Some feedback on the segment of code, though for the most part, it should work...
void main(int c,char **args)
int main
- the standard defines main
as returning an int
.c
and args
are typically named argc
and argv
, respectfully, but you are allowed to name them anything...
{
DIR *dir;
struct dirent *dent;
char buffer[50];
strcpy(buffer,args[1]);
args[1]
is longer than 50 bytes, buffer
will not be able to hold it, and you will write to memory that you shouldn't. There's no reason I can see to copy the buffer here, so you can sidestep these issues by just not using strcpy
......
dir=opendir(buffer); //this part
If this returning NULL
, it can be for a few reasons:
./your_program my directory
, which will fail, because it tries to opendir("my")
)Your subquery is selecting two columns, while you are using it to project one column (as part of the outer SELECT
clause). You can only select one column from such a query in this context.
Consider joining to the users
table instead; this will give you more flexibility when selecting what columns you want from users
.
SELECT
topics.id,
topics.name,
topics.post_count,
topics.view_count,
COUNT( posts.solved_post ) AS solved_post,
users.username AS posted_by,
users.id AS posted_by_id
FROM topics
LEFT OUTER JOIN posts ON posts.topic_id = topics.id
LEFT OUTER JOIN users ON users.id = posts.posted_by
WHERE topics.cat_id = :cat
GROUP BY topics.id
'pywin32' is its canonical name.
<style type="text/css">
.topcorner{
position:absolute;
top:10;
right:15;
}
</style>
You ca also use this in CSS external file.
It's due to the fact that you have one long word without spaces. You can use the word-wrap
property to cause the text to break:
#w74 { word-wrap: break-word; }
It has fairly good browser support, too. See documentation about it here.
The password is present in the log generated by docker run image as shown in the example below.
Additionally you can check the directory /var/jenkins_home/secrets/ Its in the file name initialAdminPassword
You can use cat /var/jenkins_home/secrets/initialAdminPassword to read it.
[int(i) for i in str(number)]
or, if do not want to use a list comprehension or you want to use a base different from 10
from __future__ import division # for compatibility of // between Python 2 and 3
def digits(number, base=10):
assert number >= 0
if number == 0:
return [0]
l = []
while number > 0:
l.append(number % base)
number = number // base
return l
You can use:
if [ 1 -eq 0 ]; then
echo "The code that you want commented out goes here."
echo "This echo statement will not be called."
fi
concept47's approach is the right way to do it, but I'd advise to merge with the --no-ff option in order to keep your commit history clear.
git checkout develop
git pull --rebase
git checkout NewFeatureBranch
git merge --no-ff master
Take a look at that : http://davidwalsh.name/detect-android
JavaScript:
var ua = navigator.userAgent.toLowerCase();
var isAndroid = ua.indexOf("android") > -1; //&& ua.indexOf("mobile");
if(isAndroid) {
// Do something!
// Redirect to Android-site?
window.location = 'http://android.davidwalsh.name';
}
PHP:
$ua = strtolower($_SERVER['HTTP_USER_AGENT']);
if(stripos($ua,'android') !== false) { // && stripos($ua,'mobile') !== false) {
header('Location: http://android.davidwalsh.name');
exit();
}
Edit : As pointed out in some comments, this will work in 99% of the cases, but some edge cases are not covered. If you need a much more advanced and bulletproofed solution in JS, you should use platform.js : https://github.com/bestiejs/platform.js
yes,the sorting proceed differently. in first scenario, orders based on column1 and in addition to that process further by sorting colmun2 based on column1 .. in second scenario ,it orders completely based on column 1 only... please proceed with a simple example...u will get quickly..
Try something like:
$post_data="dispnumber=567567567&extension=6";
$url="http://xxxxxxxx.xxx/xx/xx";
$ch = curl_init();
curl_setopt($ch, CURLOPT_URL, $url);
curl_setopt($ch, CURLOPT_POST, 1);
curl_setopt($ch, CURLOPT_HTTPHEADER, array('Content-Type: application/x-www-form-urlencoded'));
curl_setopt($ch, CURLOPT_POSTFIELDS, $post_data);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$result = curl_exec($ch);
echo $result;
You should use datetime
object, not str
.
>>> from datetime import datetime
>>> cr_date = datetime(2013, 10, 31, 18, 23, 29, 227)
>>> cr_date.strftime('%m/%d/%Y')
'10/31/2013'
To get the datetime object from the string, use datetime.datetime.strptime
:
>>> datetime.strptime(cr_date, '%Y-%m-%d %H:%M:%S.%f')
datetime.datetime(2013, 10, 31, 18, 23, 29, 227)
>>> datetime.strptime(cr_date, '%Y-%m-%d %H:%M:%S.%f').strftime('%m/%d/%Y')
'10/31/2013'
You can try using @RequestBodyParam
@RequestMapping(value = "/saveData", headers="Content-Type=application/json", method = RequestMethod.POST)
@ResponseBody
public ResponseEntity<Boolean> saveData(@RequestBodyParam String source,@RequestBodyParam JsonDto json) throws MyException {
...
}
Its probably also worth mentioning that you can do the following:
Right click the table you want to duplicate > Script Table As > Create To > New Query Editor Window
Then, where is says the name of the table you just right clicked in the script that has been generated, change the name to what ever you want your new table to be called and click Execute
With Java 8 you can use a method reference for your comparator:
import static java.util.Comparator.comparing;
Collections.sort(list, comparing(MyObject::getStartDate));
You have obviously a problem with the WCF security subsystem. What binding are you using? What authentication? Encryption? Signing? Do you have to cross domain boundaries?
A bit of goggling further reveals that others are experiencing this error if the clocks of client and server are out of sync (more than about five minutes) because some security schemata rely on synchronized clocks.
If you want to test if an object is strictly or extends a Hash
, use:
value = {}
value.is_a?(Hash) || value.is_a?(Array) #=> true
But to make value of Ruby's duck typing, you could do something like:
value = {}
value.respond_to?(:[]) #=> true
It is useful when you only want to access some value using the value[:key]
syntax.
Please note that
Array.new["key"]
will raise aTypeError
.
"Global" JavaScript variables are members of the window object. You could access the reference as a member of the window object.
var v = "initialized";
function byref(ref) {
window[ref] = "changed by ref";
}
byref((function(){for(r in window){if(window[r]===v){return(r);}}})());
// It could also be called like... byref('v');
console.log(v); // outputs changed by ref
Note, the above example will not work for variables declared within a function.
You can also set the TMPDIR
environment variable.
In some situations (Docker in my case) it's more convenient to set an environment variable than to update a config file.
Code to detect the operating system of an user
let os = navigator.userAgent.slice(13).split(';')
os = os[0]
console.log(os)
Windows NT 10.0
It seems that many other posts are concerned about speed (i.e best = fastest). What about simplicity? Consider:
char ReverseBits(char character) {
char reversed_character = 0;
for (int i = 0; i < 8; i++) {
char ith_bit = (c >> i) & 1;
reversed_character |= (ith_bit << (sizeof(char) - 1 - i));
}
return reversed_character;
}
and hope that clever compiler will optimise for you.
If you want to reverse a longer list of bits (containing sizeof(char) * n
bits), you can use this function to get:
void ReverseNumber(char* number, int bit_count_in_number) {
int bytes_occupied = bit_count_in_number / sizeof(char);
// first reverse bytes
for (int i = 0; i <= (bytes_occupied / 2); i++) {
swap(long_number[i], long_number[n - i]);
}
// then reverse bits of each individual byte
for (int i = 0; i < bytes_occupied; i++) {
long_number[i] = ReverseBits(long_number[i]);
}
}
This would reverse [10000000, 10101010] into [01010101, 00000001].
I wanted to be able to take a function name as a string, call it, AND pass an argument to the function. I couldn't get the selected answer for this question to do that, but this answer explained it exactly, and here is a short demo.
function test_function(argument) {
alert('This function ' + argument);
}
functionName = 'test_function';
window[functionName]('works!');
This also works with multiple arguments.
There's no "direct" way of doing so but you can specify the pattern twice as in: a[^a]*a
that match up to the second "a".
The alternative is to use your programming language (perl? C#? ...) to match the first occurence and then the second one.
EDIT: I've seen other responded using the "non-greedy" operators which might be a good way to go, assuming you have them in your regex library!
Actually the minimum amount of Angular to be used (as requested in the original question) is just adding a class to the DOM element when show
variable is true, and perform the animation/transition via CSS.
So your minimum Angular code is this:
<div class="box-opener" (click)="show = !show">
Open/close the box
</div>
<div class="box" [class.opened]="show">
<!-- Content -->
</div>
With this solution, you need to create CSS rules for the transition, something like this:
.box {
background-color: #FFCC55;
max-height: 0px;
overflow-y: hidden;
transition: ease-in-out 400ms max-height;
}
.box.opened {
max-height: 500px;
transition: ease-in-out 600ms max-height;
}
If you have retro-browser-compatibility issues, just remember to add the vendor prefixes in the transition
s.
See the example here
The line $('#myTextBox').focus()
alone won't put the cursor in the text box, instead use:
$('#myTextBox:text:visible:first').focus();
To indicate to the browser that the file should be viewed in the browser, the HTTP response should include these headers:
Content-Type: application/pdf
Content-Disposition: inline; filename="filename.pdf"
To have the file downloaded rather than viewed:
Content-Type: application/pdf
Content-Disposition: attachment; filename="filename.pdf"
The quotes around the filename are required if the filename contains special characters such as filename[1].pdf
which may otherwise break the browser's ability to handle the response.
How you set the HTTP response headers will depend on your HTTP server (or, if you are generating the PDF response from server-side code: your server-side programming language).
By default, the docker daemon will use the unix socket unix:///var/run/docker.sock
(you can check this is the case for you by doing a sudo netstat -tunlp
and note that there is no docker daemon process listening on any ports). It's recommended to keep this setting for security reasons but it sounds like Riak requires the daemon to be running on a TCP socket.
To start the docker daemon with a TCP socket that anybody can connect to, use the -H
option:
sudo docker -H 0.0.0.0:2375 -d &
Warning: This means machines that can talk to the daemon through that TCP socket can get root access to your host machine.
Related docs:
This worked for me. I wanted my script to exit with an error message if a parameter wasn't set.
#!/usr/bin/env bash
set -o errexit
# Get the value and empty validation check all in one
VER="${1:?You must pass a version of the format 0.0.0 as the only argument}"
This returns with an error when it's run
peek@peek:~$ ./setver.sh
./setver.sh: line 13: 1: You must pass a version of the format 0.0.0 as the only argument
Try this option if you just want to check if the value set=VALID or unset/empty=INVALID.
TSET="good val"
TEMPTY=""
unset TUNSET
if [ "${TSET:-}" ]; then echo "VALID"; else echo "INVALID";fi
# VALID
if [ "${TEMPTY:-}" ]; then echo "VALID"; else echo "INVALID";fi
# INVALID
if [ "${TUNSET:-}" ]; then echo "VALID"; else echo "INVALID";fi
# INVALID
Or, Even short tests ;-)
[ "${TSET:-}" ] && echo "VALID" || echo "INVALID"
[ "${TEMPTY:-}" ] && echo "VALID" || echo "INVALID"
[ "${TUNSET:-}" ] && echo "VALID" || echo "INVALID"
And this is the answer to the question. Use this if you just want to check if the value set/empty=VALID or unset=INVALID.
NOTE, the "1" in "..-1}" is insignificant, it can be anything (like x)
TSET="good val"
TEMPTY=""
unset TUNSET
if [ "${TSET+1}" ]; then echo "VALID"; else echo "INVALID";fi
# VALID
if [ "${TEMPTY+1}" ]; then echo "VALID"; else echo "INVALID";fi
# VALID
if [ "${TUNSET+1}" ]; then echo "VALID"; else echo "INVALID";fi
# INVALID
Short tests
[ "${TSET+1}" ] && echo "VALID" || echo "INVALID"
[ "${TEMPTY+1}" ] && echo "VALID" || echo "INVALID"
[ "${TUNSET+1}" ] && echo "VALID" || echo "INVALID"
I dedicate this answer to @mklement0 (comments) who challenged me to answer the question accurately.
Reference http://pubs.opengroup.org/onlinepubs/9699919799/utilities/V3_chap02.html#tag_18_06_02
WinMount provides an easiest way to mount VMDK as a virtual disk. You can read or write to the vmdk file without loading the virtual system. Here shows you how to do: http://www.winmount.com/mount_vmdk.html
What type of sql database are using (MSSQL, Oracle etc)? I believe what you have written is correct.
You could also write the first query like this:
SELECT s.sid, s.name
FROM Supplier s
WHERE (SELECT COUNT(DISTINCT pr.jid)
FROM Supplies su, Projects pr
WHERE su.sid = s.sid
AND pr.jid = su.jid) >= 2
It's a little more readable, and less mind-bending than trying to do it with GROUP BY. Performance may differ though.
You can keep primitive type by setting default value, in the your case just add "required = false" property:
@RequestParam(value = "i", required = false, defaultValue = "10") int i
P.S. This page from Spring documentation might be useful: Annotation Type RequestParam
If you want to change background color, try this:
plt.rcParams['figure.facecolor'] = 'white'
An older post contains code for a method to resize your UIImage. The relevant portion is as follows:
+ (UIImage*)imageWithImage:(UIImage*)image
scaledToSize:(CGSize)newSize;
{
UIGraphicsBeginImageContext( newSize );
[image drawInRect:CGRectMake(0,0,newSize.width,newSize.height)];
UIImage* newImage = UIGraphicsGetImageFromCurrentImageContext();
UIGraphicsEndImageContext();
return newImage;
}
As far as cropping goes, I believe that if you alter the method to use a different size for the scaling than for the context, your resulting image should be clipped to the bounds of the context.
As of Xcode 7.0.1 println is change to print. Look at the image. there are lot more we can print out.
From Django docs:
The include tag should be considered as an implementation of "render this subtemplate and include the HTML", not as "parse this subtemplate and include its contents as if it were part of the parent". This means that there is no shared state between included templates -- each include is a completely independent rendering process.
So Django doesn't grab any blocks from your commondata.html and it doesn't know what to do with rendered html outside blocks.
If you are using intellij, then try restarting intellij cache
See if it works, it worked for me.
For SDK >= 23, please add setLargeIcon
notification = new Notification.Builder(this)
.setSmallIcon(R.drawable.ic_launcher)
.setLargeIcon(context.getResources(), R.drawable.lg_logo))
.setContentTitle(title)
.setStyle(new Notification.BigTextStyle().bigText(msg))
.setAutoCancel(true)
.setContentText(msg)
.setContentIntent(contentIntent)
.setSound(sound)
.build();
You can use the base64
CLI tool to generate the base64 encoded version of your username + password like this:
$ echo -n "joeuser:secretpass" | base64
am9ldXNlcjpzZWNyZXRwYXNz
-or-
$ base64 <<<"joeuser:secretpass"
am9ldXNlcjpzZWNyZXRwYXNzCg==
Base64 is reversible so you can also decode it to confirm like this:
$ echo -n "joeuser:secretpass" | base64 | base64 -D
joeuser:secretpass
-or-
$ base64 <<<"joeuser:secretpass" | base64 -D
joeuser:secretpass
NOTE: username = joeuser, password = secretpass
You can put this together into curl
like this:
$ curl -H "Authorization: Basic $(base64 <<<"joeuser:secretpass")" http://example.com
Most will likely agree that if you're going to bother doing this, then you might as well just use curl
's -u
option.
$ curl --help |grep -- "--user " -u, --user USER[:PASSWORD] Server user and password
For example:
$ curl -u someuser:secretpass http://example.com
But you can do this in a semi-safer manner if you keep your credentials in a encrypted vault service such as LastPass or Pass.
For example, here I'm using the LastPass' CLI tool, lpass
, to retrieve my credentials:
$ curl -u $(lpass show --username example.com):$(lpass show --password example.com) \
http://example.com
There's an even safer way to hand your credentials off to curl
though. This method makes use of the -K
switch.
$ curl -X GET -K \
<(cat <<<"user = \"$(lpass show --username example.com):$(lpass show --password example.com)\"") \
http://example.com
When used, your details remain hidden, since they're passed to curl
via a temporary file descriptor, for example:
+ curl -skK /dev/fd/63 -XGET -H 'Content-Type: application/json' https://es-data-01a.example.com:9200/_cat/health
++ cat
+++ lpass show --username example.com
+++ lpass show --password example.com
1561075296 00:01:36 rdu-es-01 green 9 6 2171 1085 0 0 0 0 - 100.0%
NOTE: Above I'm communicating with one of our Elasticsearch nodes, inquiring about the cluster's health.
This method is dynamically creating a file with the contents user = "<username>:<password>"
and giving that to curl
.
The methods shown above are facilitating a feature known as Basic Authorization that's part of the HTTP standard.
When the user agent wants to send authentication credentials to the server, it may use the Authorization field.
The Authorization field is constructed as follows:
- The username and password are combined with a single colon (:). This means that the username itself cannot contain a colon.
- The resulting string is encoded into an octet sequence. The character set to use for this encoding is by default unspecified, as long as it is compatible with US-ASCII, but the server may suggest use of UTF-8 by sending the charset parameter.
- The resulting string is encoded using a variant of Base64.
- The authorization method and a space (e.g. "Basic ") is then prepended to the encoded string.
For example, if the browser uses Aladdin as the username and OpenSesame as the password, then the field's value is the base64-encoding of Aladdin:OpenSesame, or QWxhZGRpbjpPcGVuU2VzYW1l. Then the Authorization header will appear as:
Authorization: Basic QWxhZGRpbjpPcGVuU2VzYW1l
Source: Basic access authentication
As this post gets a bit of popularity I edited it a bit. Spring Boot 2.x.x changed default JDBC connection pool from Tomcat to faster and better HikariCP. Here comes incompatibility, because HikariCP uses different property of jdbc url. There are two ways how to handle it:
OPTION ONE
There is very good explanation and workaround in spring docs:
Also, if you happen to have Hikari on the classpath, this basic setup does not work, because Hikari has no url property (but does have a jdbcUrl property). In that case, you must rewrite your configuration as follows:
app.datasource.jdbc-url=jdbc:mysql://localhost/test
app.datasource.username=dbuser
app.datasource.password=dbpass
OPTION TWO
There is also how-to in the docs how to get it working from "both worlds". It would look like below. ConfigurationProperties bean would do "conversion" for jdbcUrl
from app.datasource.url
@Configuration
public class DatabaseConfig {
@Bean
@ConfigurationProperties("app.datasource")
public DataSourceProperties dataSourceProperties() {
return new DataSourceProperties();
}
@Bean
@ConfigurationProperties("app.datasource")
public HikariDataSource dataSource(DataSourceProperties properties) {
return properties.initializeDataSourceBuilder().type(HikariDataSource.class)
.build();
}
}
mysql> set global sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION';
mysql> set session sql_mode='STRICT_TRANS_TABLES,NO_ZERO_IN_DATE,NO_ZERO_DATE,ERROR_FOR_DIVISION_BY_ZERO,NO_AUTO_CREATE_USER,NO_ENGINE_SUBSTITUTION';
mysql> exit;
First select the text
To convert lowercase to uppercase, press Ctrl+Shift+U
To convert uppercase to lowercase, press Ctrl+U
Further to Stephen Weinberg's answer, I have since implemented a handy tool called iojson, which helps to populate data to an existing object easily as well as encoding the existing object to a JSON string. A iojson middleware is also provided to work with other middlewares. More examples can be found at https://github.com/junhsieh/iojson
Example:
func main() {
jsonStr := `{"Status":true,"ErrArr":[],"ObjArr":[{"Name":"My luxury car","ItemArr":[{"Name":"Bag"},{"Name":"Pen"}]}],"ObjMap":{}}`
car := NewCar()
i := iojson.NewIOJSON()
if err := i.Decode(strings.NewReader(jsonStr)); err != nil {
fmt.Printf("err: %s\n", err.Error())
}
// populating data to a live car object.
if v, err := i.GetObjFromArr(0, car); err != nil {
fmt.Printf("err: %s\n", err.Error())
} else {
fmt.Printf("car (original): %s\n", car.GetName())
fmt.Printf("car (returned): %s\n", v.(*Car).GetName())
for k, item := range car.ItemArr {
fmt.Printf("ItemArr[%d] of car (original): %s\n", k, item.GetName())
}
for k, item := range v.(*Car).ItemArr {
fmt.Printf("ItemArr[%d] of car (returned): %s\n", k, item.GetName())
}
}
}
Sample output:
car (original): My luxury car
car (returned): My luxury car
ItemArr[0] of car (original): Bag
ItemArr[1] of car (original): Pen
ItemArr[0] of car (returned): Bag
ItemArr[1] of car (returned): Pen
I had the same problem, with version 3.4.2
to run it (if you installed it with homebrew) run the process like this:
$ mongod --dbpath /usr/local/var/mongodb
Like others mentioned in this thread, replacing the entire body HTML is a bad idea because it reinserts the entire DOM and can potentially break any other javascript that was acting on those elements.
Instead, replace just the text on your page and not the DOM elements themselves using jQuery filter:
$('body :not(script)').contents().filter(function() {
return this.nodeType === 3;
}).replaceWith(function() {
return this.nodeValue.replace('-9o0-9909','The new string');
});
this.nodeType is the type of node we are looking to replace the contents of. nodeType 3 is text. See the full list here.
This builds on the answer from JaredPar... and is for VS2017. The same "Build and Run" options are present in Visual Studio 2017.
I was getting, The command "chmod +x """ exited with code 1
In the build output window, I searched for "Error" and found a few errors in the same general area. I was able to click on a link in the build output, and found that the error involved this entry in the .targets file:
<Target Name="ChmodChromeDriver" BeforeTargets="BeforeBuild" Condition="'$(WebDriverPlatform)' != 'win32'">
<Exec Command="chmod +x "$(ChromeDriverSrcPath)"" />
</Target>
In the build output, I also found a more detailed error message that essentially stated that it couldn't find Selenium.WebDriver.ChromeDriver v2.36 in the packages folder it was looking in. I checked the project's NuGet packages, and version 2.36 was indeed in the list of installed packages. I did find the package files for 2.36, and changed the attributes on the folder, subfolders and files from "Read Only" to "Read/Write". Built, but same failure. Sometimes "updating" to a different version of the package and then updating back to the original can fix this type of error. So I "updated" the reference in Manage NuGet packages to 2.37, built, failed, then "updated" back to 2.36, built, and the build succeeded without the "chmod +x" error message.
The project I was building was based on a Visual Studio Project template for Appium test tooling, template name "Develop_Automated_Test".
Is very easy, you just need to use method_field('PUT')
like this:
HTML:
<form action="{{ route('route_name') }}" method="post">
{{ method_field('PUT') }}
{{ csrf_field() }}
</form>
or
<form action="{{ route('route_name') }}" method="post">
<input type="hidden" name="_method" value="PUT">
<input type="hidden" name="_token" value="{{ csrf_token() }}">
</form>
Regards!
I have created following class
@Configuration
public class ConfigUtility {
@Autowired
private Environment env;
public String getProperty(String pPropertyKey) {
return env.getProperty(pPropertyKey);
}
}
and called as follow to get application.properties value
@Autowired
private ConfigUtility configUtil;
public AppResponse getDetails() {
AppResponse response = new AppResponse();
String email = configUtil.getProperty("emailid");
return response;
}
unit tested, working as expected...
Find that dll on your PC, and copy it into the same directory your executable is in.
I don't think there is a way to do that out-of-the-box. A possibly cleaner solution would be:
Stream.of(objects)
.filter(c -> c instanceof Client)
.map(c -> (Client) c)
.map(Client::getID)
.forEach(System.out::println);
or, as suggested in the comments, you could use the cast
method - the former may be easier to read though:
Stream.of(objects)
.filter(Client.class::isInstance)
.map(Client.class::cast)
.map(Client::getID)
.forEach(System.out::println);
I find the existing answers a little confusing, because they only indirectly indicate the essential mystifying thing in the code example: both* the "print i" and the "next(a)" are causing their results to be printed.
Since they're printing alternating elements of the original sequence, and it's unexpected that the "next(a)" statement is printing, it appears as if the "print i" statement is printing all the values.
In that light, it becomes more clear that assigning the result of "next(a)" to a variable inhibits the printing of its' result, so that just the alternate values that the "i" loop variable are printed. Similarly, making the "print" statement emit something more distinctive disambiguates it, as well.
(One of the existing answers refutes the others because that answer is having the example code evaluated as a block, so that the interpreter is not reporting the intermediate values for "next(a)".)
The beguiling thing in answering questions, in general, is being explicit about what is obvious once you know the answer. It can be elusive. Likewise critiquing answers once you understand them. It's interesting...
'Inside the Enter event
TextBox1.SelectAll();
Ok, after trying it here is what you want:
This selected all the text on entry, but allowed me to highlight part of the text afterwards, or allow you to highlight on the first click.
By request:
bool entered = false;
private void textBox1_Enter(object sender, EventArgs e)
{
entered = true;
textBox1.SelectAll(); //From Jakub's answer.
}
private void textBox1_Click(object sender, EventArgs e)
{
if (entered) textBox1.SelectAll();
entered = false;
}
private void textBox1_MouseMove(object sender, MouseEventArgs e)
{
if (entered) entered = false;
}
For me, the tabbing into the control selects all the text.
ON [PRIMARY] will create the structures on the "Primary" filegroup. In this case the primary key index and the table will be placed on the "Primary" filegroup within the database.
What is the difference between
<init-param>
and<context-param>
!?
Single servlet versus multiple servlets.
Other Answers give details, but here is the summary:
A web app, that is, a “context”, is made up of one or more servlets.
<init-param>
defines a value available to a single specific servlet within a context.<context-param>
defines a value available to all the servlets within a context.Are you sure you're running your unit tests in Debug? Debug.WriteLine won't be called in Release builds.
Two options to try are:
Trace.WriteLine(), which is built into release builds as well as debug
Undefine DEBUG in your build settings for the unit test
instead of id use title to identify your element and write the code as below.
$(document).ready(()=>{
$("input[title='MyObject']").change(()=>{
console.log("Field has been changed...")
})
});
let canvas = document.getElementById('canvas');_x000D_
canvas.setAttribute('width', window.innerWidth);_x000D_
canvas.setAttribute('height', window.innerHeight);_x000D_
let ctx = canvas.getContext('2d');_x000D_
_x000D_
//Draw Canvas Fill mode_x000D_
ctx.fillStyle = 'blue';_x000D_
ctx.fillRect(0,0,canvas.width, canvas.height);
_x000D_
* { margin: 0; padding: 0; box-sizing: border-box; }_x000D_
body { overflow: hidden; }
_x000D_
<canvas id='canvas'></canvas>
_x000D_
const a = [1, 2, 3]; // -> [2, 3]
// Mutable solutions: update array 'a', 'c' will contain the removed item
const c = a.shift(); // prefered mutable way
const [c] = a.splice(0, 1);
// Immutable solutions: create new array 'b' and leave array 'a' untouched
const b = a.slice(1); // prefered immutable way
const b = a.filter((_, i) => i > 0);
const [c, ...b] = a; // c: the removed item
In Java, an int
is 32 bits. A byte
is 8 bits
.
Most primitive types in Java are signed, and byte
, short
, int
, and long
are encoded in two's complement. (The char
type is unsigned, and the concept of a sign is not applicable to boolean
.)
In this number scheme the most significant bit specifies the sign of the number. If more bits are needed, the most significant bit ("MSB") is simply copied to the new MSB.
So if you have byte 255
: 11111111
and you want to represent it as an int
(32 bits) you simply copy the 1 to the left 24 times.
Now, one way to read a negative two's complement number is to start with the least significant bit, move left until you find the first 1, then invert every bit afterwards. The resulting number is the positive version of that number
For example: 11111111
goes to 00000001
= -1
. This is what Java will display as the value.
What you probably want to do is know the unsigned value of the byte.
You can accomplish this with a bitmask that deletes everything but the least significant 8 bits. (0xff)
So:
byte signedByte = -1;
int unsignedByte = signedByte & (0xff);
System.out.println("Signed: " + signedByte + " Unsigned: " + unsignedByte);
Would print out: "Signed: -1 Unsigned: 255"
What's actually happening here?
We are using bitwise AND to mask all of the extraneous sign bits (the 1's to the left of the least significant 8 bits.) When an int is converted into a byte, Java chops-off the left-most 24 bits
1111111111111111111111111010101
&
0000000000000000000000001111111
=
0000000000000000000000001010101
Since the 32nd bit is now the sign bit instead of the 8th bit (and we set the sign bit to 0 which is positive), the original 8 bits from the byte are read by Java as a positive value.
This is the flow often happens in this case. You run a command with no admin rights, you get message npm ERR! Please try running this command again as root/Administrator.
. Then you open one more CLI(cmd, powershell, bash or whatever) and don't close the previous CLI. It appears you have 2 prompts opened in the same directory. And until you close CLI which runs with no admin rights you will be continuously getting npm ERR! Please try running this command again as root/Administrator.
So close CLI which runs with no admins rights before running a new one.
NOTE: a lot of IDE has embedded CLI(Visual Studio, VS Code etc) so please close the instance of IDE as well
$.extend(true, [], [['a', ['c']], 'b'])
That should do it for you.
try this
document.getElementById("datapicker").addEventListener("submit", function())
The problem, as the Traceback says, comes from the line x[i+1] = x[i] + ( t[i+1] - t[i] ) * f( x[i], t[i] )
. Let's replace it in its context:
i + 1 >= len(x)
<=> i >= 0
, the element x[i+1]
doesn't exist. Here, this element doesn't exist since the beginning of the for loop.To solve this, you must replace x[i+1] = x[i] + ( t[i+1] - t[i] ) * f( x[i], t[i] )
by x.append(x[i] + ( t[i+1] - t[i] ) * f( x[i], t[i] ))
.
You need to first change the constraint and then animate the update.
This should be in the superview.
self.nameInputConstraint.constant = 8
Swift 2
UIView.animateWithDuration(0.5) {
self.view.layoutIfNeeded()
}
Swift 3, 4, 5
UIView.animate(withDuration: 0.5) {
self.view.layoutIfNeeded()
}
Here column name must be decimal.
select CAST(columnname AS decimal(38,0)) from table
Below image is the answer. Don't take it too complex.
You asked about performance. See this perf test comparing 'concat', '+' and 'join' - in short the + operator wins by far.
This conversion is well defined and will yield the value UINT_MAX - 61
. On a platform where unsigned int
is a 32-bit type (most common platforms, these days), this is precisely the value that others are reporting. Other values are possible, however.
The actual language in the standard is
If the destination type is unsigned, the resulting value is the least unsigned integer congruent to the source integer (modulo 2^n where n is the number of bits used to represent the unsigned type).
This is how i fix my issue
Intially had this in .env of the root of my project
const db_port = 90101
const db_host="localhost"
const db_username="name"
const db_password="pwd"
const db_name="db"
And all my env variables where undefined.
I fixed it by removing all the const and using just key=value insted of const key="value"
db_port = 90101
db_host=localhost
db_username=name
db_password=pws
db_name=db
I found the solution in this topic and I code this:
$cards = DB::select("SELECT
cards.id_card,
cards.hash_card,
cards.`table`,
users.name,
0 as total,
cards.card_status,
cards.created_at as last_update
FROM cards
LEFT JOIN users
ON users.id_user = cards.id_user
WHERE hash_card NOT IN ( SELECT orders.hash_card FROM orders )
UNION
SELECT
cards.id_card,
orders.hash_card,
cards.`table`,
users.name,
sum(orders.quantity*orders.product_price) as total,
cards.card_status,
max(orders.created_at) last_update
FROM menu.orders
LEFT JOIN cards
ON cards.hash_card = orders.hash_card
LEFT JOIN users
ON users.id_user = cards.id_user
GROUP BY hash_card
ORDER BY id_card ASC");
Extending on pkozlowski.opensource's answer and using javascript array's
builtin filter method a prettified solution could be this:
.filter('weDontLike', function(){
return function(items, name){
return items.filter(function(item) {
return item.name != name;
});
};
});
Here's the jsfiddle link.
More on Array filter here.
If I understand this correctly, you're trying to make backspace delete both the visible * character on screen and the cached character in your pass variable?
If so, then just change your else block to this:
else
{
Console.Write("\b");
pass = pass.Remove(pass.Length -1);
}
I know this is an old question, but since the other answers all
I thought I'd add a "pure" option which only requires datetime operations and works with SQL Server 2005+:
SELECT DATEADD(dd, -DATEDIFF(dd, 0, mydatetime), mydatetime)
This calculates the difference (in whole days) between date zero (1900-01-01) and the given date and then subtracts that number of days from the given date, thereby setting its date component to zero.
I can't get it to work on $.get()
because it has no complete
event.
I suggest to use $.ajax()
like this,
$.ajax({
url: 'http://www.example.org',
data: {'a':1,'b':2,'c':3},
dataType: 'xml',
complete : function(){
alert(this.url)
},
success: function(xml){
}
});
In Python, you wouldn't use indexes for this at all, but just deal with the values—[value for value in a if value > 2]
. Usually dealing with indexes means you're not doing something the best way.
If you do need an API similar to Matlab's, you would use numpy, a package for multidimensional arrays and numerical math in Python which is heavily inspired by Matlab. You would be using a numpy array instead of a list.
>>> import numpy
>>> a = numpy.array([1, 2, 3, 1, 2, 3])
>>> a
array([1, 2, 3, 1, 2, 3])
>>> numpy.where(a > 2)
(array([2, 5]),)
>>> a > 2
array([False, False, True, False, False, True], dtype=bool)
>>> a[numpy.where(a > 2)]
array([3, 3])
>>> a[a > 2]
array([3, 3])
There is a bunch on here:
http://www.webservicex.net/WS/wscatlist.aspx
Just google for "Free WebService" or "Open WebService" and you'll find tons of open SOAP endpoints.
Remember, you can get a WSDL from any ASMX endpoint by adding ?WSDL to the url.
In Rails 4 you could do:
GroupMember.find_or_create_by(member_id: 4, group_id: 7)
And use where
is different:
GroupMember.where(member_id: 4, group_id: 7).first_or_create
This will call create
on GroupMember.where(member_id: 4, group_id: 7)
:
GroupMember.where(member_id: 4, group_id: 7).create
On the contrary, the find_or_create_by(member_id: 4, group_id: 7)
will call create
on GroupMember
:
GroupMember.create(member_id: 4, group_id: 7)
Please see this relevant commit on rails/rails.
I found so many solution but I never got correct solution. But i have created some code to find minutes please check it.
<?php
$time1 = "23:58";
$time2 = "01:00";
$time1 = explode(':',$time1);
$time2 = explode(':',$time2);
$hours1 = $time1[0];
$hours2 = $time2[0];
$mins1 = $time1[1];
$mins2 = $time2[1];
$hours = $hours2 - $hours1;
$mins = 0;
if($hours < 0)
{
$hours = 24 + $hours;
}
if($mins2 >= $mins1) {
$mins = $mins2 - $mins1;
}
else {
$mins = ($mins2 + 60) - $mins1;
$hours--;
}
if($mins < 9)
{
$mins = str_pad($mins, 2, '0', STR_PAD_LEFT);
}
if($hours < 9)
{
$hours =str_pad($hours, 2, '0', STR_PAD_LEFT);
}
echo $hours.':'.$mins;
?>
It gives output in hours and minutes for example 01 hour 02 minutes like 01:02
If you got a Apache Maven project, it's easy to use this package in your project. Just specify it in your pom.xml
:
<project>
...
<properties>
<version.commons-io>2.4</version.commons-io>
</properties>
<dependencies>
<dependency>
<groupId>commons-io</groupId>
<artifactId>commons-io</artifactId>
<version>${version.commons-io}</version>
</dependency>
</dependencies>
...
</project>
Here's why: As it is says in the Javadoc:
The iterators returned by this class's iterator and listIterator methods are fail-fast: if the list is structurally modified at any time after the iterator is created, in any way except through the iterator's own remove or add methods, the iterator will throw a ConcurrentModificationException.
This check is done in the next()
method of the iterator (as you can see by the stacktrace). But we will reach the next()
method only if hasNext()
delivered true, which is what is called by the for each to check if the boundary is met. In your remove method, when hasNext()
checks if it needs to return another element, it will see that it returned two elements, and now after one element was removed the list only contains two elements. So all is peachy and we are done with iterating. The check for concurrent modifications does not occur, as this is done in the next()
method which is never called.
Next we get to the second loop. After we remove the second number the hasNext method will check again if can return more values. It has returned two values already, but the list now only contains one. But the code here is:
public boolean hasNext() {
return cursor != size();
}
1 != 2, so we continue to the next()
method, which now realizes that someone has been messing with the list and fires the exception.
Hope that clears your question up.
List.remove()
will not throw ConcurrentModificationException
when it removes the second last element from the list.
EXC_I386_GPFLT is surely referring to "General Protection fault", which is the x86's way to tell you that "you did something that you are not allowed to do". It typically DOESN'T mean that you access out of memory bounds, but it could be that your code is going out of bounds and causing bad code/data to be used in a way that makes for an protection violation of some sort.
Unfortunately it can be hard to figure out exactly what the problem is without more context, there are 27 different causes listed in my AMD64 Programmer's Manual, Vol 2 from 2005 - by all accounts, it is likely that 8 years later would have added a few more.
If it is a 64-bit system, a plausible scenario is that your code is using a "non-canonical pointer" - meaning that a 64-bit address is formed in such a way that the upper 16 bits of the address aren't all copies of the top of the lower 48 bits (in other words, the top 16 bits of an address should all be 0 or all 1, based on the bit just below 16 bits). This rule is in place to guarantee that the architecture can "safely expand the number of valid bits in the address range". This would indicate that the code is either overwriting some pointer data with other stuff, or going out of bounds when reading some pointer value.
Another likely causes is unaligned access with an SSE register - in other word, reading a 16-byte SSE register from an address that isn't 16-byte aligned.
There are, as I said, many other possible reasons, but most of those involve things that "normal" code wouldn't be doing in a 32- or 64-bit OS (such as loading segment registers with invalid selector index or writing to MSR's (model specific registers)).
I fear this might turn out to BE the long way round but could depend on how big your data set is – presumably more than four months for example.
Assuming your data is in ColumnA:C
and has column labels in Row 1, also that Month is formatted mmm
(this last for ease of sorting):
D2
=IF(AND(A2=A1,C2=C1),D1+1,1)
(One way to deal with what is the tricky issue of multiple entries for the same person for the same month).A1:D(last occupied row no.)
F1
.I’m hoping this would be adequate for your needs because pivot table should automatically update (provided range is appropriate) in response to additional data with refresh. If not (you hard taskmaster), continue but beware that the following steps would need to be repeated each time the source data changes.
L1
.L1
and shift down.L1
.ColumnL
, select Row Labels
and numeric values.L2:L(last selected cell)
Happy to explain further/try again (I've not really tested this) if does not suit.
EDIT (To avoid second block of steps above and facilitate updating for source data changes)
.0. Before first step 2. add a blank row at the very top and move A2:D2
up.
.2. Adjust cell references accordingly (in D3
=IF(AND(A3=A2,C3=C2),D2+1,1)
.
.3. Create pivot table from A:D
.6. Overwrite Row Labels
with Name
.
.7. PivotTable Tools, Design, Report Layout, Show in Tabular Form and sort rows and columns A>Z.
.8. Hide Row1
, ColumnG
and rows and columns that show (blank)
.
Steps .0. and .2. in the edit are not required if the pivot table is in a different sheet from the source data (recommended).
Step .3. in the edit is a change to simplify the consequences of expanding the source data set. However introduces (blank)
into pivot table that if to be hidden may need adjustment on refresh. So may be better to adjust source data range each time that changes instead: PivotTable Tools, Options, Change Data Source, Change Data Source, Select a table or range). In which case copy rather than move in .0.
$now = date('Y-m-d');
$start_date = strtotime($now);
$end_date = strtotime("+7 day", $start_date);
echo date('Y-m-d', $start_date) . ' + 7 days = ' . date('Y-m-d', $end_date);
Summary of all answers (Advantages & Disadvantages)
For single recyclerview
you can use it inside Coordinator layout.
Advantage - it will not load entire recyclerview items. So smooth loading.
Disadvantage - you can't load two recyclerview inside Coordinator layout - it produce scrolling problems
reference - https://stackoverflow.com/a/33143512/3879847
For multiple recylerview with minimum rows
you can load inside NestedScrollView
Advantage - it will scroll smoothly
Disadvantage - It load all rows of recyclerview so your activity open with delay
reference - https://stackoverflow.com/a/33143512/3879847
For multiple recylerview with large rows(more than 100)
You must go with recyclerview.
Advantage - Scroll smoothly, load smoothly
Disadvantage - You need to write more code and logic
Load each recylerview inside main recyclerview with help of multi-viewholders
ex:
MainRecyclerview
-ChildRecyclerview1 (ViewHolder1) -ChildRecyclerview2 (ViewHolder2) -ChildRecyclerview3 (ViewHolder3) -Any other layout (ViewHolder4)
Reference for multi-viewHolder - https://stackoverflow.com/a/26245463/3879847
Add -L/opt/lib
to your compiler parameters, this makes the compiler and linker search that path for libcalc.so
in that folder.
Since the value of $var
is the empty string, this:
if [ $var == $var1 ]; then
expands to this:
if [ == abcd ]; then
which is a syntax error.
You need to quote the arguments:
if [ "$var" == "$var1" ]; then
You can also use =
rather than ==
; that's the original syntax, and it's a bit more portable.
If you're using bash, you can use the [[
syntax, which doesn't require the quotes:
if [[ $var = $var1 ]]; then
Even then, it doesn't hurt to quote the variable reference, and adding quotes:
if [[ "$var" = "$var1" ]]; then
might save a future reader a moment trying to remember whether [[
... ]]
requires them.
This is caused by the limited support for the MP4 format within the video tag in Firefox. Support was not added until Firefox 21, and it is still limited to Windows 7 and above. The main reason for the limited support revolves around the royalty fee attached to the mp4 format.
Check out Supported media formats and Media formats supported by the audio and video elements directly from the Mozilla crew or the following blog post for more information:
http://pauljacobson.org/2010/01/22/2010122firefox-and-its-limited-html-5-video-support-html/
Try this
var json = '{ "key1" : "watevr1", "key2" : "watevr2", "key3" : "watevr3" }';
json = $.parseJSON(json);
var i = 0, req_index = "";
$.each(json, function(index, value){
if(index == 'key2'){
req_index = i;
}
i++;
});
alert(req_index);
Sometimes no matter what you do or follow whole internet posts. Try on the MIMETYPES of applicationhost.config of the server.
The largest number that can be represented by an n digit number in base b is bn - 1. Hence, the largest number that can be represented in N binary digits is 2N - 1. We need the smallest integer N such that:
2N - 1 = bn - 1
? 2N = bn
Taking the base 2 logarithm of both sides of the last expression gives:
log2 2N = log2 bn
? N = log2 bn
? N = log bn / log 2
Since we want the smallest integer N that satisfies the last relation, to find N, find log bn / log 2 and take the ceiling.
In the last expression, any base is fine for the logarithms, so long as both bases are the same. It is convenient here, since we are interested in the case where b = 10, to use base 10 logarithms taking advantage of log1010n == n.
For n = 3:
N = ?3 / log10 2? = 10
For n = 4:
N = ?4 / log10 2? = 14
For n = 6:
N = ?6 / log10 2? = 20
And in general, for n decimal digits:
N = ?n / log10 2?
I tried Ricardo Stuven's way but it didn't work for me. What worked in the end was adding "compact": false to my .babelrc file:
{
"compact": false,
"presets": ["latest", "react", "stage-0"]
}
There's also the online viewers:
http://www.webgraphviz.com/
http://sandbox.kidstrythisathome.com/erdos/
http://viz-js.com/
ISNUMERIC will not do - it tells you that the string can be converted to any of the numeric types, which is almost always a pointless piece of information to know. For example, all of the following are numeric, according to ISNUMERIC:
£, $, 0d0
If you want to check for digits and only digits, a negative LIKE expression is what you want:
not Value like '%[^0-9]%'
The LIKE
operator does not work with date parts like month or date but the DATEPART
operator does.
Command to find out all accounts whose Open Date was on the 1st:
SELECT *
FROM Account
WHERE DATEPART(DAY, CAST(OpenDt AS DATE)) = 1`
*CASTING OpenDt
because it's value is in DATETIME
and not just DATE
.
The following script catenates several (relative/absolute) paths (BASEPATH) with a relative path (SUBDIR):
shopt -s extglob
SUBDIR="subdir"
for BASEPATH in '' / base base/ base// /base /base/ /base//; do
echo "BASEPATH = \"$BASEPATH\" --> ${BASEPATH%%+(/)}${BASEPATH:+/}$SUBDIR"
done
The output of which is:
BASEPATH = "" --> subdir
BASEPATH = "/" --> /subdir
BASEPATH = "base" --> base/subdir
BASEPATH = "base/" --> base/subdir
BASEPATH = "base//" --> base/subdir
BASEPATH = "/base" --> /base/subdir
BASEPATH = "/base/" --> /base/subdir
BASEPATH = "/base//" --> /base/subdir
The shopt -s extglob
is only necessary to allow BASEPATH to end on multiple slashes (which is probably nonsense). Without extended globing you can just use:
echo ${BASEPATH%%/}${BASEPATH:+/}$SUBDIR
which would result in the less neat but still working:
BASEPATH = "" --> subdir
BASEPATH = "/" --> /subdir
BASEPATH = "base" --> base/subdir
BASEPATH = "base/" --> base/subdir
BASEPATH = "base//" --> base//subdir
BASEPATH = "/base" --> /base/subdir
BASEPATH = "/base/" --> /base/subdir
BASEPATH = "/base//" --> /base//subdir
Thanks,Bruno for giving me heads up on Common Name and Subject Alternative Name. As we figured out certificate was generated with CN with DNS name of network and asked for regeneration of new certificate with Subject Alternative Name entry i.e. san=ip:10.0.0.1. which is the actual solution.
But, we managed to find out a workaround with which we can able to run on development phase. Just add a static block in the class from which we are making ssl connection.
static {
HttpsURLConnection.setDefaultHostnameVerifier(new HostnameVerifier()
{
public boolean verify(String hostname, SSLSession session)
{
// ip address of the service URL(like.23.28.244.244)
if (hostname.equals("23.28.244.244"))
return true;
return false;
}
});
}
If you happen to be using Java 8, there is a much slicker way of achieving the same result:
static {
HttpsURLConnection.setDefaultHostnameVerifier((hostname, session) -> hostname.equals("127.0.0.1"));
}
This works fine as far as characters restriction, Any suggestions on error msg prompt with my code if it's not C OR L
Private Sub TXTBOX_TextChanged(sender As System.Object, e As System.EventArgs) Handles TXTBOX.TextChanged
Dim allowed As String = "C,L"
For Each C As Char In TXTBOX.Text
If allowed.Contains(C) = False Then
TXTBOX.Text = TXTBOX.Text.Remove(TXTBOX.SelectionStart - 1, 1)
TXTBOX.Select(TXTBOX.Text.Count, 0)
End If
Next
End Sub
Here's a VB.NET version I created, inspired by Joel Coehoorn's answer, Oliver's edit, and shaunmartin's comment:
<Extension()>
Public Function PadCenter(ByVal [string] As String, ByVal width As Integer, ByVal c As Char) As String
If [string] Is Nothing Then [string] = String.Empty
If (width <= [string].Length) Then Return [string]
Dim padding = width - [string].Length
Return [string].PadLeft([string].Length + (padding \ 2), c).PadRight(width, c)
End Function
<Extension()>
Public Function PadCenter(ByVal [string] As String, ByVal width As Integer) As String
If [string] Is Nothing Then [string] = String.Empty
If (width <= [string].Length) Then Return [string]
Dim padding = width - [string].Length
Return [string].PadLeft([string].Length + (padding \ 2)).PadRight(width)
End Function
This is set up as a string extension, inside a Public Module (the way you do Extensions in VB.NET, a bit different than C#). My slight change is that it treats a null string as an empty string, and it pads an empty string with the width value (meets my particular needs). Hopefully this will convert easily to C# for anyone who needs it. If there's a better way to reference the answers, edits, and comments I mentioned above, which inspired my post, please let me know and I'll do it - I'm relatively new to posting, and I couldn't figure out to leave a comment (might not have enough rep yet).
Months in Calendar object start from 0
0 = January = Calendar.JANUARY
1 = february = Calendar.FEBRUARY
I think the only way to handle this is to use JavaScript
Try this Invert text color of a specific element
If you do this with css3 it's only compatible with the newest browser versions.
Either use one of the standard date and time format strings which only specifies the date (e.g. "D" or "d"), or a custom date and time format string which only uses the date parts (e.g. "yyyy/MM/dd").
"put" has been deprecated, refrain from using it, use .of instead
ImmutableMap<String, String> myMap = ImmutableMap.of(
"city1", "Seattle",
"city2", "Delhi"
);
If by chance this error happens when working with SharePoint 2010: Rename your .json file extensions and be sure to update your restService path. No additional "track by $index" was required.
Luckily I was forwarded this link to this rationale:
.json becomes an important file type in SP2010. SP2010 includes certains webservice endpoints. The location of these files is 14hive\isapi folder. The extension of these files are .json. That is the reason it gives such a error.
"cares only that the contents of a json file is json - not its file extension"
Once the file extensions are changed, should be all set.
Coobird's answer is the correct, complete one. However, I combined his hints with those from another site to create code that works in my app (iOS/Objective-C), which I wanted to share with anyone who comes here looking for such a thing. Please, if you like/up-vote this answer, do the same for the originals; all I did was "stand on the shoulders of giants."
As for sort-order, my technique is a modified painter's algorithm: each object has (a) an altitude of the base (I call "level") and (b) an X/Y for the "base" or "foot" of the image (examples: avatar's base is at his feet; tree's base is at it's roots; airplane's base is center-image, etc.) Then I just sort lowest to highest level, then lowest (highest on-screen) to highest base-Y, then lowest (left-most) to highest base-X. This renders the tiles the way one would expect.
Code to convert screen (point) to tile (cell) and back:
typedef struct ASIntCell { // like CGPoint, but with int-s vice float-s
int x;
int y;
} ASIntCell;
// Cell-math helper here:
// http://gamedevelopment.tutsplus.com/tutorials/creating-isometric-worlds-a-primer-for-game-developers--gamedev-6511
// Although we had to rotate the coordinates because...
// X increases NE (not SE)
// Y increases SE (not SW)
+ (ASIntCell) cellForPoint: (CGPoint) point
{
const float halfHeight = rfcRowHeight / 2.;
ASIntCell cell;
cell.x = ((point.x / rfcColWidth) - ((point.y - halfHeight) / rfcRowHeight));
cell.y = ((point.x / rfcColWidth) + ((point.y + halfHeight) / rfcRowHeight));
return cell;
}
// Cell-math helper here:
// http://stackoverflow.com/questions/892811/drawing-isometric-game-worlds/893063
// X increases NE,
// Y increases SE
+ (CGPoint) centerForCell: (ASIntCell) cell
{
CGPoint result;
result.x = (cell.x * rfcColWidth / 2) + (cell.y * rfcColWidth / 2);
result.y = (cell.y * rfcRowHeight / 2) - (cell.x * rfcRowHeight / 2);
return result;
}
As of March 30, 2012, I have tried and failed to get the sloonz fork on GitHub to open images. I got it to compile ok, but it didn't actually work. I also tried building gohlke's library, and it compiled also but failed to open any images. Someone mentioned PythonMagick above, but it only compiles on Windows. See PythonMagick on the wxPython wiki.
PIL was last updated in 2009, and while it's website says they are working on a Python 3 port, it's been 3 years, and the mailing list has gone cold.
To solve my Python 3 image manipulation problem, I am using subprocess.call()
to execute ImageMagick shell commands. This method works.
As others have pointed out you need the quotes, but I just want to point out that there's a shorthand method of writing this same line of code
var htmlString="<?=$htmlString?>";
See you can leave out the "php echo" stuff and replace it with a simple "=".
You should use a with statement to qualify both your Rows
and Columns
counts. This will prevent any errors while working with older pre 2007 and newer 2007 Excel Workbooks.
Last Column
With Sheets("Sheet2")
.Cells(1, .Columns.Count).End(xlToLeft).Column
End With
Last Row
With Sheets("Sheet2")
.Range("A" & .Rows.Count).End(xlUp).Row
End With
Or
With Sheets("Sheet2")
.Cells(.Rows.Count, 1).End(xlUp).Row
End With
For Python:
import sys
sys.version
For Django (as mentioned by others here):
import django
django.get_version()
The potential problem with simply checking the version, is that versions get upgraded and so the code can go out of date. You want to make sure that '1.7' < '1.7.1' < '1.7.5' < '1.7.10'. A normal string comparison would fail in the last comparison:
>>> '1.7.5' < '1.7.10'
False
The solution is to use StrictVersion from distutils.
>>> from distutils.version import StrictVersion
>>> StrictVersion('1.7.5') < StrictVersion('1.7.10')
True
Another way:
Checkout the branch you want to revert, then reset your local working copy back to the commit that you want to be the latest one on the remote server (everything after it will go bye-bye). To do this, in SourceTree, I right-clicked on the and selected "Reset BRANCHNAME to this commit".
Then navigate to your repository's local directory and run this command:
git -c diff.mnemonicprefix=false -c core.quotepath=false push -v -f -- tags REPOSITORY_NAME BRANCHNAME:BRANCHNAME
This will erase all commits after the current one in your local repository but only for that one branch.
Googling gives me this:
Command A & Command B
Execute Command A, then execute Command B (no evaluation of anything)
Command A | Command B
Execute Command A, and redirect all its output into the input of Command B
Command A && Command B
Execute Command A, evaluate the errorlevel after running and if the exit code (errorlevel) is 0, only then execute Command B
Command A || Command B
Execute Command A, evaluate the exit code of this command and if it's anything but 0, only then execute Command B
From git 2.10 upwards it is also possible to use the gitconfig sshCommand setting. Docs state :
If this variable is set, git fetch and git push will use the specified command instead of ssh when they need to connect to a remote system. The command is in the same form as the GIT_SSH_COMMAND environment variable and is overridden when the environment variable is set.
An usage example would be: git config core.sshCommand "ssh -i ~/.ssh/[insert_your_keyname]
In some cases this doesn't work because ssh_config overriding the command, in this case try ssh -i ~/.ssh/[insert_your_keyname] -F /dev/null
to not use the ssh_config.
GROUP BY DATE(date_time_column)
If Your Window pc, you may try this, it's also for STS:
Ctrl + win + Alt + Down :: Copy current line or selected line to below
Ctrl + win + Alt + Up :: Copy current line or selected line to above
The above answers are great, but as most of what I've seen, don't stress the distinction enough for people like me.
Also, people tend to get "too Pythonic" by putting definitions like "X is an object that has __foo__()
method" before. Such definitions are correct--they are based on duck-typing philosophy, but the focus on methods tends to get between when trying to understand the concept in its simplicity.
So I add my version.
In natural language,
In Python,
iterable is an object that is, well, iterable, which simply put, means that
it can be used in iteration, e.g. with a for
loop. How? By using iterator.
I'll explain below.
... while iterator is an object that defines how to actually do the
iteration--specifically what is the next element. That's why it must have
next()
method.
Iterators are themselves also iterable, with the distinction that their __iter__()
method returns the same object (self
), regardless of whether or not its items have been consumed by previous calls to next()
.
So what does Python interpreter think when it sees for x in obj:
statement?
Look, a
for
loop. Looks like a job for an iterator... Let's get one. ... There's thisobj
guy, so let's ask him."Mr.
obj
, do you have your iterator?" (... callsiter(obj)
, which callsobj.__iter__()
, which happily hands out a shiny new iterator_i
.)OK, that was easy... Let's start iterating then. (
x = _i.next()
...x = _i.next()
...)
Since Mr. obj
succeeded in this test (by having certain method returning a valid iterator), we reward him with adjective: you can now call him "iterable Mr. obj
".
However, in simple cases, you don't normally benefit from having iterator and iterable separately. So you define only one object, which is also its own iterator. (Python does not really care that _i
handed out by obj
wasn't all that shiny, but just the obj
itself.)
This is why in most examples I've seen (and what had been confusing me over and over), you can see:
class IterableExample(object):
def __iter__(self):
return self
def next(self):
pass
instead of
class Iterator(object):
def next(self):
pass
class Iterable(object):
def __iter__(self):
return Iterator()
There are cases, though, when you can benefit from having iterator separated from the iterable, such as when you want to have one row of items, but more "cursors". For example when you want to work with "current" and "forthcoming" elements, you can have separate iterators for both. Or multiple threads pulling from a huge list: each can have its own iterator to traverse over all items. See @Raymond's and @glglgl's answers above.
Imagine what you could do:
class SmartIterableExample(object):
def create_iterator(self):
# An amazingly powerful yet simple way to create arbitrary
# iterator, utilizing object state (or not, if you are fan
# of functional), magic and nuclear waste--no kittens hurt.
pass # don't forget to add the next() method
def __iter__(self):
return self.create_iterator()
Notes:
I'll repeat again: iterator is not iterable. Iterator cannot be used as
a "source" in for
loop. What for
loop primarily needs is __iter__()
(that returns something with next()
).
Of course, for
is not the only iteration loop, so above applies to some other
constructs as well (while
...).
Iterator's next()
can throw StopIteration to stop iteration. Does not have to,
though, it can iterate forever or use other means.
In the above "thought process", _i
does not really exist. I've made up that name.
There's a small change in Python 3.x: next()
method (not the built-in) now
must be called __next__()
. Yes, it should have been like that all along.
You can also think of it like this: iterable has the data, iterator pulls the next item
Disclaimer: I'm not a developer of any Python interpreter, so I don't really know what the interpreter "thinks". The musings above are solely demonstration of how I understand the topic from other explanations, experiments and real-life experience of a Python newbie.
Using shell module (idempotent too):
- shell: /bin/rm -rf /home/mydata/web/*
If there are dot/hidden files:
- shell: /bin/rm -rf /home/mydata/web/* /home/mydata/web/.*
Cleanest solution if you don't care about creation date and owner/permissions:
- file: path=/home/mydata/web state=absent
- file: path=/home/mydata/web state=directory
Instance variable is the variable declared inside a class, but outside a method: something like:
class IronMan {
/** These are all instance variables **/
public String realName;
public String[] superPowers;
public int age;
/** Getters and setters here **/
}
Now this IronMan Class can be instantiated in another class to use these variables. Something like:
class Avengers {
public static void main(String[] a) {
IronMan ironman = new IronMan();
ironman.realName = "Tony Stark";
// or
ironman.setAge(30);
}
}
This is how we use the instance variables. Shameless plug: This example was pulled from this free e-book here here.
DELETE FROM konta WHERE taken <> '';
Go File -> New Project.
Select Web under Visual C#.
Select ASP.NET Web Application
Click OK.
Select MVC.
Click OK.
In the source root:
git reset ./ HEAD <--un-stage any staged changes
git checkout ./ <--discard any unstaged changes
Sorry for I did not explain my answer really well at beginning. There is another way to add an new column to an existing dataframe. 1st step, make a new empty data frame (with all the columns in your data frame, plus a new or few columns you want to add) called df_temp 2nd step, combine the df_temp and your data frame.
df_temp = pd.DataFrame(columns=(df_null.columns.tolist() + ['empty']))
df = pd.concat([df_temp, df])
It might be the best solution, but it is another way to think about this question.
the reason of I am using this method is because I am get this warning all the time:
: SettingWithCopyWarning:
A value is trying to be set on a copy of a slice from a DataFrame.
Try using .loc[row_indexer,col_indexer] = value instead
See the caveats in the documentation: https://pandas.pydata.org/pandas-docs/stable/user_guide/indexing.html#returning-a-view-versus-a-copy
df["empty1"], df["empty2"] = [np.nan, ""]
great I found the way to disable the Warning
pd.options.mode.chained_assignment = None
You can do it programatically:
public class ActivityName extends Activity {
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
// remove title
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.main);
}
}
Or you can do it via your AndroidManifest.xml
file:
<activity android:name=".ActivityName"
android:label="@string/app_name"
android:theme="@android:style/Theme.NoTitleBar.Fullscreen"/>
Edit:
If you are using AppCompatActivity then you need to add new theme
<style name="Theme.AppCompat.Light.NoActionBar.FullScreen" parent="@style/Theme.AppCompat.Light.NoActionBar">
<item name="android:windowNoTitle">true</item>
<item name="android:windowActionBar">false</item>
<item name="android:windowFullscreen">true</item>
<item name="android:windowContentOverlay">@null</item>
</style>
and then use it.
<activity android:name=".ActivityName"
android:label="@string/app_name"
android:theme="@style/Theme.AppCompat.Light.NoActionBar.FullScreen"/>
Just use the length
property of a JavaScript
array like so:
$scope.names.length
Also, I don't see a starting <script>
tag in your code.
If you want the length inside your view, do it like so:
{{ names.length }}
The following worked for Laravel 7.x (and should probably work for any other version as well given the nature of the issue).
npm uninstall --save-dev cross-env
npm install -g cross-env
Just moving cross-env from being a local devDependency to a globally available package.
You could use the CSS calc
parameter to calculate the height dynamically like so:
.dynamic-height {_x000D_
color: #000;_x000D_
font-size: 12px;_x000D_
margin-top: calc(100% - 10px);_x000D_
text-align: left;_x000D_
}
_x000D_
<div class='dynamic-height'>_x000D_
<p>Lorem ipsum dolor sit amet, consectetuer adipiscing elit. Aenean commodo ligula eget dolor. Aenean massa. Cum sociis natoque penatibus et magnis dis parturient montes, nascetur ridiculus mus. Donec quam felis, ultricies nec, pellentesque eu, pretium quis, sem.</p>_x000D_
</div>
_x000D_
If you are posting to a index.php file in a directory for example /api/index.php make sure in your form you specify the full directory to the file e.g
This
<form method="post" action="/api/index.php">
</form>
OR
<form method="post" action="/api/">
</form>
works.
But this fails
<form method="post" action="/api">
</form>
Ran into this error after updating a variety of Nuget packages. Check your Visual Studio Error List (or build output) for a warning similar to the following:
Found conflicts between different versions of the same dependent assembly. In Visual Studio, double-click this warning (or select it and press Enter) to fix the conflicts; otherwise, add the following binding redirects to the "runtime" node in the application configuration file:
...
Double-clicking this warning in Visual Studio automatically adjusted a variety of bindingRedirect
package versions in my web.config and resolved the error.
Use InvariantCulture. The decimal separator is always "." eventually you can replace "," by "." When you display the result , use your local culture. But internally use always invariant culture
TryParse does not allway work as we would expect There are change request in .net in this area:
I found the most working solution to this problem.
Just edit your .htaccess
in the root folder and write the following code. Nothing else required
RewriteEngine on
RewriteCond %{REQUEST_URI} !^public
RewriteRule ^(.*)$ public/$1 [L]
<IfModule php7_module>
php_flag display_errors Off
php_value max_execution_time 30
php_value max_input_time 60
php_value max_input_vars 1000
php_value memory_limit -1
php_value post_max_size 8M
php_value session.gc_maxlifetime 1440
php_value session.save_path "/var/cpanel/php/sessions/ea-php71"
php_value upload_max_filesize 2M
php_flag zlib.output_compression Off
</IfModule>
Native Node.js solution is:
const {execSync} = require('child_process');
const result = execSync('node -v'); // this do the trick
Just be aware that some commands returns Buffer
instead of string
. And if you need string
just add encoding
to execSync options:
const result = execSync('git rev-parse HEAD', {encoding: 'utf8'});
... and it is also good to have timeout on sync exec:
const result = execSync('git rev-parse HEAD', {encoding: 'utf8', timeout: 10000});
@S-Lott gives the right procedure, but expanding on the Unicode issues, the Python interpreter can provide more insights.
Jon Skeet is right (unusual) about the codecs
module - it contains byte strings:
>>> import codecs
>>> codecs.BOM
'\xff\xfe'
>>> codecs.BOM_UTF8
'\xef\xbb\xbf'
>>>
Picking another nit, the BOM
has a standard Unicode name, and it can be entered as:
>>> bom= u"\N{ZERO WIDTH NO-BREAK SPACE}"
>>> bom
u'\ufeff'
It is also accessible via unicodedata
:
>>> import unicodedata
>>> unicodedata.lookup('ZERO WIDTH NO-BREAK SPACE')
u'\ufeff'
>>>
The Replace
operator means Replace something with something else; do not be confused with removal functionality.
Also you should send the result processed by the operator to a variable or to another operator. Neither .Replace()
, nor -replace
modifies the original variable.
To remove all spaces, use 'Replace any space symbol with empty string'
$string = $string -replace '\s',''
To remove all spaces at the beginning and end of the line, and replace all double-and-more-spaces or tab symbols to spacebar symbol, use
$string = $string -replace '(^\s+|\s+$)','' -replace '\s+',' '
or the more native System.String
method
$string = $string.Trim()
Regexp is preferred, because ' '
means only 'spacebar' symbol, and '\s'
means 'spacebar, tab and other space symbols'. Note that $string.Replace()
does 'Normal' replace, and $string -replace
does RegEx replace, which is more heavy but more functional.
Note that RegEx have some special symbols like dot (.
), braces ([]()
), slashes (\
), hats (^
), mathematical signs (+-
) or dollar signs ($
) that need do be escaped. ( 'my.space.com' -replace '\.','-'
=> 'my-space-com'
. A dollar sign with a number (ex $1
) must be used on a right part with care
'2033' -replace '(\d+)',$( 'Data: $1')
Data: 2033
UPDATE: You can also use $str = $str.Trim()
, along with TrimEnd()
and TrimStart()
. Read more at System.String MSDN page.
If you using >5 version of laravel then you will use.
composer require laravel/ui --dev **or** composer require laravel/ui
And then
php artisan ui:auth
Just to add to Alex Poole's answer, here is how you do the date and time:
TO_DATE('31/DEC/2017 12:59:59', 'dd/mm/yyyy hh24:mi:ss')
If you have Cygwin installed (which I strongly recommend for a variety of reasons), you could use the 'file' utility on the DLL
file <filename>
which would give an output like this:
icuuc36.dll: MS-DOS executable PE for MS Windows (DLL) (GUI) Intel 80386 32-bit
You cannot set or read cookies on CORS requests through JavaScript. Although CORS allows cross-origin requests, the cookies are still subject to the browser's same-origin policy, which means only pages from the same origin can read/write the cookie. withCredentials
only means that any cookies set by the remote host are sent to that remote host. You will have to set the cookie from the remote server by using the Set-Cookie
header.
with open(fpath, 'rb') as myfile:
fstr = myfile.read()
I encounter this error because the file is empty. This answer may not a correct answer for this question but should give developers a hint like me.
for python 3.4.2 I found the following will work:
import urllib.request
import json
body = {'ids': [12, 14, 50]}
myurl = "http://www.testmycode.com"
req = urllib.request.Request(myurl)
req.add_header('Content-Type', 'application/json; charset=utf-8')
jsondata = json.dumps(body)
jsondataasbytes = jsondata.encode('utf-8') # needs to be bytes
req.add_header('Content-Length', len(jsondataasbytes))
response = urllib.request.urlopen(req, jsondataasbytes)
My ajax never gets fired until I wrapped the whole thing in
setTimeout(function(){ .... }, 3000);
I was using it in mounted section of Vue. it needs more time.
I am newbie and most of the code is from google search. I got my pdf download working with the code below (trial and error play). Thank you for code tips (xhrFields) above.
$.ajax({
cache: false,
type: 'POST',
url: 'yourURL',
contentType: false,
processData: false,
data: yourdata,
//xhrFields is what did the trick to read the blob to pdf
xhrFields: {
responseType: 'blob'
},
success: function (response, status, xhr) {
var filename = "";
var disposition = xhr.getResponseHeader('Content-Disposition');
if (disposition) {
var filenameRegex = /filename[^;=\n]*=((['"]).*?\2|[^;\n]*)/;
var matches = filenameRegex.exec(disposition);
if (matches !== null && matches[1]) filename = matches[1].replace(/['"]/g, '');
}
var linkelem = document.createElement('a');
try {
var blob = new Blob([response], { type: 'application/octet-stream' });
if (typeof window.navigator.msSaveBlob !== 'undefined') {
// IE workaround for "HTML7007: One or more blob URLs were revoked by closing the blob for which they were created. These URLs will no longer resolve as the data backing the URL has been freed."
window.navigator.msSaveBlob(blob, filename);
} else {
var URL = window.URL || window.webkitURL;
var downloadUrl = URL.createObjectURL(blob);
if (filename) {
// use HTML5 a[download] attribute to specify filename
var a = document.createElement("a");
// safari doesn't support this yet
if (typeof a.download === 'undefined') {
window.location = downloadUrl;
} else {
a.href = downloadUrl;
a.download = filename;
document.body.appendChild(a);
a.target = "_blank";
a.click();
}
} else {
window.location = downloadUrl;
}
}
} catch (ex) {
console.log(ex);
}
}
});
Linkage determines whether identifiers that have identical names refer to the same object, function, or other entity, even if those identifiers appear in different translation units. The linkage of an identifier depends on how it was declared. There are three types of linkages:
C++ only : You can also have linkage between C++ and non-C++ code fragments, which is called language linkage.
Source :IBM Program Linkage
Looks like simply putting the link like this
http://dl.google.com/android/ndk/android-ndk-r7c-windows.zip
on the address bar of your browser
The revision names (r7c, r8c etc.) could be found from the ndk download page
Based on @lijat, here is a simplified implementation. In my spring-based application I simply load this as a bean.
public static void configureLog4jFromSystemProperties()
{
final String LOGGER_PREFIX = "log4j.logger.";
for(String propertyName : System.getProperties().stringPropertyNames())
{
if (propertyName.startsWith(LOGGER_PREFIX)) {
String loggerName = propertyName.substring(LOGGER_PREFIX.length());
String levelName = System.getProperty(propertyName, "");
Level level = Level.toLevel(levelName); // defaults to DEBUG
if (!"".equals(levelName) && !levelName.toUpperCase().equals(level.toString())) {
logger.error("Skipping unrecognized log4j log level " + levelName + ": -D" + propertyName + "=" + levelName);
continue;
}
logger.info("Setting " + loggerName + " => " + level.toString());
Logger.getLogger(loggerName).setLevel(level);
}
}
}
Encode URL String
var url = $(location).attr('href'); //get current url
//OR
var url = 'folder/index.html?param=#23dd&noob=yes'; //or specify one
var encodedUrl = encodeURIComponent(url);
console.log(encodedUrl);
//outputs folder%2Findex.html%3Fparam%3D%2323dd%26noob%3Dyes
for more info go http://www.sitepoint.com/jquery-decode-url-string
Lists and Maps are different data structures. Maps are used for when you want to associate a key with a value and Lists are an ordered collection.
Map is an interface in the Java Collection Framework and a HashMap is one implementation of the Map interface. HashMap are efficient for locating a value based on a key and inserting and deleting values based on a key. The entries of a HashMap are not ordered.
ArrayList and LinkedList are an implementation of the List interface. LinkedList provides sequential access and is generally more efficient at inserting and deleting elements in the list, however, it is it less efficient at accessing elements in a list. ArrayList provides random access and is more efficient at accessing elements but is generally slower at inserting and deleting elements.
Since the question of multiple inheritance (MI) pops up from time to time, I'd like to add an approach which addresses some problems with the composition pattern.
I build upon the IFirst
, ISecond
,First
, Second
, FirstAndSecond
approach, as it was presented in the question. I reduce sample code to IFirst
, since the pattern stays the same regardless of the number of interfaces / MI base classes.
Lets assume, that with MI First
and Second
would both derive from the same base class BaseClass
, using only public interface elements from BaseClass
This can be expressed, by adding a container reference to BaseClass
in the First
and Second
implementation:
class First : IFirst {
private BaseClass ContainerInstance;
First(BaseClass container) { ContainerInstance = container; }
public void FirstMethod() { Console.WriteLine("First"); ContainerInstance.DoStuff(); }
}
...
Things become more complicated, when protected interface elements from BaseClass
are referenced or when First
and Second
would be abstract classes in MI, requiring their subclasses to implement some abstract parts.
class BaseClass {
protected void DoStuff();
}
abstract class First : IFirst {
public void FirstMethod() { DoStuff(); DoSubClassStuff(); }
protected abstract void DoStuff(); // base class reference in MI
protected abstract void DoSubClassStuff(); // sub class responsibility
}
C# allows nested classes to access protected/private elements of their containing classes, so this can be used to link the abstract bits from the First
implementation.
class FirstAndSecond : BaseClass, IFirst, ISecond {
// link interface
private class PartFirst : First {
private FirstAndSecond ContainerInstance;
public PartFirst(FirstAndSecond container) {
ContainerInstance = container;
}
// forwarded references to emulate access as it would be with MI
protected override void DoStuff() { ContainerInstance.DoStuff(); }
protected override void DoSubClassStuff() { ContainerInstance.DoSubClassStuff(); }
}
private IFirst partFirstInstance; // composition object
public FirstMethod() { partFirstInstance.FirstMethod(); } // forwarded implementation
public FirstAndSecond() {
partFirstInstance = new PartFirst(this); // composition in constructor
}
// same stuff for Second
//...
// implementation of DoSubClassStuff
private void DoSubClassStuff() { Console.WriteLine("Private method accessed"); }
}
There is quite some boilerplate involved, but if the actual implementation of FirstMethod and SecondMethod are sufficiently complex and the amount of accessed private/protected methods is moderate, then this pattern may help to overcome lacking multiple inheritance.
In Java, null
only applies to object references; since boolean
is a primitive type, it cannot be assigned null
.
It's hard to get context from your example, but I'm guessing that if hideInNav
is not in the object returned by getProperties()
, the (default value?) you've indicated will be false
. I suspect this is the bug that you're seeing, as false
is not equal to null
, so hideNavigation
is getting the empty string?
You might get some better answers with a bit more context to your code sample.
I got this error when I created an 'Empty' console application in Visual Studio 2015. I re-created the application, leaving the 'Empty' box unchecked, it added all of the necessary libraries.
First you will have a config file in /etc/mongodb.conf
, therefore this sounds like a homebrew install which will use some more standardized paths. The whole /data/db/
thing is referenced in a lot of manual install documentation.
So basically from your log the server is not running, it's shutting down, so there is nothing for the shell to connect to. Seems like you have had some unclean shutdowns/restarts which has led to the inconsistency.
Clear the files in the journal /usr/local/var/mongodb/journal/
on your config.
Also:
sudo rm /var/lib/mongodb/mongod.lock
Just in case, even though that part looks clean. And then restart.
In case you want to use str()
and a custom str method. This also works for repr.
class TypeProxy:
def __init__(self, _type):
self._type = _type
def __call__(self, *args, **kwargs):
return self._type(*args, **kwargs)
def __str__(self):
return self._type.__name__
def __repr__(self):
return "TypeProxy(%s)" % (repr(self._type),)
>>> str(TypeProxy(str))
'str'
>>> str(TypeProxy(type("")))
'str'
You could do it on the client with moment-timezone and send the value to server; sample usage:
> moment.tz.guess()
"America/Asuncion"
You can iterate over the object to get the keys or values:
function numKeys(obj)
{
var count = 0;
for(var prop in obj)
{
count++;
}
return count;
}
It looks like a "spelling mistake" but just want to point out that your example is invalid syntax, should be
var object = {"key1":"value1","key2":"value2","key3":"value3"};
Git has two types of branches: local
and remote
. To use git pull
and git push
as you'd like, you have to tell your local branch (my_test
) which remote branch it's tracking. In typical Git fashion this can be done in both the config file and with commands.
Commands
Make sure you're on your master
branch with
1)git checkout master
then create the new branch with
2)git branch --track my_test origin/my_test
and check it out with
3)git checkout my_test
.
You can then push
and pull
without specifying which local and remote.
However if you've already created the branch then you can use the -u
switch to tell git's push
and pull
you'd like to use the specified local and remote branches from now on, like so:
git pull -u my_test origin/my_test
git push -u my_test origin/my_test
Config
The commands to setup remote branch tracking are fairly straight forward but I'm listing the config way as well as I find it easier if I'm setting up a bunch of tracking branches. Using your favourite editor open up your project's .git/config
and add the following to the bottom.
[remote "origin"]
url = [email protected]:username/repo.git
fetch = +refs/heads/*:refs/remotes/origin/*
[branch "my_test"]
remote = origin
merge = refs/heads/my_test
This specifies a remote called origin
, in this case a GitHub style one, and then tells the branch my_test
to use it as it's remote.
You can find something very similar to this in the config after running the commands above.
Some useful resources:
Don't. Leave them as Java and use IKVM to convert them to .Net DLLs.
It's due to operator precidence. Try changing it to:
while(($file = readdir($handle)) !== FALSE)
{
$results_array[] = $file;
}
closedir($handle);
Try this:
if( $this->container->get('security.context')->isGranted('IS_AUTHENTICATED_FULLY') ){
// authenticated (NON anonymous)
}
Further information:
"Anonymous users are technically authenticated, meaning that the isAuthenticated() method of an anonymous user object will return true. To check if your user is actually authenticated, check for the IS_AUTHENTICATED_FULLY role."
I found the following commands will all return the full path of the parent directory of a Python 3.6 script.
Python 3.6 Script:
#!/usr/bin/env python3.6
# -*- coding: utf-8 -*-
from pathlib import Path
#Get the absolute path of a Python3.6 script
dir1 = Path().resolve() #Make the path absolute, resolving any symlinks.
dir2 = Path().absolute() #See @RonKalian answer
dir3 = Path(__file__).parent.absolute() #See @Arminius answer
print(f'dir1={dir1}\ndir2={dir2}\ndir3={dir3}')
Explanation links: .resolve(), .absolute(), Path(file).parent().absolute()
In my case, it was working fine at home, but it was failing in office, the moment I connect to office network.
So modified the config/server.properties listeners=PLAINTEXT://:9092 to listeners=PLAINTEXT://localhost:9092
In my case, I was getting while describing the Consumer Group
A note from Microsoft concerning SQL Server:
A FOREIGN KEY constraint does not have to be linked only to a PRIMARY KEY constraint in another table; it can also be defined to reference the columns of a UNIQUE constraint in another table.
so, I'll use terms describing dependency instead of the conventional primary/foreign relationship terms.
When referencing the PRIMARY KEY of the independent (parent) table by the similarly named column(s) in the dependent (child) table, I omit the column name(s):
FK_ChildTable_ParentTable
When referencing other columns, or the column names vary between the two tables, or just to be explicit:
FK_ChildTable_childColumn_ParentTable_parentColumn
/**
* @param filePath
* @param fs
* @return list of absolute file path present in given path
* @throws FileNotFoundException
* @throws IOException
*/
public static List<String> getAllFilePath(Path filePath, FileSystem fs) throws FileNotFoundException, IOException {
List<String> fileList = new ArrayList<String>();
FileStatus[] fileStatus = fs.listStatus(filePath);
for (FileStatus fileStat : fileStatus) {
if (fileStat.isDirectory()) {
fileList.addAll(getAllFilePath(fileStat.getPath(), fs));
} else {
fileList.add(fileStat.getPath().toString());
}
}
return fileList;
}
Quick Example : Suppose you have the following file structure:
a -> b
-> c -> d
-> e
-> d -> f
Using the code above, you get:
a/b
a/c/d
a/c/e
a/d/f
If you want only the leaf (i.e. fileNames), use the following code in else
block :
...
} else {
String fileName = fileStat.getPath().toString();
fileList.add(fileName.substring(fileName.lastIndexOf("/") + 1));
}
This will give:
b
d
e
f
Materialized views are disk based and are updated periodically based upon the query definition.
Views are virtual only and run the query definition each time they are accessed.
This should technically be achievable using window.location.reload()
:
HTML:
<button (click)="refresh()">Refresh</button>
TS:
refresh(): void {
window.location.reload();
}
Update:
Here is a basic StackBlitz example showing the refresh in action. Notice the URL on "/hello" path is retained when window.location.reload()
is executed.
You can do it in two lines by first plotting the bar chart and then setting the appropriate ticks:
import matplotlib.pyplot as plt
D = {u'Label1':26, u'Label2': 17, u'Label3':30}
plt.bar(range(len(D)), list(D.values()), align='center')
plt.xticks(range(len(D)), list(D.keys()))
# # for python 2.x:
# plt.bar(range(len(D)), D.values(), align='center') # python 2.x
# plt.xticks(range(len(D)), D.keys()) # in python 2.x
plt.show()
Note that the penultimate line should read plt.xticks(range(len(D)), list(D.keys()))
in python3, because D.keys()
returns a generator, which matplotlib cannot use directly.
The java documentation suggests to make use of Calendar class instead of this deprecated way Here is the sample code to set up the calendar object
Calendar calendar = Calendar.getInstance();
calendar.setTime(new Date());
Here is the sample code to get the year, month, etc.
System.out.println(calendar.get(Calendar.YEAR));
System.out.println(calendar.get(Calendar.MONTH));
Calendar also has support for many other useful information like, TIME, DAY_OF_MONTH, etc. Here the documentation listing all of them Please note that the month are 0 based. January is 0th month.
If the functions are re-written with completely different variables and we call id on them, it then illustrates the point well. I didn't get this at first and read jfs' post with the great explanation, so I tried to understand/convince myself:
def f(y, z):
y = 2
z.append(4)
print ('In f(): ', id(y), id(z))
def main():
n = 1
x = [0,1,2,3]
print ('Before in main:', n, x,id(n),id(x))
f(n, x)
print ('After in main:', n, x,id(n),id(x))
main()
Before in main: 1 [0, 1, 2, 3] 94635800628352 139808499830024
In f(): 94635800628384 139808499830024
After in main: 1 [0, 1, 2, 3, 4] 94635800628352 139808499830024
z and x have the same id. Just different tags for the same underlying structure as the article says.
One of the advantages of map, filter and reduce is how legible they become when you "chain" them together to do something complex. However, the built-in syntax isn't legible and is all "backwards". So, I suggest using the PyFunctional
package (https://pypi.org/project/PyFunctional/).
Here's a comparison of the two:
flight_destinations_dict = {'NY': {'London', 'Rome'}, 'Berlin': {'NY'}}
PyFunctional version
Very legible syntax. You can say:
"I have a sequence of flight destinations. Out of which I want to get the dict key if city is in the dict values. Finally, filter out the empty lists I created in the process."
from functional import seq # PyFunctional package to allow easier syntax
def find_return_flights_PYFUNCTIONAL_SYNTAX(city, flight_destinations_dict):
return seq(flight_destinations_dict.items()) \
.map(lambda x: x[0] if city in x[1] else []) \
.filter(lambda x: x != []) \
Default Python version
It's all backwards. You need to say:
"OK, so, there's a list. I want to filter empty lists out of it. Why? Because I first got the dict key if the city was in the dict values. Oh, the list I'm doing this to is flight_destinations_dict."
def find_return_flights_DEFAULT_SYNTAX(city, flight_destinations_dict):
return list(
filter(lambda x: x != [],
map(lambda x: x[0] if city in x[1] else [], flight_destinations_dict.items())
)
)
You cannot save anything inside the app's bundle, but you can use +[NSData dataWithContentsOfURL:]
to store the image in your app's documents directory, e.g.:
NSData *imageData = [NSData dataWithContentsOfURL:myImageURL];
NSString *imagePath = [[NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES) objectAtIndex:0] stringByAppendingPathComponent:@"/myImage.png"];
[imageData writeToFile:imagePath atomically:YES];
Not exactly permanent, but it stays there at least until the user deletes the app.
http://www.gnu.org/software/make/manual/make.html#Recursion
subsystem:
cd subdir && $(MAKE)
or, equivalently, this :
subsystem:
$(MAKE) -C subdir
Put the line in a stringstream and extract word by word back:
#include <iostream>
#include <sstream>
using namespace std;
int main()
{
string t;
getline(cin,t);
istringstream iss(t);
string word;
while(iss >> word) {
/* do stuff with word */
}
}
Of course, you can just skip the getline part and read word by word from cin
directly.
And here you can read why is using namespace std
considered bad practice.
Problem solved!
I was having all my website set up first in XAMMP, then I had to transfer it to LAMP, in a SUSE installation of LAMP, where I got this error.
The problem is that these parameters in the database.php file should not be initialised. Just leave username and password blank. That's just it.
(My first and lame guess would be that's because of old version of mysql, as built-in installations come with older versions.
If none of the answers worked out for you, try this,
Hyper-V might not be disabled If you have windows 10 features such as Device Guard and Credential Guard is enabled, it can prevent Hyper-V from being completely disabled.
The Device Guard and Credential Guard hardware readiness tool released by Microsoft can disable the said Windows 10 features along with Hyper-V:
Download it here, https://www.microsoft.com/en-us/download/details.aspx?id=53337
Download the latest version of the Device Guard and Credential Guard hardware readiness tool. Unzip Open the Command Prompt using Run as administrator @powershell -ExecutionPolicy RemoteSigned -Command "X:\path\to\dgreadiness_v3.6\DG_Readiness_Tool_v3.6.ps1 -Disable" Reboot.
In addition to install the build tools and restart the update manager I also had to restart Eclipse to make this work.
In case you need HORIZONTAL SPLIT resize as well:
The command is the same for all splits, just the parameter changes:
-
+
instead of <
>
Examples:
Decrease horizontal size by 10 columns
:10winc -
Increase horizontal size by 30 columns
:30winc +
or within normal mode:
Horizontal splits
10 CTRL+w -
30 CTRL+w +
Vertical splits
10 CTRL+w < (decrease)
30 CTRL+w > (increase)
You can set the context to be poster
or manually set fig_size
.
import numpy as np
import seaborn as sns
import matplotlib.pyplot as plt
np.random.seed(0)
n, p = 40, 8
d = np.random.normal(0, 2, (n, p))
d += np.log(np.arange(1, p + 1)) * -5 + 10
# plot
sns.set_style('ticks')
fig, ax = plt.subplots()
# the size of A4 paper
fig.set_size_inches(11.7, 8.27)
sns.violinplot(data=d, inner="points", ax=ax)
sns.despine()
fig.savefig('example.png')
This helper class manages parameters for GET and POST requests:
import java.io.UnsupportedEncodingException;
import java.util.Iterator;
import java.util.Map;
import org.json.JSONException;
import org.json.JSONObject;
import com.android.volley.NetworkResponse;
import com.android.volley.ParseError;
import com.android.volley.Request;
import com.android.volley.Response;
import com.android.volley.Response.ErrorListener;
import com.android.volley.Response.Listener;
import com.android.volley.toolbox.HttpHeaderParser;
public class CustomRequest extends Request<JSONObject> {
private int mMethod;
private String mUrl;
private Map<String, String> mParams;
private Listener<JSONObject> mListener;
public CustomRequest(int method, String url, Map<String, String> params,
Listener<JSONObject> reponseListener, ErrorListener errorListener) {
super(method, url, errorListener);
this.mMethod = method;
this.mUrl = url;
this.mParams = params;
this.mListener = reponseListener;
}
@Override
public String getUrl() {
if(mMethod == Request.Method.GET) {
if(mParams != null) {
StringBuilder stringBuilder = new StringBuilder(mUrl);
Iterator<Map.Entry<String, String>> iterator = mParams.entrySet().iterator();
int i = 1;
while (iterator.hasNext()) {
Map.Entry<String, String> entry = iterator.next();
if (i == 1) {
stringBuilder.append("?" + entry.getKey() + "=" + entry.getValue());
} else {
stringBuilder.append("&" + entry.getKey() + "=" + entry.getValue());
}
iterator.remove(); // avoids a ConcurrentModificationException
i++;
}
mUrl = stringBuilder.toString();
}
}
return mUrl;
}
@Override
protected Map<String, String> getParams()
throws com.android.volley.AuthFailureError {
return mParams;
};
@Override
protected Response<JSONObject> parseNetworkResponse(NetworkResponse response) {
try {
String jsonString = new String(response.data,
HttpHeaderParser.parseCharset(response.headers));
return Response.success(new JSONObject(jsonString),
HttpHeaderParser.parseCacheHeaders(response));
} catch (UnsupportedEncodingException e) {
return Response.error(new ParseError(e));
} catch (JSONException je) {
return Response.error(new ParseError(je));
}
}
@Override
protected void deliverResponse(JSONObject response) {
// TODO Auto-generated method stub
mListener.onResponse(response);
}
}
Even easier is just to add the following annotations to the top of your class:
[Serializable, XmlRoot("user")]
public partial class User
{
}
MizardX's answer gives a good collection of multiple approaches.
This is what I came up with while thinking aloud:
mylist = [x for i,x in enumerate(mylist) if x not in mylist[i+1:]]
Add the following to the top of your file # coding=utf-8
If you go to the link in the error you can seen the reason why:
Defining the Encoding
Python will default to ASCII as standard encoding if no other encoding hints are given. To define a source code encoding, a magic comment must be placed into the source files either as first or second line in the file, such as: # coding=
If this occurs trying to delete a folder (on *nix) and Refresh does not help, open a terminal and look for a symlink below the folder you are trying to delete and remove this manually. This solved my issues.
I would really recommend anyone entering this subject to read Addy Osmani's free book:
"Learning JavaScript Design Patterns".
http://addyosmani.com/resources/essentialjsdesignpatterns/book/
This book helped me out immensely when I was starting into writing more maintainable JavaScript and I still use it as a reference. Have a look at his different module pattern implementations, he explains them really well.
Alright guys, I found it out! I didn't really need to change the java.library.path but the "Native library location" of sqljdbc.jar
This is the best answer I could find: https://stackoverflow.com/a/958074/2000342
It works now, thanks for the support!
SimpleDateFormat has a constructor which takes the locale, have you tried that?
http://java.sun.com/javase/6/docs/api/java/text/SimpleDateFormat.html
Something like
new SimpleDateFormat("your-pattern-here", Locale.getDefault());
Something I noticed was that I had "other_database" and "Other_Database" in my databases. That caused this problem as I actually had same reference in other database which caused this mysterious error!
The difference between do while (exit check) and while (entry check) is that while entering in do while it will not check but in while it will first check
The example is as such:
Program 1:
int a=10;
do{
System.out.println(a);
}
while(a<10);
//here the a is not less than 10 then also it will execute once as it will execute do while exiting it checks that a is not less than 10 so it will exit the loop
Program 2:
int b=0;
while(b<10)
{
System.out.println(b);
}
//here nothing will be printed as the value of b is not less than 10 and it will not let enter the loop and will exit
output Program 1:
10
output Program 2:
[nothing is printed]
note:
output of the program 1 and program 2 will be same if we assign a=0 and b=0 and also put a++; and b++; in the respective body of the program.
This error message is displayed if the path you pass to Bitmap.Save()
is invalid (folder doesn't exist etc).
If the string is from a trusted source, you could use eval
then JSON.stringify
the result. Like this:
var str = "{ hello: 'world', places: ['Africa', 'America', 'Asia', 'Australia'] }";
var json = JSON.stringify(eval("(" + str + ")"));
Note that when you eval
an object literal, it has to be wrapped in parentheses, otherwise the braces are parsed as a block instead of an object.
I also agree with the comments under the question that it would be much better to just encode the object in valid JSON to begin with and avoid having to parse, encode, then presumably parse it again. HTML supports single-quoted attributes (just be sure to HTML-encode any single quotes inside strings).
Wouldn't the compiler cache .length, and therefore it makes no difference if you are comparing 0 or .length? I guess this is very specific to the compiler or interpreter you are dealing with.
I would say if you are using a well optimised compiler or interpreter then you shouldn't worry about this, it is for the language developers to worry about.
You can find the .app file here:
~/Library/Developer/Xcode/DerivedData/{app name}/Build/Products/Deployment/
credit for path goes to this answer
SIDENOTE: I had a lot of fun trying to get this into my iPad after that. It worked however. Using Snow Leopard + Xcode 4.2 + iPad with IOS 5.1.1 :) - I used the iPhone configuration utility to get the app into the ipad (you have to add the app, then click on the device, then click "install" behind the app you just added in the "application library" of iphone configuration utility) and had to create a Distribution Provisioning Profile and get the WWDR certificate and finally change the build settings in Xcode after all the certificates were in place. See here
But after much fun I am now looking at my first app on my iPad :) - btw, for getting apps into the app store you need to create a app store Distribution Provisioning Profile, while for ad hoc installs like these you create an ad hoc one. There is a bit more to it, but I think these are the most important and tricky steps. Enjoy.
PS. Just remembered that you also have to set the build type (top left of Xcode) to "iOS device", otherwise it will never sign your application. So the path name above only has limited value: yes, it will have the .app file in it, but no you can't upload it (at least not using the iPhone configuration utility) since it is not code signed - you will get an "Could not copy validate signature" error. So change it to "iOS device" and build (remember to select the right certificates in the build section of Xcode as per the url info above). In that same build section, you can also set the "Installation Build Products Location" to a different path, so that you can determine where the .app (the one that is properly code signed) ends up.
Can use getElementsByTagName
var x = document.getElementsByTagName("title")[0];
alert(x.innerHTML)
// or
alert(x.textContent)
// or
document.querySelector('title')
Edits as suggested by Paul
Most recommended method is using wrapper function and spread operator together. For example, if you have initialized a state called name
like this,
const [names, setNames] = useState([])
You can push to this array like this,
setNames(names => [...names, newName])
Hope that helps.
Based upon which, IIS 7.5 Application Pool's identity use one of the following.
IIS AppPool\AppPoolName
and grant it Full control
. Replace "AppPoolName" with the name of your application pool (sometimes IIS_IUSRS
)Update based upon @Phil Hale comment:
Beware, if you're on a domain, your domain will be selected by default in the 'from location box'. Make sure to change that to "Local Computer". Change the location to "Local Computer" to view the app pool identities.
A 'fun' way to learn socket.io is to play BrowserQuest by mozilla and look at its source code :-)
Selecting is often unnecessary. Try this
Sub OneCell()
Sheets("Sheet2").range("B1:B3").value = Sheets("Sheet1").range("A1:A3").value
End Sub
add the -s
(silent) option to remove the progress meter, then redirect stderr to stdout to get verbose output on the same fd as the response body
curl -vs google.com 2>&1 | less
If you right Click the referenced assembly, you will see a property called Copy Local. If Copy Local is set to true, then the assembly should be included in the bin. However, there seams to be a problem with Visual studio, that sometimes it does not include the referenced dll in the bin folder... this is the workaround that worked for me:
I also had this problem and was able to solve it by enabling CORS support on the server. In my case it was an Azure server and it was easy: Enable CORS on Azure
So check for your server how it works and enable CORS. I didn't even need a browser plugin or proxy :)
Look at https://expressjs.com/en/resources/middleware/cors.html You have to use cors.
Install:
$ npm install cors
const cors = require('cors');
app.use(cors());
You have to put this code in your node server.
Use innerText
/textContent
:
var el = document.getElementById('*spaM4');
console.log(el.innerText || el.textContent);
Fiddle: http://jsfiddle.net/NeTgC/2/
Also, you could try to use ndarray.item()
, for example, arr.item((0, 0))
(rowid+colid to index) or arr.item(0)
(flatten index), its doc https://docs.scipy.org/doc/numpy/reference/generated/numpy.ndarray.item.html
The better pattern is to create a standalone BroadcastReceiver
. This insures that your app can respond to the broadcast, whether or not the Service
is running. In fact, using this pattern may remove the need for a constant-running Service
altogether.
Register the BroadcastReceiver
in your Manifest, and create a separate class/file for it.
Eg:
<receiver android:name=".FooReceiver" >
<intent-filter >
<action android:name="android.provider.Telephony.SMS_RECEIVED" />
</intent-filter>
</receiver>
When the receiver runs, you simply pass an Intent
(Bundle
) to the Service
, and respond to it in onStartCommand()
.
Eg:
public class FooReceiver extends BroadcastReceiver {
@Override
public void onReceive(Context context, Intent intent) {
// do your work quickly!
// then call context.startService();
}
}