't ever Looper.loop()
either. AsyncTasks are really designed to be run from the UI thread only.
The least disruptive fix would probably be to call Activity.runOnUiThread()
with a Runnable
that kicks off your AsyncTask
.
Can I control the HTTP headers sent by window.open (cross browser)?
No
If not, can I somehow window.open a page that then issues my request with custom headers inside its popped-up window?
I need some cunning hacks...
It might help if you described the problem instead of asking if possible solutions would work.
Views are not currently supported by Entity Framework Core. See https://github.com/aspnet/EntityFramework/issues/827.
That said, you can trick EF into using a view by mapping your entity to the view as if it were a table. This approach comes with limitations. e.g. you can't use migrations, you need to manually specific a key for EF to use, and some queries may not work correctly. To get around this last part, you can write SQL queries by hand
context.Images.FromSql("SELECT * FROM dbo.ImageView")
Use the $.inArray() method from jQuery. You then could do something like this
var sortingArr = [ 'b', 'c', 'b', 'b', 'c', 'd' ];
var newSortedArray = new Array();
for(var i=sortingArr.length; i--;) {
var foundIn = $.inArray(sortingArr[i], itemsArray);
newSortedArray.push(itemsArray[foundIn]);
}
There should be an easier way to do this, but, depending on what you're trying to do, the best route might be to convert to a regular Python datetime object:
datetime64Obj = np.datetime64('2002-07-04T02:55:41-0700')
print datetime64Obj.astype(object).year
# 2002
print datetime64Obj.astype(object).day
# 4
Based on comments below, this seems to only work in Python 2.7.x and Python 3.6+
SELECT CAST(GETDATE() AS DATE)
Returns the current date with the time part removed.
DATETIME
s are not "stored in the following format". They are stored in a binary format.
SELECT CAST(GETDATE() AS BINARY(8))
The display format in the question is independent of storage.
Formatting into a particular display format should be done by your application.
Deleting or corrupting the pom.xml file can cause this error.
/bin/sh
may or may not invoke the same program as /bin/bash
.
sh
supports at least the features required by POSIX (assuming a correct implementation). It may support extensions as well.
bash
, the "Bourne Again Shell", implements the features required for sh plus bash-specific extensions. The full set of extensions is too long to describe here, and it varies with new releases. The differences are documented in the bash manual. Type info bash
and read the "Bash Features" section (section 6 in the current version), or read the current documentation online.
FireFox + FireBug is very good for this purpose. For IE there's a developer toolbar which I've never used and intend to use so I cannot provide much feedback.
i used jQuery's event delegation /bubbling... that worked for me. See below:
$(document).on('click', '#btnSubmit', function () {
alert('hi loo');
})
very good info too: https://learn.jquery.com/events/event-delegation/
Here is another way to do the same.
fadeIn effect
.visible {
visibility: visible;
opacity: 1;
transition: opacity 2s linear;
}
fadeOut effect
.hidden {
visibility: hidden;
opacity: 0;
transition: visibility 0s 2s, opacity 2s linear;
}
UPDATE 1:
I found more up-to-date tutorial CSS3 Transition: fadeIn and fadeOut like effects to hide show elements and Tooltip Example: Show Hide Hint or Help Text using CSS3 Transition here with sample code.
UPDATE 2:
(Added details requested by @big-money)
When showing the element (by switching to the visible class), we want the visibility:visible
to kick in instantly, so it’s ok to transition only the opacity property. And when hiding the element (by switching to the hidden class), we want to delay the visibility:hidden
declaration, so that we can see the fade-out transition first. We’re doing this by declaring a transition on the visibility property, with a 0s duration and a delay. You can see a detailed article here.
I know I am too late to answer but posting this answer to save others time. Hope it helps you!!
It's work for Iphone
<?php
$browser = strpos($_SERVER['HTTP_USER_AGENT'],"iPhone");
if ($browser == true){
$browser = 'iphone';
}
?>
The thing is that you are using the option -t
when running your container.
Could you check if enabling the tty
option (see reference) in your docker-compose.yml file the container keeps running?
version: '2'
services:
ubuntu:
build: .
container_name: ubuntu
volumes:
- ~/sph/laravel52:/www/laravel
ports:
- "80:80"
tty: true
Simple "REPAIR the table" from PHPMYADMIN solved this problem for me.
@jkschneider's answer is right. However there is a better approach.
Write the needed changes in an sql file for each update as described in the link https://riggaroo.co.za/android-sqlite-database-use-onupgrade-correctly/
from_1_to_2.sql
ALTER TABLE books ADD COLUMN book_rating INTEGER;
from_2_to_3.sql
ALTER TABLE books RENAME TO book_information;
from_3_to_4.sql
ALTER TABLE book_information ADD COLUMN calculated_pages_times_rating INTEGER;
UPDATE book_information SET calculated_pages_times_rating = (book_pages * book_rating) ;
These .sql files will be executed in onUpgrade() method according to the version of the database.
DatabaseHelper.java
public class DatabaseHelper extends SQLiteOpenHelper {
private static final int DATABASE_VERSION = 4;
private static final String DATABASE_NAME = "database.db";
private static final String TAG = DatabaseHelper.class.getName();
private static DatabaseHelper mInstance = null;
private final Context context;
private DatabaseHelper(Context context) {
super(context, DATABASE_NAME, null, DATABASE_VERSION);
this.context = context;
}
public static synchronized DatabaseHelper getInstance(Context ctx) {
if (mInstance == null) {
mInstance = new DatabaseHelper(ctx.getApplicationContext());
}
return mInstance;
}
@Override
public void onCreate(SQLiteDatabase db) {
db.execSQL(BookEntry.SQL_CREATE_BOOK_ENTRY_TABLE);
// The rest of your create scripts go here.
}
@Override
public void onUpgrade(SQLiteDatabase db, int oldVersion, int newVersion) {
Log.e(TAG, "Updating table from " + oldVersion + " to " + newVersion);
// You will not need to modify this unless you need to do some android specific things.
// When upgrading the database, all you need to do is add a file to the assets folder and name it:
// from_1_to_2.sql with the version that you are upgrading to as the last version.
try {
for (int i = oldVersion; i < newVersion; ++i) {
String migrationName = String.format("from_%d_to_%d.sql", i, (i + 1));
Log.d(TAG, "Looking for migration file: " + migrationName);
readAndExecuteSQLScript(db, context, migrationName);
}
} catch (Exception exception) {
Log.e(TAG, "Exception running upgrade script:", exception);
}
}
@Override
public void onDowngrade(SQLiteDatabase db, int oldVersion, int newVersion) {
}
private void readAndExecuteSQLScript(SQLiteDatabase db, Context ctx, String fileName) {
if (TextUtils.isEmpty(fileName)) {
Log.d(TAG, "SQL script file name is empty");
return;
}
Log.d(TAG, "Script found. Executing...");
AssetManager assetManager = ctx.getAssets();
BufferedReader reader = null;
try {
InputStream is = assetManager.open(fileName);
InputStreamReader isr = new InputStreamReader(is);
reader = new BufferedReader(isr);
executeSQLScript(db, reader);
} catch (IOException e) {
Log.e(TAG, "IOException:", e);
} finally {
if (reader != null) {
try {
reader.close();
} catch (IOException e) {
Log.e(TAG, "IOException:", e);
}
}
}
}
private void executeSQLScript(SQLiteDatabase db, BufferedReader reader) throws IOException {
String line;
StringBuilder statement = new StringBuilder();
while ((line = reader.readLine()) != null) {
statement.append(line);
statement.append("\n");
if (line.endsWith(";")) {
db.execSQL(statement.toString());
statement = new StringBuilder();
}
}
}
}
An example project is provided in the same link also : https://github.com/riggaroo/AndroidDatabaseUpgrades
Try writting the lambda with the same conditions as the delegate. like this:
List<AnalysisObject> analysisObjects =
analysisObjectRepository.FindAll().Where(
(x =>
(x.ID == packageId)
|| (x.Parent != null && x.Parent.ID == packageId)
|| (x.Parent != null && x.Parent.Parent != null && x.Parent.Parent.ID == packageId)
).ToList();
this may be old, but for those looking for answer you can use this...
public void stopHandler() {
handler.removeMessages(0);
}
cheers
Well /etc/crontab
just an ascii file so the simplest is to just
echo "*/15 * * * * root date" >> /etc/crontab
which will add a job which will email you every 15 mins. Adjust to taste, and test via grep
or other means whether the line was already added to make your script idempotent.
On Ubuntu et al, you can also drop files in /etc/cron.*
which is easier to do and test for---plus you don't mess with (system) config files such as /etc/crontab
.
I know this is old but by far the easier solution is to just use
var temp = new Date("2010-08-17T12:09:36");
Not exactly what the OP was asking for, but a simple way to disable all axes lines, ticks and labels is to simply call:
plt.axis('off')
Just to add on Jukka K. Korpela answer above, font awesome already defined a css selector "fa". You can simply do <i class="fa"></i>
. The catch here is, fa defines the font-style:normal, if you need italic, you can override like <i class="fa" style="font-style:italic"></i>
You can use sprintf
in combination with std::string.c_str()
.
c_str()
returns a const char*
and works with sprintf
:
string a = "test";
string b = "text.txt";
string c = "text1.txt";
char* x = new char[a.length() + b.length() + c.length() + 32];
sprintf(x, "%s %s > %s", a.c_str(), b.c_str(), c.c_str() );
string str = x;
delete[] x;
or you can use a pre-allocated char
array if you know the size:
string a = "test";
string b = "text.txt";
string c = "text1.txt";
char x[256];
sprintf(x, "%s %s > %s", a.c_str(), b.c_str(), c.c_str() );
You can do like this! Very easy to parse JSON code :P
package org.sqkb.service.common.bean
import java.text.SimpleDateFormat
import org.json4s
import org.json4s.JValue
import org.json4s.jackson.JsonMethods._
//import org.sqkb.service.common.kit.{IsvCode}
import scala.util.Try
/**
*
*/
case class Order(log: String) {
implicit lazy val formats = org.json4s.DefaultFormats
lazy val json: json4s.JValue = parse(log)
lazy val create_time: String = (json \ "create_time").extractOrElse("1970-01-01 00:00:00")
lazy val site_id: String = (json \ "site_id").extractOrElse("")
lazy val alipay_total_price: Double = (json \ "alipay_total_price").extractOpt[String].filter(_.nonEmpty).getOrElse("0").toDouble
lazy val gmv: Double = alipay_total_price
lazy val pub_share_pre_fee: Double = (json \ "pub_share_pre_fee").extractOpt[String].filter(_.nonEmpty).getOrElse("0").toDouble
lazy val profit: Double = pub_share_pre_fee
lazy val trade_id: String = (json \ "trade_id").extractOrElse("")
lazy val unid: Long = Try((json \ "unid").extractOpt[String].filter(_.nonEmpty).get.toLong).getOrElse(0L)
lazy val cate_id1: Int = (json \ "cate_id").extractOrElse(0)
lazy val cate_id2: Int = (json \ "subcate_id").extractOrElse(0)
lazy val cate_id3: Int = (json \ "cate_id3").extractOrElse(0)
lazy val cate_id4: Int = (json \ "cate_id4").extractOrElse(0)
lazy val coupon_id: Long = (json \ "coupon_id").extractOrElse(0)
lazy val platform: Option[String] = Order.siteMap.get(site_id)
def time_fmt(fmt: String = "yyyy-MM-dd HH:mm:ss"): String = {
val dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss")
val date = dateFormat.parse(this.create_time)
new SimpleDateFormat(fmt).format(date)
}
}
I found this link useful.
Here is the paragraph highlighting some of the pros/cons of each approach.
The most commonly seen design is to imitate the many Boolean-like flags that Oracle's data dictionary views use, selecting 'Y' for true and 'N' for false. However, to interact correctly with host environments, such as JDBC, OCCI, and other programming environments, it's better to select 0 for false and 1 for true so it can work correctly with the getBoolean and setBoolean functions.
Basically they advocate method number 2, for efficiency's sake, using
getBoolean()
etc.) with a check constraintTheir example:
create table tbool (bool char check (bool in (0,1)); insert into tbool values(0); insert into tbool values(1);`
php7 :
sudo a2enmod proxy_fcgi setenvif
sudo a2enconf php7.0-fpm
sudo service apache2 restart
Based on this comment from the OP, "I found the problem. apparentlyworksheet.Cells[y + 1, x + 1].HorizontalAlignment", I believe the real explanation is that all the cells start off sharing the same Style object. So if you change that style object, it changes all the cells that use it. But if you just change the cell's alignment property directly, only that cell is affected.
Just using
HttpContext.Current.GetOwinContext()
did the trick in my case.
As mentioned in other comments using
hibernate.temp.use_jdbc_metadata_defaults = false
...will fix the annoying message, but can lead to many other surprising problems. Better solution is just to disable contextual LOB creation with this:
hibernate.jdbc.lob.non_contextual_creation = true
This will cause Hibernate (in my case, its 5.3.10.Final) to skip probing the JDBC driver and just output following message:
HHH000421: Disabling contextual LOB creation as hibernate.jdbc.lob.non_contextual_creation is true
So far it looks like this setting doesn't cause any problems.
try below code hope use full for you:-
CityAsyncTask cst = new CityAsyncTask(HomeScreenUserLocation.this,
latitude, longitude);
cst.execute();
String lo = null;
try {
lo = cst.get().toString();
} catch (InterruptedException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (ExecutionException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
and AsyncTask
public class CityAsyncTask extends AsyncTask<String, String, String> {
Activity act;
double latitude;
double longitude;
public CityAsyncTask(Activity act, double latitude, double longitude) {
// TODO Auto-generated constructor stub
this.act = act;
this.latitude = latitude;
this.longitude = longitude;
}
@Override
protected String doInBackground(String... params) {
String result = "";
Geocoder geocoder = new Geocoder(act, Locale.getDefault());
try {
List<Address> addresses = geocoder.getFromLocation(latitude,
longitude, 1);
Log.e("Addresses", "-->" + addresses);
result = addresses.get(0).toString();
} catch (IOException e) {
e.printStackTrace();
}
return result;
}
@Override
protected void onPostExecute(String result) {
// TODO Auto-generated method stub
super.onPostExecute(result);
}
}
Try this
select * from (
select ROW_NUMBER() over (order by [salary] desc) as sno,emp_name,
[salary] from [dbo].[Emp]
) t
where t.sno =10
with t as
select top (1) * from
(select top (2) emp_name,salary from [Emp] e
order by salary desc) t
order by salary asc
When you compare update_date >= '2013-05-03'
postgres casts values to the same type to compare values. So your '2013-05-03' was casted to '2013-05-03 00:00:00'.
So for update_date = '2013-05-03 14:45:00' your expression will be that:
'2013-05-03 14:45:00' >= '2013-05-03 00:00:00' AND '2013-05-03 14:45:00' <= '2013-05-03 00:00:00'
This is always false
To solve this problem cast update_date to date
:
select * from table where update_date::date >= '2013-05-03' AND update_date::date <= '2013-05-03' -> Will return result
Here's a jsfiddle with a function call: https://jsfiddle.net/8282emwn/
var marker = new L.Marker([46.947, 7.4448]).on('click', markerOnClick).addTo(map);
function markerOnClick(e)
{
alert("hi. you clicked the marker at " + e.latlng);
}
You said you didn't want to use a translucent Activity, but that seems to be the best way to do this:
Theme.Translucent.NoTitleBar
.setContentView()
.onCreate()
, start your Service with startService()
.finish()
once you've started the Service.In other words, your Activity doesn't have to be visible; it can simply make sure your Service is running and then exit, which sounds like what you want.
I would highly recommend showing at least a Toast notification indicating to the user that you are launching the Service, or that it is already running. It is very bad user experience to have a launcher icon that appears to do nothing when you press it.
Goto IntelliJ -> Preferences -> Plugin
Search for maven, you will see 1. Maven Integration 2. Maven Integration Extension.
Select the Maven Integration option and restart your Intellij
First cast your Edit text like this:
TextView tekst = (TextView) findViewById(R.id.editText1);
tekst.setText(text);
And after that close the DB not befor this line...
myDataBaseHelper.close();
I tried this code and it's working for me .
$html = file_get_contents('www.google.com');
$myVar = htmlspecialchars($html, ENT_QUOTES);
echo($myVar);
If you need the functionality if a index for a column exists (here at first place in sequence) as a database function you can use/adopt this code. If you want to check if an index exists at all regardless of the position in a multi-column-index, then just delete the part "AND SEQ_IN_INDEX = 1".
DELIMITER $$
CREATE FUNCTION `fct_check_if_index_for_column_exists_at_first_place`(
`IN_SCHEMA` VARCHAR(255),
`IN_TABLE` VARCHAR(255),
`IN_COLUMN` VARCHAR(255)
)
RETURNS tinyint(4)
LANGUAGE SQL
DETERMINISTIC
CONTAINS SQL
SQL SECURITY DEFINER
COMMENT 'Check if index exists at first place in sequence for a given column in a given table in a given schema. Returns -1 if schema does not exist. Returns -2 if table does not exist. Returns -3 if column does not exist. If index exists in first place it returns 1, otherwise 0.'
BEGIN
-- Check if index exists at first place in sequence for a given column in a given table in a given schema.
-- Returns -1 if schema does not exist.
-- Returns -2 if table does not exist.
-- Returns -3 if column does not exist.
-- If the index exists in first place it returns 1, otherwise 0.
-- Example call: SELECT fct_check_if_index_for_column_exists_at_first_place('schema_name', 'table_name', 'index_name');
-- check if schema exists
SELECT
COUNT(*) INTO @COUNT_EXISTS
FROM
INFORMATION_SCHEMA.SCHEMATA
WHERE
SCHEMA_NAME = IN_SCHEMA
;
IF @COUNT_EXISTS = 0 THEN
RETURN -1;
END IF;
-- check if table exists
SELECT
COUNT(*) INTO @COUNT_EXISTS
FROM
INFORMATION_SCHEMA.TABLES
WHERE
TABLE_SCHEMA = IN_SCHEMA
AND TABLE_NAME = IN_TABLE
;
IF @COUNT_EXISTS = 0 THEN
RETURN -2;
END IF;
-- check if column exists
SELECT
COUNT(*) INTO @COUNT_EXISTS
FROM
INFORMATION_SCHEMA.COLUMNS
WHERE
TABLE_SCHEMA = IN_SCHEMA
AND TABLE_NAME = IN_TABLE
AND COLUMN_NAME = IN_COLUMN
;
IF @COUNT_EXISTS = 0 THEN
RETURN -3;
END IF;
-- check if index exists at first place in sequence
SELECT
COUNT(*) INTO @COUNT_EXISTS
FROM
information_schema.statistics
WHERE
TABLE_SCHEMA = IN_SCHEMA
AND TABLE_NAME = IN_TABLE AND COLUMN_NAME = IN_COLUMN
AND SEQ_IN_INDEX = 1;
IF @COUNT_EXISTS > 0 THEN
RETURN 1;
ELSE
RETURN 0;
END IF;
END$$
DELIMITER ;
If you are using Java 8, a shorter version for Jersey2 than the answer provided by Aleksandr.
SSLContext sslContext = null;
try {
sslContext = SSLContext.getInstance("SSL");
// Create a new X509TrustManager
sslContext.init(null, getTrustManager(), null);
} catch (NoSuchAlgorithmException | KeyManagementException e) {
throw e;
}
final Client client = ClientBuilder.newBuilder().hostnameVerifier((s, session) -> true)
.sslContext(sslContext).build();
return client;
private TrustManager[] getTrustManager() {
return new TrustManager[] {
new X509TrustManager() {
@Override
public X509Certificate[] getAcceptedIssuers() {
return null;
}
@Override
public void checkServerTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
}
@Override
public void checkClientTrusted(X509Certificate[] chain, String authType)
throws CertificateException {
}
}
};
}
Try this..
<html>
<body>
<head>
<script type="text/javascript">
function splitString()
{
var myDimen=document.getElementById("dimen").value;
var splitDimen = myDimen.split("*");
document.getElementById("myImage").width=splitDimen[0];
document.getElementById("myImage").height=splitDimen[1];
}
</script>
</head>
<h2>Norwegian Mountain Trip</h2>
<img border="0" id="myImage" src="..." alt="Pulpit rock" width="304" height="228" /><br>
<input type="text" id="dimen" name="dimension" />
<input type="submit" value="Submit" Onclick ="splitString()"/>
</body>
</html>
In the text box give the dimension as ur wish, in the format 50*60. Click submit. You will get the resized image. Give your image path in place of dots in the image tag.
No, unlike in a lot of other languages, XSLT variables cannot change their values after they are created. You can however, avoid extraneous code with a technique like this:
<xsl:stylesheet version="1.0" xmlns:xsl="http://www.w3.org/1999/XSL/Transform">
<xsl:output method="xml" indent="yes" omit-xml-declaration="yes"/>
<xsl:variable name="mapping">
<item key="1" v1="A" v2="B" />
<item key="2" v1="X" v2="Y" />
</xsl:variable>
<xsl:variable name="mappingNode"
select="document('')//xsl:variable[@name = 'mapping']" />
<xsl:template match="....">
<xsl:variable name="testVariable" select="'1'" />
<xsl:variable name="values" select="$mappingNode/item[@key = $testVariable]" />
<xsl:variable name="variable1" select="$values/@v1" />
<xsl:variable name="variable2" select="$values/@v2" />
</xsl:template>
</xsl:stylesheet>
In fact, once you've got the values
variable, you may not even need separate variable1
and variable2
variables. You could just use $values/@v1
and $values/@v2
instead.
I'd like to post some important information about undefined
, which beginners might not know.
Look at the following code:
/*
* Consider there is no code above.
* The browser runs these lines only.
*/
// var a;
// --- commented out to point that we've forgotten to declare `a` variable
if ( a === undefined ) {
alert('Not defined');
} else {
alert('Defined: ' + a);
}
alert('Doing important job below');
If you run this code, where variable a
HAS NEVER BEEN DECLARED using var
,
you will get an ERROR EXCEPTION and surprisingly see no alerts at all.
Instead of 'Doing important job below', your script will TERMINATE UNEXPECTEDLY, throwing unhandled exception on the very first line.
Here is the only bulletproof way to check for undefined
using typeof
keyword, which was designed just for such purpose:
/*
* Correct and safe way of checking for `undefined`:
*/
if ( typeof a === 'undefined' ) {
alert(
'The variable is not declared in this scope, \n' +
'or you are pointing to unexisting property, \n' +
'or no value has been set yet to the variable, \n' +
'or the value set was `undefined`. \n' +
'(two last cases are equivalent, don\'t worry if it blows out your mind.'
);
}
/*
* Use `typeof` for checking things like that
*/
This method works in all possible cases.
The last argument to use it is that undefined
can be potentially overwritten in earlier versions of Javascript:
/* @ Trollface @ */
undefined = 2;
/* Happy debuging! */
Hope I was clear enough.
Another library to consider is MySqlConnector, https://mysqlconnector.net/. Mysql.Data is under a GPL license, whereas MySqlConnector is MIT.
tl;dr: use OSX's native process launcher and manager, launchd
.
To do so, make a launchctl
daemon. You'll have full control over all aspects of the script. You can run once or keep alive as a daemon. In most cases, this is the way to go.
.plist
file according to the instructions in the Apple Dev docs here or more detail below.~/Library/LaunchAgents
launchctl load [filename.plist]
)For more on launchd
, the wikipedia article is quite good and describes the system and its advantages over other older systems.
Here's the specific plist file to run a script at login.
Updated 2017/09/25 for OSX El Capitan and newer (credit to José Messias Jr):
<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE plist PUBLIC "-//Apple Computer//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
<plist version="1.0">
<dict>
<key>Label</key>
<string>com.user.loginscript</string>
<key>ProgramArguments</key>
<array><string>/path/to/executable/script.sh</string></array>
<key>RunAtLoad</key>
<true/>
</dict>
</plist>
Replace the <string>
after the Program key with your desired command (note that any script referenced by that command must be executable: chmod a+x /path/to/executable/script.sh
to ensure it is for all users).
Save as ~/Library/LaunchAgents/com.user.loginscript.plist
Run launchctl load ~/Library/LaunchAgents/com.user.loginscript.plist
and log out/in to test (or to test directly, run launchctl start com.user.loginscript
)
Tail /var/log/system.log
for error messages.
The key is that this is a User-specific launchd entry, so it will be run on login for the given user. System-specific launch daemons (placed in /Library/LaunchDaemons
) are run on boot.
If you want a script to run on login for all users, I believe LoginHook is your only option, and that's probably the reason it exists.
add these dependecies to your .pom file:
<dependency>
<groupId>org.hsqldb</groupId>
<artifactId>hsqldb</artifactId>
<version>2.5.0</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.healthmarketscience.jackcess</groupId>
<artifactId>jackcess-encrypt</artifactId>
<version>3.0.0</version>
</dependency>
<dependency>
<groupId>net.sf.ucanaccess</groupId>
<artifactId>ucanaccess</artifactId>
<version>5.0.0</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.9</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.2</version>
</dependency>
and add to your code to call a driver:
Connection conn = DriverManager.getConnection("jdbc:ucanaccess://{file_location}/{accessdb_file_name.mdb};memory=false");
Is there any truth to the claim that functional programming eliminates the need for OOP design patterns?
Functional programming is not the same as object-oriented programming. Object-oriented design patterns don't apply to functional programming. Instead, you have functional programming design patterns.
For functional programming, you won't read the OO design pattern books; you'll read other books on FP design patterns.
language agnostic
Not totally. Only language-agnostic with respect to OO languages. The design patterns don't apply to procedural languages at all. They barely make sense in a relational database design context. They don't apply when designing a spreadsheet.
a typical OOP design pattern and its functional equivalent?
The above shouldn't exist. That's like asking for a piece of procedural code rewritten as OO code. Ummm... If I translate the original Fortran (or C) into Java, I haven't done anything more than translate it. If I totally rewrite it into an OO paradigm, it will no longer look anything like the original Fortran or C -- it will be unrecognizable.
There's no simple mapping from OO design to functional design. They're very different ways of looking at the problem.
Functional programming (like all styles of programming) has design patterns. Relational databases have design patterns, OO has design patterns, and procedural programming has design patterns. Everything has design patterns, even the architecture of buildings.
Design patterns -- as a concept -- are a timeless way of building, irrespective of technology or problem domain. However, specific design patterns apply to specific problem domains and technologies.
Everyone who thinks about what they're doing will uncover design patterns.
Using Base64 string in JSON will be very heavy. The parser has to do a lot of heavy lifting. Currently, Fresco only supports base supports Base64. Better you put something on Amazon Cloud or Firebase Cloud. And get an image as a URL. So that you can use Picasso or Glide for caching.
Unfortunately, no. If you were running the server in default config, go get your backups (you have backups, right?) - generally, a database doesn't keep previous versions of your data, or a revision of changes: only the current state.
(Alternately, if you have deleted the data through a custom frontend, it is quite possible that the frontend doesn't actually issue a DELETE: many tables have a is_deleted
field or similar, and this is simply toggled by the frontend. Note that this is a "soft delete" implemented in the frontend app - the data is not actually deleted in such cases; if you actually issued a DELETE
, TRUNCATE
or a similar SQL command, this is not applicable.)
Using sudo is not recommended. It may give you permission issue later. While the above works, I am not a fan of changing folders owned by root to be writable for users, although it may only be an issue with multiple users. To work around that, you could use a group, with 'npm users' but that is also more administrative overhead. See here for the options to deal with permissions from the documentation: https://docs.npmjs.com/getting-started/fixing-npm-permissions
I would go for option 2:
To minimize the chance of permissions errors, you can configure npm to use a different directory. In this example, it will be a hidden directory on your home folder.
Make a directory for global installations:
mkdir ~/.npm-global
Configure npm to use the new directory path:
npm config set prefix '~/.npm-global'
Open or create a ~/.profile file and add this line:
export PATH=~/.npm-global/bin:$PATH
Back on the command line, update your system variables:
source ~/.profile
Test: Download a package globally without using sudo.
npm install -g jshint
If still show permission error run (mac os):
sudo chown -R $USER ~/.npm-global
This works with the default ubuntu install of:
sudo apt-get install nodejs npm
I recommend nvm
if you want more flexibility in managing versions:
https://github.com/creationix/nvm
On MacOS use brew, it should work without sudo
out of the box if you're on a recent npm
version.
Enjoy :)
You can use
$_FILES['filename']['error'];
If any type of error occurs then it returns 'error' else 1,2,3,4 or 1 if done
1 : if file size is over limit .... You can find other options by googling
DECLARE @id INT
DECLARE @filename NVARCHAR(100)
DECLARE @getid CURSOR
SET @getid = CURSOR FOR
SELECT top 3 id,
filename
FROM table
OPEN @getid
WHILE 1=1
BEGIN
FETCH NEXT
FROM @getid INTO @id, @filename
IF @@FETCH_STATUS < 0 BREAK
print @id
END
CLOSE @getid
DEALLOCATE @getid
Specify the LANG
and LC_ALL
environment variables using -e
when running your command:
docker run -e LANG=C.UTF-8 -e LC_ALL=C.UTF-8 -it --rm <yourimage> <yourcommand>
It's not necessary to modify the Dockerfile.
see sp_who it gives you more details than just seeing the number of connections
in your case i would do something like this
DECLARE @temp TABLE(spid int , ecid int, status varchar(50),
loginname varchar(50),
hostname varchar(50),
blk varchar(50), dbname varchar(50), cmd varchar(50), request_id int)
INSERT INTO @temp
EXEC sp_who
SELECT COUNT(*) FROM @temp WHERE dbname = 'DB NAME'
You may use the following extension method:
public static class CharExtensions
{
public static int CharToInt(this char c)
{
if (c < '0' || c > '9')
throw new ArgumentException("The character should be a number", "c");
return c - '0';
}
}
Note this was done on Excel for Mac 2011 but should be same for Windows
Macro:
Sub numberformats()
Dim rng As Range
Set rng = Range("A24:A35")
For Each c In rng
Debug.Print c.NumberFormat
Next c
End Sub
Result:
General General
Number 0
Currency $#,##0.00;[Red]$#,##0.00
Accounting _($* #,##0.00_);_($* (#,##0.00);_($* "-"??_);_(@_)
Date m/d/yy
Time [$-F400]h:mm:ss am/pm
Percentage 0.00%
Fraction # ?/?
Scientific 0.00E+00
Text @
Special ;;
Custom #,##0_);[Red](#,##0)
(I just picked a random entry for custom)
I am using jquery or vw to keep the ratio
jquery
function setSize() {
var $h = $('.cell').width();
$('.your-img-class').height($h);
}
$(setSize);
$( window ).resize(setSize);
vw
.cell{
width:30vw;
height:30vw;
}
.cell img{
width:100%;
height:100%;
}
void foo<TOne, TTwo>()
where TOne : BaseOne
where TTwo : BaseTwo
More info here:
http://msdn.microsoft.com/en-us/library/d5x73970.aspx
How often do you need to refresh the view? I have a similar case where the new data comes once a month; then I have to load it, and during the loading processes I have to create new tables. At that moment I alter my view to consider the changes. I used as base the information in this other question:
Create View Dynamically & synonyms
In there, it is proposed to do it 2 ways:
You should be using @RequestParam
instead of @ModelAttribute
, e.g.
@RequestMapping("/{someID}")
public @ResponseBody int getAttr(@PathVariable(value="someID") String id,
@RequestParam String someAttr) {
}
You can even omit @RequestParam
altogether if you choose, and Spring will assume that's what it is:
@RequestMapping("/{someID}")
public @ResponseBody int getAttr(@PathVariable(value="someID") String id,
String someAttr) {
}
Just to add another flavor from the Reuben response, I use it like this to add or remove this rule according to a condition:
RelativeLayout.LayoutParams layoutParams =
(RelativeLayout.LayoutParams) holder.txtGuestName.getLayoutParams();
if (SOMETHING_THAT_WOULD_LIKE_YOU_TO_CHECK) {
// if true center text:
layoutParams.addRule(RelativeLayout.CENTER_IN_PARENT);
holder.txtGuestName.setLayoutParams(layoutParams);
} else {
// if false remove center:
layoutParams.addRule(RelativeLayout.CENTER_IN_PARENT, 0);
holder.txtGuestName.setLayoutParams(layoutParams);
}
Adding external Jar is not smart in case you want to change the project location in filesystem.
The best way is to add the jar to build path so your project will compile if exported:
Create a folder called lib in your project folder.
copy to this folder all the jar files you need.
Refresh your project in eclipse.
Select all the jar files, then right click on one of them and select Build Path -> Add to Build Path
I enclose my example code with <pre class="brush: java"></pre>
tags and use SyntaxHighlighter for published javadocs. It doesn't hurt IDE and makes published code examples beautiful.
Checkout your laravel/framework version on your composer.json file,
If it's either "^6.0" or higher than "^5.9",
you have to use php artisan ui:auth
instead of php artisan make:auth
.
Before using that you have to install new dependencies by calling
composer require laravel/ui --dev
in the current directory.
The conventional syntax is d[key] = value
, but if your keyboard is missing the square bracket keys you could also do:
d.__setitem__(key, value)
In fact, defining __getitem__
and __setitem__
methods is how you can make your own class support the square bracket syntax. See https://python.developpez.com/cours/DiveIntoPython/php/endiveintopython/object_oriented_framework/special_class_methods.php
I had a similar issue. Rather than run the search through the dom every time though the loop for the select control I saved the jquery select element in a variable and did this:
function isValueInSelect($select, data_value){
return $($select).children('option').map(function(index, opt){
return opt.value;
}).get().includes(data_value);
}
I know you asked to Rebase, but I'd Cherry-Pick the commits I wanted to move from Branch2 to Branch1 instead. That way, I wouldn't need to care about when which branch was created from master, and I'd have more control over the merging.
a -- b -- c <-- Master
\ \
\ d -- e -- f -- g <-- Branch1 (Cherry-Pick f & g)
\
f -- g <-- Branch2
you can use preload="none" in the attribute of video tag so the video will be displayed only when user clicks on play button.
<video preload="none">
_x000D_
In addition to all the options listed by other answers, you can use git reset
with the Git object (hash, branch, HEAD~x
, tag, ...) of interest and the path of your file:
git reset <hash> /path/to/file
In your example:
git reset 27cf8e8 my_file.txt
What this does is that it will revert my_file.txt
to its version at the commit 27cf8e8
in the index while leaving it untouched (so in its current version) in the working directory.
From there, things are very easy:
git diff --cached my_file.txt
git restore --staged file.txt
(or, prior to Git v2.23, git reset file.txt
) if you decide that you don't like itgit commit -m "Restore version of file.txt from 27cf8e8"
and git restore file.txt
(or, prior to Git v2.23, git checkout -- file.txt
)git add -p file.txt
(then git commit
and git restore file.txt
).Lastly, you can even interactively pick and choose which hunk(s) to reset in the very first step if you run:
git reset -p 27cf8e8 my_file.txt
So git reset
with a path gives you lots of flexibility to retrieve a specific version of a file to compare with its currently checked-out version and, if you choose to do so, to revert fully or only for some hunks to that version.
Edit: I just realized that I am not answering your question since what you wanted wasn't a diff or an easy way to retrieve part or all of the old version but simply to cat
that version.
Of course, you can still do that after resetting the file with:
git show :file.txt
to output to standard output or
git show :file.txt > file_at_27cf8e8.txt
But if this was all you wanted, running git show
directly with git show 27cf8e8:file.txt
as others suggested is of course much more direct.
I am going to leave this answer though because running git show
directly allows you to get that old version instantly, but if you want to do something with it, it isn't nearly as convenient to do so from there as it is if you reset that version in the index.
Try this:
SELECT tab2.column_name
FROM [DB1.mdf].[dbo].[table_name_1] tab1 INNER JOIN [DB2.mdf].[dbo].[table_name_2] tab2
ON tab1.col_name = tab2.col_name
As per my understanding data structure is any data residing in memory of any electronic system that can be efficiently managed. Many times it is a game of memory or faster accessibility of data. In terms of memory again, there are tradeoffs done with the management of data based on cost to the company of that end product. Efficiently managed tells us how best the data can be accessed based on the primary requirement of the end product. This is a very high level explanation but data structures is a vast subjects. Most of the interviewers dive into data structures that they can afford to discuss in the interviews depending on the time they have, which are linked lists and related subjects.
Now, these data types can be divided into primitive, abstract, composite, based on the way they are logically constructed and accessed.
I hope this helps you dive in.
You can use LINQ for this
var list = new List<int>();
var sum = list.Sum();
and for a List of strings like Roy Dictus said you have to convert
list.Sum(str => Convert.ToInt32(str));
Ensure you don't use incremting integers for session IDs. Much better to use a GUID, or some other long randomly generated character string.
Position Independent Code means that the generated machine code is not dependent on being located at a specific address in order to work.
E.g. jumps would be generated as relative rather than absolute.
Pseudo-assembly:
PIC: This would work whether the code was at address 100 or 1000
100: COMPARE REG1, REG2
101: JUMP_IF_EQUAL CURRENT+10
...
111: NOP
Non-PIC: This will only work if the code is at address 100
100: COMPARE REG1, REG2
101: JUMP_IF_EQUAL 111
...
111: NOP
EDIT: In response to comment.
If your code is compiled with -fPIC, it's suitable for inclusion in a library - the library must be able to be relocated from its preferred location in memory to another address, there could be another already loaded library at the address your library prefers.
The patch.exe utility from the Git installation works on Windows 10.
Install Git for Windows then use the "C:\Program Files\Git\usr\bin\patch.exe"
command to apply a patch.
If any error message like a Hunk #1 FAILED at 1 (different line endings).
had been got on the output during applying a patch, try to add the -l
(that is a shortcut for the --ignore-whitespace
) or the --binary
switches to the command line.
uploadProfile(e) {
let file = e.target.files[0];
let reader = new FileReader();
reader.onloadend = function() {
console.log('RESULT', reader.result)
}
reader.readAsDataURL(file);
}
You could use
Click TextFX ? Click TextFX Tools ? Click Sort lines case insensitive (at column) Duplicates and blank lines have been removed and the data has been sorted alphabetically.
as indicated above. However, the way I did it because I need to replace the duplicates by blank lines and not just remove the lines, once sorted alphabetically:
REPLACE:
((^.*$)(\n))(?=\k<1>)
by
$3
This will convert:
Shorts
Shorts
Shorts
Shorts
Shorts
Shorts Two Pack
Shorts Two Pack
Signature Braces
Signature Braces
Signature Cotton Trousers
Signature Cotton Trousers
Signature Cotton Trousers
Signature Cotton Trousers
Signature Cotton Trousers
Signature Cotton Trousers
Signature Cotton Trousers
Signature Cotton Trousers
Signature Cotton Trousers
Signature Cotton Trousers
Signature Cotton Trousers
to:
Shorts
Shorts Two Pack
Signature Braces
Signature Cotton Trousers
That's how I did it because I specifically needed those lines.
import pandas as pd
lastmonth = int(pd.to_datetime("today").strftime("%Y%m"))-1
print(lastmonth)
202101
I have used
tabindex="{{isEditedParaOrder?-1:0}}"
[style.pointer-events]="isEditedParaOrder ?'none':'auto'"
in my anchor tag so that they can not move to anchor tag by using tab to use "enter" key and also pointer itself we are setting to 'none' based on property 'isEditedParaO rder' whi
I couldn't get the accepted answer to work the way I wanted it to (see Farrukh's comment).
I came up with a slightly different solution which also feels more native because it selects the item on mouse button down and then you're able to react to it when the mouse button gets released:
XAML:
<ListView Name="MyListView" ItemsSource={Binding MyItems}>
<ListView.ItemContainerStyle>
<Style TargetType="ListViewItem">
<EventSetter Event="PreviewMouseLeftButtonDown" Handler="ListViewItem_PreviewMouseLeftButtonDown" />
<EventSetter Event="PreviewMouseLeftButtonUp" Handler="ListViewItem_PreviewMouseLeftButtonUp" />
</Style>
</ListView.ItemContainerStyle>
Code behind:
private void ListViewItem_PreviewMouseLeftButtonDown(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
MyListView.SelectedItems.Clear();
ListViewItem item = sender as ListViewItem;
if (item != null)
{
item.IsSelected = true;
MyListView.SelectedItem = item;
}
}
private void ListViewItem_PreviewMouseLeftButtonUp(object sender, System.Windows.Input.MouseButtonEventArgs e)
{
ListViewItem item = sender as ListViewItem;
if (item != null && item.IsSelected)
{
// do stuff
}
}
I use this function to convert string to tuple
import ast
def parse_tuple(string):
try:
s = ast.literal_eval(str(string))
if type(s) == tuple:
return s
return
except:
return
Usage
parse_tuple('("A","B","C",)') # Result: ('A', 'B', 'C')
In your case, you do
value = parse_tuple("('%s',)" % a)
func removeDublicate (ab: [Int]) -> [Int] {
var answer1:[Int] = []
for i in ab {
if !answer1.contains(i) {
answer1.append(i)
}}
return answer1
}
Usage:
let f = removeDublicate(ab: [1,2,2])
print(f)
as per the Chart js documentation page tick configuration section. you can format the value of each tick using the callback function. for example I wanted to change locale of displayed dates to be always German. in the ticks parts of the axis options
ticks: {
callback: function(value) {
return new Date(value).toLocaleDateString('de-DE', {month:'short', year:'numeric'});
},
},
There are multiple false assumptions you're making here - First, function belong to a class and not to an instance, meaning the actual function involved is the same for any two instances of a class. Second, default parameters are evaluated at compile time and are constant (as in, a constant object reference - if the parameter is a mutable object you can change it). Thus you cannot access self
in a default parameter and will never be able to.
The answers seems a bit over complicated. I hope I didn't misunderstand the question.
If you simply want to open a fancy box from a click to an "A" tag. Just set your html to
<a id="my_fancybox" href="#contentdiv">click me</a>
The contents of your box will be inside of a div with id "contentdiv" and in your javascript you can initialize fancybox like this:
$('#my_fancybox').fancybox({
'autoScale': true,
'transitionIn': 'elastic',
'transitionOut': 'elastic',
'speedIn': 500,
'speedOut': 300,
'autoDimensions': true,
'centerOnScroll': true,
});
This will show a fancybox containing "contentdiv" when your anchor tag is clicked.
It really depends :) One of the handy linux core utils (info coreutils
) is xargs
. If you are using awk
you probably have a more involved use-case in mind - your question is not very detailled.
printf "1 2\n3 4" | awk '{ print $2 }' | xargs touch
Will execute touch 2 4
. Here touch
could be replaced by your program. More info at info xargs
and man xargs
(really, read these).
I believe you would like to replace touch
with your program.
Breakdown of beforementioned script:
printf "1 2\n3 4"
# Output:
1 2
3 4
# The pipe (|) makes the output of the left command the input of
# the right command (simplified)
printf "1 2\n3 4" | awk '{ print $2 }'
# Output (of the awk command):
2
4
# xargs will execute a command with arguments. The arguments
# are made up taking the input to xargs (in this case the output
# of the awk command, which is "2 4".
printf "1 2\n3 4" | awk '{ print $2 }' | xargs touch
# No output, but executes: `touch 2 4` which will create (or update
# timestamp if the files already exist) files with the name "2" and "4"
Update In the original answer, I used echo
instead of printf
. However, printf
is the better and more portable alternative as was pointed out by a comment (where great links with discussions can be found).
From remote repo:
svn log -v -r 42 --stop-on-copy --non-interactive --no-auth-cache --username USERNAME --password PASSWORD http://repourl/projectname/
Generally, you cannot send a POST request using sendRedirect() method. You can use RequestDispatcher to forward() requests with parameters within the same web application, same context.
RequestDispatcher dispatcher = servletContext().getRequestDispatcher("test.jsp");
dispatcher.forward(request, response);
The HTTP spec states that all redirects must be in the form of a GET (or HEAD). You can consider encrypting your query string parameters if security is an issue. Another way is you can POST to the target by having a hidden form with method POST and submitting it with javascript when the page is loaded.
Before the scanf put fflush(stdin);
to clear buffer.
This happened to me when I started to work with a colleque's project.
He was using jdk 12.0.2 .
If you are suspicious jdk difference might be the case (Your IDE complains about SDK, JDK etc.):
get-aduser -Server "servername" -Identity %username% -Properties *
get-aduser -Server "testdomain.test.net" -Identity testuser -Properties *
These work when you have the username. Also less to type than using the -filter
property.
EDIT: Formatting.
PHP does not support overloading for now. Hope this will be implemented in the other versions like other programming languages.
Checkout this library, This will allow you to use PHP Overloading in terms of closures. https://github.com/Sahil-Gulati/Overloading
Read the message:
Only one
<configSections>
element allowed per config file and if present must be the first child of the root<configuration>
element.
Move the configSections element to the top - just above where system.data is currently.
In VueJS you can loop through an array like this : const array1 = ['a', 'b', 'c'];
Array.from(array1).forEach(element =>
console.log(element)
);
in my case I want to loop through files and add their types to another array:
Array.from(files).forEach((file) => {
if(this.mediaTypes.image.includes(file.type)) {
this.media.images.push(file)
console.log(this.media.images)
}
}
If you can use The Boost Library, there is the Boost.Range that provides the reverse
range adapter by including:
#include <boost/range/adaptor/reversed.hpp>
Then, in combination with a C++11's range-for
loop, you can just write the following:
for (auto& elem: boost::adaptors::reverse(my_vector)) {
// ...
}
Since this code is briefer than the one using the iterator pair, it may be more readable and less prone to errors as there are fewer details to pay attention to.
you also use preg_replace_callback
function . and this function is identical to its sibling preg_replace
except for it can take a callback function which gives you more control on how you manipulate your output.
$str = "this is a string";
echo preg_replace_callback(
'/\s+/',
function ($matches) {
return "";
},
$str
);
Official(?) instructions: http://peak.telecommunity.com/DevCenter/EasyInstall#uninstalling-packages
If you have replaced a package with another version, then you can just delete the package(s) you don't need by deleting the PackageName-versioninfo.egg file or directory (found in the installation directory).
If you want to delete the currently installed version of a package (or all versions of a package), you should first run:
easy_install -mxN PackageName
This will ensure that Python doesn't continue to search for a package you're planning to remove. After you've done this, you can safely delete the .egg files or directories, along with any scripts you wish to remove.
Way later but still worth mentioning is that you can also use variables to output values in the SET clause of an UPDATE or in the fields of a SELECT;
DECLARE @val1 int;
DECLARE @val2 int;
UPDATE [dbo].[PortalCounters_TEST]
SET @val1 = NextNum, @val2 = NextNum = NextNum + 1
WHERE [Condition] = 'unique value'
SELECT @val1, @val2
In the example above @val1 has the before value and @val2 has the after value although I suspect any changes from a trigger would not be in val2 so you'd have to go with the output table in that case. For anything but the simplest case, I think the output table will be more readable in your code as well.
One place this is very helpful is if you want to turn a column into a comma-separated list;
DECLARE @list varchar(max) = '';
DECLARE @comma varchar(2) = '';
SELECT @list = @list + @comma + County, @comma = ', ' FROM County
print @list
In the app/web.config
file set the following configuration:
<configuration>
<appSettings>
<add key="NameForTheKey" value="ValueForThisKey" />
...
...
</appSettings>
...
...
</configuration>
then you can access this in your code by putting in this line:
string myVar = System.Configuration.ConfigurationManager.AppSettings["NameForTheKey"];
*Note that this work fine for .net4.5.x
and .net4.6.x
; but do not work for .net core
.
Best regards:
Rafael
That's a great example. When ¤t
is parsed into a text node it is converted to ¤t
. When parsed into an attribute value, it is parsed as ¤t
.
If you want ¤t
in a text node, you should write &current
in your markup.
The gory details are in the HTML5 parsing spec - Named Character Reference State
You could use apache common library's StringUtils to do this.
import org.apache.commons.lang3.StringUtils;
...
String s = "test string (67)";
s = StringUtils.substringBetween(s, "(", ")");
....
var rowpos = $('#table tr:last').position();
$('#container').scrollTop(rowpos.top);
should do the trick!
Setup IIS on the network server and change the path to http://server/path/to/file.txt
EDIT: Make sure you enable directory browsing in IIS
Relying on column order is generally a bad idea in SQL. SQL is based on Relational theory where order is never guaranteed - by design. You should treat all your columns and rows as having no order and then change your queries to provide the correct results:
For Columns:
For Rows:
Hope this helps...
From tuple to list to tuple :
a = ('2',)
b = 'b'
l = list(a)
l.append(b)
tuple(l)
Or with a longer list of items to append
a = ('2',)
items = ['o', 'k', 'd', 'o']
l = list(a)
for x in items:
l.append(x)
print tuple(l)
gives you
>>>
('2', 'o', 'k', 'd', 'o')
The point here is: List is a mutable sequence type. So you can change a given list by adding or removing elements. Tuple is an immutable sequence type. You can't change a tuple. So you have to create a new one.
If you got a html page like this:
<body onbeforecopy = "return false" ondragstart = "return false" onselectstart = "return false" oncontextmenu = "return false" onselect = "document.selection.empty()" oncopy = "document.selection.empty()">
There a simple way to disable all events:
document.write(document.body.innerHTML)
You got the html content and lost other things.
Here a full makefile example:
makefile
TARGET = prog
$(TARGET): main.o lib.a
gcc $^ -o $@
main.o: main.c
gcc -c $< -o $@
lib.a: lib1.o lib2.o
ar rcs $@ $^
lib1.o: lib1.c lib1.h
gcc -c -o $@ $<
lib2.o: lib2.c lib2.h
gcc -c -o $@ $<
clean:
rm -f *.o *.a $(TARGET)
explaining the makefile:
target: prerequisites
- the rule head$@
- means the target$^
- means all prerequisites$<
- means just the first prerequisitear
- a Linux tool to create, modify, and extract from archives see the man pages for further information. The options in this case mean:
r
- replace files existing inside the archivec
- create a archive if not already existents
- create an object-file index into the archiveTo conclude: The static library under Linux is nothing more than a archive of object files.
main.c using the lib
#include <stdio.h>
#include "lib.h"
int main ( void )
{
fun1(10);
fun2(10);
return 0;
}
lib.h the libs main header
#ifndef LIB_H_INCLUDED
#define LIB_H_INCLUDED
#include "lib1.h"
#include "lib2.h"
#endif
lib1.c first lib source
#include "lib1.h"
#include <stdio.h>
void fun1 ( int x )
{
printf("%i\n",x);
}
lib1.h the corresponding header
#ifndef LIB1_H_INCLUDED
#define LIB1_H_INCLUDED
#ifdef __cplusplus
extern “C” {
#endif
void fun1 ( int x );
#ifdef __cplusplus
}
#endif
#endif /* LIB1_H_INCLUDED */
lib2.c second lib source
#include "lib2.h"
#include <stdio.h>
void fun2 ( int x )
{
printf("%i\n",2*x);
}
lib2.h the corresponding header
#ifndef LIB2_H_INCLUDED
#define LIB2_H_INCLUDED
#ifdef __cplusplus
extern “C” {
#endif
void fun2 ( int x );
#ifdef __cplusplus
}
#endif
#endif /* LIB2_H_INCLUDED */
You can add the following in your .bashrc
if [ "$TERM" = xterm ]; then TERM=xterm-256color; fi
From the PHP manual:
This is only called on reading/writing inaccessible properties. Your property however is public, which means it is accessible. Changing the access modifier to protected solves the issue.
If you want to show user a dialogue with all browser list, so he can choose preferred, here is sample code:
private static final String HTTPS = "https://";
private static final String HTTP = "http://";
public static void openBrowser(final Context context, String url) {
if (!url.startsWith(HTTP) && !url.startsWith(HTTPS)) {
url = HTTP + url;
}
Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url));
context.startActivity(Intent.createChooser(intent, "Choose browser"));// Choose browser is arbitrary :)
}
As @Alex McMillan mentioned, use state to dictate what should be rendered in the dom.
In the example below I have an input field and I want to add a second one when the user clicks the button, the onClick event handler calls handleAddSecondInput( ) which changes inputLinkClicked to true. I am using a ternary operator to check for the truthy state, which renders the second input field
class HealthConditions extends React.Component {
constructor(props) {
super(props);
this.state = {
inputLinkClicked: false
}
}
handleAddSecondInput() {
this.setState({
inputLinkClicked: true
})
}
render() {
return(
<main id="wrapper" className="" data-reset-cookie-tab>
<div id="content" role="main">
<div className="inner-block">
<H1Heading title="Tell us about any disabilities, illnesses or ongoing conditions"/>
<InputField label="Name of condition"
InputType="text"
InputId="id-condition"
InputName="condition"
/>
{
this.state.inputLinkClicked?
<InputField label=""
InputType="text"
InputId="id-condition2"
InputName="condition2"
/>
:
<div></div>
}
<button
type="button"
className="make-button-link"
data-add-button=""
href="#"
onClick={this.handleAddSecondInput}
>
Add a condition
</button>
<FormButton buttonLabel="Next"
handleSubmit={this.handleSubmit}
linkto={
this.state.illnessOrDisability === 'true' ?
"/404"
:
"/add-your-details"
}
/>
<BackLink backLink="/add-your-details" />
</div>
</div>
</main>
);
}
}
You can simply do a replace in your string like
Str.Replace(@"\\",@"\");
Here's an example using FileReader
:
function readSingleFile(e) {
var file = e.target.files[0];
if (!file) {
return;
}
var reader = new FileReader();
reader.onload = function(e) {
var contents = e.target.result;
displayContents(contents);
};
reader.readAsText(file);
}
function displayContents(contents) {
var element = document.getElementById('file-content');
element.textContent = contents;
}
document.getElementById('file-input')
.addEventListener('change', readSingleFile, false);
_x000D_
<input type="file" id="file-input" />
<h3>Contents of the file:</h3>
<pre id="file-content"></pre>
_x000D_
http://dev.w3.org/2006/webapi/FileAPI/
None of the answers so far explains how to download the various variants of that font so that you can serve them from your own website (WWW server).
While this might seem like a minor issue from the technical perspective, it is a big issue from the legal perspective, at least if you intend to present your pages to any EU citizen (or even, if you do that by accident). This is even true for companies which reside in the US (or any country outside the EU).
If anybody is interested why this is, I'll update this answer and give some more details here, but at the moment, I don't want to waste too much space off-topic.
Having said this:
I've downloaded all versions (regular, outlined, rounded, sharp, two-tone) of that font following two very easy steps (it was @Aj334's answer to his own question which put me on the right track) (example: "outlined" variant):
Get the CSS from the Google CDN by directly letting your browser fetch the CSS URL, i.e. copy the following URL into your browser's location bar:
https://fonts.googleapis.com/css?family=Material+Icons+Outlined
This will return a page which looks like this (at least in Firefox 70.0.1 at the time of writing this):
/* fallback */
@font-face {
font-family: 'Material Icons Outlined';
font-style: normal;
font-weight: 400;
src: url(https://fonts.gstatic.com/s/materialiconsoutlined/v14/gok-H7zzDkdnRel8-DQ6KAXJ69wP1tGnf4ZGhUce.woff2) format('woff2');
}
.material-icons-outlined {
font-family: 'Material Icons Outlined';
font-weight: normal;
font-style: normal;
font-size: 24px;
line-height: 1;
letter-spacing: normal;
text-transform: none;
display: inline-block;
white-space: nowrap;
word-wrap: normal;
direction: ltr;
-moz-font-feature-settings: 'liga';
-moz-osx-font-smoothing: grayscale;
}
Find the line starting with src:
in the above code, and let your browser fetch the URL contained in that line, i.e. copy the following URL into your browser's location bar:
https://fonts.gstatic.com/s/materialiconsoutlined/v14/gok-H7zzDkdnRel8-DQ6KAXJ69wP1tGnf4ZGhUce.woff2
Now the browser will download that .woff2
file and offer to save it locally (at least, Firefox did).
Two final remarks:
Of course, you can download the other variants of that font using the same method. In the first step, just replace the character sequence Outlined
in the URL by the character sequences Round
(yes, really, although here it's called "Rounded" in the left navigation menu), Sharp
or Two+Tone
, respectively. The result page will look nearly the same each time, but the URL in the src:
line of course is different for each variant.
Finally, in step 1, you even can use that URL:
https://fonts.googleapis.com/css?family=Material+Icons|Material+Icons+Outlined|Material+Icons+Two+Tone|Material+Icons+Round|Material+Icons+Sharp
This will return the CSS for all variants in one page, which then contains five src:
lines, each one with another URL designating where the respective font is located.
Not all attributes of an object are meant to be directly set from outside the class. Having writers for all your instance variables is generally a sign of weak encapsulation and a warning that you're introducing too much coupling between your classes.
As a practical example: I wrote a design program where you put items inside containers. The item had attr_reader :container
, but it didn't make sense to offer a writer, since the only time the item's container should change is when it's placed in a new one, which also requires positioning information.
try this:-
select to_char(to_date('01/10/2017','dd/mm/yyyy'),'fmMonth fmDD,YYYY') from dual;
select to_char(sysdate,'fmMonth fmDD,YYYY') from dual;
Function marr(arr1 As Variant, arr2 As Variant) As Variant
Dim item As Variant
For Each item In arr1
i = i + 1
Next item
For Each item In arr2
i = i + 1
Next item
ReDim MergeData(0 To i)
i = 1
For Each item In arr1
MergeData(i) = item
i = i + 1
Next item
For Each item In arr2
MergeData(i) = item
i = i + 1
Next item
marr = MergeData
End Function
Basically an index is a map of all your keys that is sorted in order. With a list in order, then instead of checking every key, it can do something like this:
1: Go to middle of list - is higher or lower than what I'm looking for?
2: If higher, go to halfway point between middle and bottom, if lower, middle and top
3: Is higher or lower? Jump to middle point again, etc.
Using that logic, you can find an element in a sorted list in about 7 steps, instead of checking every item.
Obviously there are complexities, but that gives you the basic idea.
You can do this with PyObjC, with a jailbroken phone of course. But if you want to get it into the App Store, they will not allow it because it "interprets code." However, you may be able to use Shed Skin, although I'm not aware of anyone doing this. I can't think of any good reason to do this though, as you lose dynamic typing, and might as well use ObjC.
Implements means that it takes on the designated behavior that the interface specifies. Consider the following interface:
public interface ISpeak
{
public String talk();
}
public class Dog implements ISpeak
{
public String talk()
{
return "bark!";
}
}
public class Cat implements ISpeak
{
public String talk()
{
return "meow!";
}
}
Both the Cat
and Dog
class implement the ISpeak
interface.
What's great about interfaces is that we can now refer to instances of this class through the ISpeak
interface. Consider the following example:
Dog dog = new Dog();
Cat cat = new Cat();
List<ISpeak> animalsThatTalk = new ArrayList<ISpeak>();
animalsThatTalk.add(dog);
animalsThatTalk.add(cat);
for (ISpeak ispeak : animalsThatTalk)
{
System.out.println(ispeak.talk());
}
The output for this loop would be:
bark!
meow!
Interface provide a means to interact with classes in a generic way based upon the things they do without exposing what the implementing classes are.
One of the most common interfaces used in Java, for example, is Comparable
. If your object implements this interface, you can write an implementation that consumers can use to sort your objects.
For example:
public class Person implements Comparable<Person>
{
private String firstName;
private String lastName;
// Getters/Setters
public int compareTo(Person p)
{
return this.lastName.compareTo(p.getLastName());
}
}
Now consider this code:
// Some code in other class
List<Person> people = getPeopleList();
Collections.sort(people);
What this code did was provide a natural ordering to the Person
class. Because we implemented the Comparable
interface, we were able to leverage the Collections.sort()
method to sort our List
of Person
objects by its natural ordering, in this case, by last name.
I would make use of capture groups in regex:
$ string="hello-world"
$ prefix="hell"
$ suffix="ld"
$ set +H # Disables history substitution, can be omitted in scripts.
$ perl -pe "s/${prefix}((?:(?!(${suffix})).)*)${suffix}/\1/" <<< $string
o-wor
$ string1=$string$string
$ perl -pe "s/${prefix}((?:(?!(${suffix})).)*)${suffix}/\1/g" <<< $string1
o-woro-wor
((?:(?!(${suffix})).)*)
makes sure that the content of ${suffix}
will be excluded from the capture group. In terms of example, it's the string equivalent to [^A-Z]*
. Otherwise you will get:
$ perl -pe "s/${prefix}(.*)${suffix}/\1/g" <<< $string1
o-worldhello-wor
VBA subs are no macros. A VBA sub can be a macro, but it is not a must.
The term "macro" is only used for recorded user actions. from these actions a code is generated and stored in a sub. This code is simple and do not provide powerful structures like loops, for example Do .. until, for .. next, while.. do, and others.
The more elegant way is, to design and write your own VBA code without using the macro features!
VBA is a object based and event oriented language. Subs, or bette call it "sub routines", are started by dedicated events. The event can be the pressing of a button or the opening of a workbook and many many other very specific events.
If you focus to VB6 and not to VBA, then you can state, that there is always a main-window or main form. This form is started if you start the compiled executable "xxxx.exe".
In VBA you have nothing like this, but you have a XLSM file wich is started by Excel. You can attach some code to the Workbook_Open event. This event is generated, if you open your desired excel file which is called a workbook. Inside the workbook you have worksheets.
It is useful to get more familiar with the so called object model of excel. The workbook has several events and methods. Also the worksheet has several events and methods.
In the object based model you have objects, that have events and methods. methods are action you can do with a object. events are things that can happen to an object. An objects can contain another objects, and so on. You can create new objects, like sheets or charts.
And one more ... this also cleans internal commas mixed with whitespace:
From , , , ,one,,, , ,two three, , , ,,four, , , , ,
to one,two three, four
text.replaceAll("^(,|\\s)*|(,|\\s)*$", "").replaceAll("(\\,\\s*)+", ",");
Following Markus's answer, in newer versions of JS (ES6 I think) you can create a 'struct' factory more simply using Arrow Functions and Rest Parameter like so:
const Struct = (...keys) => ((...v) => keys.reduce((o, k, i) => {o[k] = v[i]; return o} , {}))
const Item = Struct('id', 'speaker', 'country')
var myItems = [
Item(1, 'john', 'au'),
Item(2, 'mary', 'us')
];
console.log(myItems);
console.log(myItems[0].id);
console.log(myItems[0].speaker);
console.log(myItems[0].country);
The result of running this is:
[ { id: 1, speaker: 'john', country: 'au' },
{ id: 2, speaker: 'mary', country: 'us' } ]
1
john
au
You can make it look similar to Python's namedtuple:
const NamedStruct = (name, ...keys) => ((...v) => keys.reduce((o, k, i) => {o[k] = v[i]; return o} , {_name: name}))
const Item = NamedStruct('Item', 'id', 'speaker', 'country')
var myItems = [
Item(1, 'john', 'au'),
Item(2, 'mary', 'us')
];
console.log(myItems);
console.log(myItems[0].id);
console.log(myItems[0].speaker);
console.log(myItems[0].country);
And the results:
[ { _name: 'Item', id: 1, speaker: 'john', country: 'au' },
{ _name: 'Item', id: 2, speaker: 'mary', country: 'us' } ]
1
john
au
You must ensure the URL contains embed rather watch as the /embed
endpoint allows outside requests, whereas the /watch
endpoint does not.
<iframe width="420" height="315" src="https://www.youtube.com/embed/A6XUVjK9W4o" frameborder="0" allowfullscreen></iframe>
Here's a solution very similar to your original pseudo-code that actually works:
$scope.$watch('[item1, item2] | json', function () { });
EDIT: Okay, I think this is even better:
$scope.$watch('[item1, item2]', function () { }, true);
Basically we're skipping the json step, which seemed dumb to begin with, but it wasn't working without it. They key is the often omitted 3rd parameter which turns on object equality as opposed to reference equality. Then the comparisons between our created array objects actually work right.
You can restart an existing container after it exited and your changes are still there.
docker start `docker ps -q -l` # restart it in the background
docker attach `docker ps -q -l` # reattach the terminal & stdin
Solution is very simple - Run Visual Studio Application in Admin mode !
I just had a jaw-drop moment - Termux allows you to install NodeJS on an Android device!
It seems to work for a basic Websocket Speed Test I had on hand. The http served by it can be accessed both locally and on the network.
There is a medium post that explains the installation process
Basically: 1. Install termux 2. apt install nodejs 3. node it up!
One restriction I've run into - it seems the shared folders don't have the necessary permissions to install modules. It might just be a file permission thing. The private app storage works just fine.
foreach(DataRow row in dt.Rows)
{
string value = row[3].ToString();
}
I would always recommend going to the authoritative source when trying to understand the meaning and purpose of HTTP headers.
The "Host" header field in a request provides the host and port
information from the target URI, enabling the origin server to
distinguish among resources while servicing requests for multiple
host names on a single IP address.
I think everything that you need is array_key_exists:
if (!array_key_exists('id', $access_data['Privilege'])) {
$this->Session->setFlash(__('Access Denied! You are not eligible to access this.'), 'flash_custom_success');
return $this->redirect(array('controller' => 'Dashboard', 'action' => 'index'));
}
I use Git with Visual Studio for my port of Protocol Buffers to C#. I don't use the GUI - I just keep a command line open as well as Visual Studio.
For the most part it's fine - the only problem is when you want to rename a file. Both Git and Visual Studio would rather that they were the one to rename it. I think that renaming it in Visual Studio is the way to go though - just be careful what you do at the Git side afterwards. Although this has been a bit of a pain in the past, I've heard that it actually should be pretty seamless on the Git side, because it can notice that the contents will be mostly the same. (Not entirely the same, usually - you tend to rename a file when you're renaming the class, IME.)
But basically - yes, it works fine. I'm a Git newbie, but I can get it to do everything I need it to. Make sure you have a git ignore file for bin and obj, and *.user.
My favourite is Open3
require "open3"
Open3.popen3('nroff -man') { |stdin, stdout, stderr| ... }
This is an old question, but I think newer solutions are worthy of a mention. Checkout LoadImpact: http://www.loadimpact.com.
Many good answers have been given to this question so far, but I still miss one with awk
not using getline
. Since, in general, it is not necessary to use getline
, I would go for:
awk ' f && NR==f+1; /blah/ {f=NR}' file #all matches after "blah"
or
awk '/blah/ {f=NR} f && NR==f+1' file #matches after "blah" not being also "blah"
The logic always consists in storing the line where "blah" is found and then printing those lines that are one line after.
Sample file:
$ cat a
0
blah1
1
2
3
blah2
4
5
6
blah3
blah4
7
Get all the lines after "blah". This prints another "blah" if it appears after the first one.
$ awk 'f&&NR==f+1; /blah/ {f=NR}' a
1
4
blah4
7
Get all the lines after "blah" if they do not contain "blah" themselves.
$ awk '/blah/ {f=NR} f && NR==f+1' a
1
4
7
Can a Python function be an argument of another function?
Yes.
def myfunc(anotherfunc, extraArgs):
anotherfunc(*extraArgs)
To be more specific ... with various arguments ...
>>> def x(a,b):
... print "param 1 %s param 2 %s"%(a,b)
...
>>> def y(z,t):
... z(*t)
...
>>> y(x,("hello","manuel"))
param 1 hello param 2 manuel
>>>
The column is ambiguous because it appears in both tables you would need to specify the where (or sort) field fully such as us_music.genre or de_music.genre but you'd usually specify two tables if you were then going to join them together in some fashion. The structure your dealing with is occasionally referred to as a partitioned table although it's usually done to separate the dataset into distinct files as well rather than to just split the dataset arbitrarily. If you're in charge of the database structure and there's no good reason to partition the data then I'd build one big table with an extra "origin" field that contains a country code but you're probably doing it for legitimate performance reason. Either use a union to join the tables you're interested in http://dev.mysql.com/doc/refman/5.0/en/union.html or by using the Merge database engine http://dev.mysql.com/doc/refman/5.1/en/merge-storage-engine.html.