Programs & Examples On #Soapfault

The SOAP Fault element is defined as part of the W3C SOAP specification. The SOAP Fault element is used to carry error information within a SOAP message.

SOAP PHP fault parsing WSDL: failed to load external entity?

If anyone has the same problem, one possible solution is to set the bindto stream context configuration parameter (assuming you're connecting from to

$context = [
    'socket' => [
        'bindto' => ''

$options = [
    'soapVersion' => SOAP_1_1,
    'stream_context' => stream_context_create($context)

$client = new Client('', $options);

SoapFault exception: Could not connect to host

This work for me

$opts = array(
  'ssl' => array('verify_peer' => false, 'verify_peer_name' => false)

if (!isset($this->soap_client)) {
  $this->soap_client = new SoapClient($this->WSDL, array(
    'soap_version'   => $this->soap_version,
    'location'       => $this->URL,
    'trace'          => 1,
    'exceptions'     => 0,
    'stream_context' => stream_context_create($opts)

Uncaught SoapFault exception: [HTTP] Error Fetching http headers

There is an issue in php version less than 5.2.6. You may need to upgrade the version of php.

Uncaught TypeError: Cannot use 'in' operator to search for 'length' in

The only solution that worked for me and $.each was definitely causing the error. so i used for loop and it's not throwing error anymore.

Example code

            type: 'GET',
            url: '',
            data: { get_param: 'value' },
            success: function (data) {
                for (var i = 0; i < data.length; ++i) {

#1146 - Table 'phpmyadmin.pma_recent' doesn't exist

"You have to run the create_tables.sql inside the examples/ folder on phpMyAdmin to create the tables needed for the advanced features. That or disable those features by commenting them on the config file".


Only to complete de choosed answer, this is the path to the examples/ directory on Ubuntu.

Just use the import feature and choose "create_tables.sql.gz".

Combining multiple condition in single case statement in Sql Server

You can put the condition after the WHEN clause, like so:

    WHEN PAT_ENT.SCR_DT is not null and PAT_ENTRY.ELIGIBILITY is null THEN 'Favor'
    WHEN PAT_ENT.SCR_DT is not null and PAT_ENTRY.EL = 'No' THEN 'Error'
    WHEN PAT_ENTRY.EL = 'Yes' and ISNULL(DS.DES, 'OFF') = 'OFF' THEN 'Active'
    WHEN DS.DES = 'N' THEN 'Early Term'
    WHEN DS.DES = 'Y' THEN 'Complete'

Of course, the argument could be made that complex rules like this belong in your business logic layer, not in a stored procedure in the database...

UIScrollView Scrollable Content Size Ambiguity

People who are struggling with uiscrollview not scrolling just set your content view's bottom constraint with your last view's bottom layout (which is inside of your content view). Do not forget to remove center Y constraint.

Rest all the constraints are same as defined above. Scrollview only concerned about getting maximum height from its content view, and we are setting it as last view's bottom constraint, which means scrollview automatically will change its content offset.

In my case last view was UILable with no of lines property = 0(which automatically adjust its height depending upon its content) so it dynamically increase uilable's height and eventually our scrollable area increases because of uilable's bottom layout is aligned with our content view's bottom, which forces scrollview to increase it's content offset.

What file uses .md extension and how should I edit them?

The easiest thing to do, if you do not have a reader, is to open the MD file with a text editor and then write the MD file out as an HTML file and then double click to view it with browser.

Parsing JSON Array within JSON Object

mainJSON.getJSONArray("source") returns a JSONArray, hence you can remove the new JSONArray.

The JSONArray contructor with an object parameter expects it to be a Collection or Array (not JSONArray)

Try this:

JSONArray jsonMainArr = mainJSON.getJSONArray("source"); 

Changing the sign of a number in PHP?

function positive_number($number)
    if ($number < 0) {
        $number *= -1;

   return $number;

How to check View Source in Mobile Browsers (Both Android && Feature Phone)

This question is a few years old, and there are some good suggestions for workarounds, but I didn't really notice any answers that address the core of the original question head-on. So:

  • Providing a "universal" method for viewing source in a feature phone browser (or even arbitrary third-party smartphone browser) is impossible because "view source" — via any method — is a feature implemented in the browser. So how it's accessed, or even if it can be accessed, is up to the developers of the browser. I'm sure there are plenty of browsers that intentionally prevent the user from viewing page source, and if so then you're out of luck, except maybe for workarounds like the ones offered here.

  • Workarounds such as "view source" apps external to the browser, while useful in some cases, are at best an imperfect partial solution to the original request. It's never certain that any such app will display the source of the page in the same form as it's loaded by the phone's browser.

    Modern web content changes itself in all manner of ways through browser detection, session management, etc. so that the source loaded by any external app can never be relied on to represent the source as loaded by a different app. If you're going to use an external app to load a page because you want to see the source, you might as well just use Chrome (or, on an iOS device, Safari) instead.

How to do integer division in javascript (Getting division answer in int not float)?

var x = parseInt(455/10);

The parseInt() function parses a string and returns an integer.

The radix parameter is used to specify which numeral system to be used, for example, a radix of 16 (hexadecimal) indicates that the number in the string should be parsed from a hexadecimal number to a decimal number.

If the radix parameter is omitted, JavaScript assumes the following:

If the string begins with "0x", the radix is 16 (hexadecimal)
If the string begins with "0", the radix is 8 (octal). This feature is deprecated
If the string begins with any other value, the radix is 10 (decimal)

How to flush route table in windows?

In Microsoft Windows, you can go through by route -f command to delete your current Gateway, check route / ? for more advance option, like add / delete etc and also can write a batch to add route on specific time as well but if you need to delete IP cache, then you have the option to use arp command.

instantiate a class from a variable in PHP?

How to pass dynamic constructor parameters too

If you want to pass dynamic constructor parameters to the class, you can use this code:

$reflectionClass = new ReflectionClass($className);

$module = $reflectionClass->newInstanceArgs($arrayOfConstructorParameters);

More information on dynamic classes and parameters

PHP >= 5.6

As of PHP 5.6 you can simplify this even more by using Argument Unpacking:

// The "..." is part of the language and indicates an argument array to unpack.
$module = new $className(...$arrayOfConstructorParameters);

Thanks to DisgruntledGoat for pointing that out.

Clear the form field after successful submission of php form

I have a simple form to submit testimonials, I also was having trouble clearing the form, what I did was after the query is submitted successfully I and before redirecting to another page I cleared the imputs $name =''; ect. The page submitted and redirected with no errors.

How to test which port MySQL is running on and whether it can be connected to?

Using Mysql client:


How to retrieve Request Payload

If I understand the situation correctly, you are just passing json data through the http body, instead of application/x-www-form-urlencoded data.

You can fetch this data with this snippet:

$request_body = file_get_contents('php://input');

If you are passing json, then you can do:

$data = json_decode($request_body);

$data then contains the json data is php array.

php://input is a so called wrapper.

php://input is a read-only stream that allows you to read raw data from the request body. In the case of POST requests, it is preferable to use php://input instead of $HTTP_RAW_POST_DATA as it does not depend on special php.ini directives. Moreover, for those cases where $HTTP_RAW_POST_DATA is not populated by default, it is a potentially less memory intensive alternative to activating always_populate_raw_post_data. php://input is not available with enctype="multipart/form-data".

Best way to check for IE less than 9 in JavaScript without library

Below is an improvement over James Padolsey's solution:

1) It doesn't pollute memory (James' snippet creates 7 unremoved document fragments when detecting IE11, for example).
2) It's faster since it checks for a documentMode value before generating markup.
3) It's far more legible, especially to beginning JavaScript programmers.

Gist link:

 - Behavior: For IE8+, we detect the documentMode value provided by Microsoft.
 - Behavior: For <IE8, we inject conditional comments until we detect a match.
 - Results: In IE, the version is returned. In other browsers, false is returned.
 - Tip: To check for a range of IE versions, use if (!IE || IE < MAX_VERSION)...

var IE = (function() { 
    if (document.documentMode) {
        return document.documentMode;
    } else {
        for (var i = 7; i > 0; i--) {
            var div = document.createElement("div");

            div.innerHTML = "<!--[if IE " + i + "]><span></span><![endif]-->";

            if (div.getElementsByTagName("span").length) {
                return i;

    return undefined;

Error: Java: invalid target release: 11 - IntelliJ IDEA

Just had same error. Problem was that I had empty file. As soon as I added package name inside it worked...

SqlBulkCopy - The given value of type String from the data source cannot be converted to type money of the specified target column

Since I don't believe "Please use..." plus some random code that is unrelated to the question is a good answer, but I do believe the spirit was correct, I decided to answer this correctly.

When you are using Sql Bulk Copy, it attempts to align your input data directly with the data on the server. So, it takes the Server Table and performs a SQL statement similar to this:

INSERT INTO [schema].[table] (col1, col2, col3) VALUES

Therefore, if you give it Columns 1, 3, and 2, EVEN THOUGH your names may match (e.g.: col1, col3, col2). It will insert like so:

INSERT INTO [schema].[table] (col1, col2, col3) VALUES
                          ('col1', 'col3', 'col2')

It would be extra work and overhead for the Sql Bulk Insert to have to determine a Column Mapping. So it instead allows you to choose... Either ensure your Code and your SQL Table columns are in the same order, or explicitly state to align by Column Name.

Therefore, if your issue is mis-alignment of the columns, which is probably the majority of the cause of this error, this answer is for you.


using System.Data;
myDataTable.Columns.Cast<DataColumn>().ToList().ForEach(x => 
    bulkCopy.ColumnMappings.Add(new SqlBulkCopyColumnMapping(x.ColumnName, x.ColumnName)));

This will take your existing DataTable, which you are attempt to insert into your created BulkCopy object, and it will just explicitly map name to name. Of course if, for some reason, you decided to name your DataTable Columns differently than your SQL Server Columns... that's on you.

Get div height with plain JavaScript



console.log("Height:", myDiv.offsetHeight );
#myDiv { width: 100px; height: 666px; background: red}
<div id="myDiv"></div>

HTML form with side by side input fields

Put style="float:left" on each of your divs:

<div style="float:left;">...........


<div style="float:left;">
  <label for="username">First Name</label>
  <input id="user_first_name" name="user[first_name]" size="30" type="text" />

<div style="float:left;">
  <label for="name">Last Name</label>
  <input id="user_last_name" name="user[last_name]" size="30" type="text" />

To put an element on new line, put this div below it:

<div style="clear:both;">&nbsp;</div>

Of course, you can also create classes in the CSS file:



And then your html should look like this:

<div class="left">
  <label for="username">First Name</label>
  <input id="user_first_name" name="user[first_name]" size="30" type="text" />

<div class="left">
  <label for="name">Last Name</label>
  <input id="user_last_name" name="user[last_name]" size="30" type="text" />

To put an element on new line, put this div below it:

<div class="clear">&nbsp;</div>

More Info:

PostgreSQL INSERT ON CONFLICT UPDATE (upsert) use all excluded values

Postgres hasn't implemented an equivalent to INSERT OR REPLACE. From the ON CONFLICT docs (emphasis mine):

It can be either DO NOTHING, or a DO UPDATE clause specifying the exact details of the UPDATE action to be performed in case of a conflict.

Though it doesn't give you shorthand for replacement, ON CONFLICT DO UPDATE applies more generally, since it lets you set new values based on preexisting data. For example:

INSERT INTO users (id, level)
VALUES (1, 0)
SET level = users.level + 1;

Find an element in DOM based on an attribute value

Here is an example , How to search images in a document by src attribute :


The server encountered an internal error that prevented it from fulfilling this request - in servlet 3.0

I found solution. It works fine when I throw away next line from form:


And now it pass all parameters at request ok:

 <form action="/registration" method="post">
   <%-- error messages --%>
   <div class="form-group">
    <c:forEach items="${registrationErrors}" var="error">
    <p class="error">${error}</p>

Pretty-Print JSON in Java

Most of the existing answers either depend on some external library, or requiring a special Java version. Here is a simple code to pretty print a JSON string, only using general Java APIs (available in Java 7 for higher; haven't tried older version although).

The basic idea is to tigger the formatting based on special characters in JSON. For example, if a '{' or '[' is observed, the code will create a new line and increase the indent level.

Disclaimer: I only tested this for some simple JSON cases (basic key-value pair, list, nested JSON) so it may need some work for more general JSON text, like string value with quotes inside, or special characters (\n, \t etc.).

 * A simple implementation to pretty-print JSON file.
 * @param unformattedJsonString
 * @return
public static String prettyPrintJSON(String unformattedJsonString) {
  StringBuilder prettyJSONBuilder = new StringBuilder();
  int indentLevel = 0;
  boolean inQuote = false;
  for(char charFromUnformattedJson : unformattedJsonString.toCharArray()) {
    switch(charFromUnformattedJson) {
      case '"':
        // switch the quoting status
        inQuote = !inQuote;
      case ' ':
        // For space: ignore the space if it is not being quoted.
        if(inQuote) {
      case '{':
      case '[':
        // Starting a new block: increase the indent level
        appendIndentedNewLine(indentLevel, prettyJSONBuilder);
      case '}':
      case ']':
        // Ending a new block; decrese the indent level
        appendIndentedNewLine(indentLevel, prettyJSONBuilder);
      case ',':
        // Ending a json item; create a new line after
        if(!inQuote) {
          appendIndentedNewLine(indentLevel, prettyJSONBuilder);
  return prettyJSONBuilder.toString();

 * Print a new line with indention at the beginning of the new line.
 * @param indentLevel
 * @param stringBuilder
private static void appendIndentedNewLine(int indentLevel, StringBuilder stringBuilder) {
  for(int i = 0; i < indentLevel; i++) {
    // Assuming indention using 2 spaces
    stringBuilder.append("  ");

YouTube URL in Video Tag

MediaElement YouTube API example

Wraps the YouTube API in an HTML5 Media API wrapper, so that it can be programmed against as if it was true HTML5 <video>.

<script src="jquery.js"></script>
<script src="mediaelement-and-player.min.js"></script>
<link rel="stylesheet" href="mediaelementplayer.css" />

<video width="640" height="360" id="player1" preload="none">
    <source type="video/youtube" src="" />

    var player = new MediaElementPlayer('#player1');

-bash: syntax error near unexpected token `newline'

The characters '<', and '>', are to indicate a place-holder, you should remove them to read:

php /usr/local/solusvm/scripts/pass.php --type=admin --comm=change --username=ADMINUSERNAME

How to find which columns contain any NaN value in Pandas dataframe

i use these three lines of code to print out the column names which contain at least one null value:

for column in dataframe:
    if dataframe[column].isnull().any():
       print('{0} has {1} null values'.format(column, dataframe[column].isnull().sum()))

Mythical man month 10 lines per developer day - how close on large projects?

Without actually checking my copy of "The Mythical Man-Month" (everybody reading this should really have a copy readily available), there was a chapter in which Brooks looked at productivity by lines written. The interesting point, to him, was not the actual number of lines written per day, but the fact that it seemed to be roughly the same in assembler and in PL/I (I think that was the higher-level language used).

Brooks wasn't about to throw out some sort of arbitrary figure of productivity, but he was working from data on real projects, and for all I can remember they might have been 12 lines/day on the average.

He did point out that productivity could be expected to vary. He said that compilers were three times as hard as application programs, and operating systems three times as hard as compilers. (He seems to have liked using multipliers of three to separate categories.)

I don't know if he appreciated then the individual differences between programmer productivity (although in an order-of-magnitude argument he did postulate a factor of seven difference), but as we know superior productivity isn't just a matter of writing more code, but also writing the right code to do the job.

There's also the question of the environment. Brooks speculated a bit about what would make developers faster or slower. Like lots of people, he questioned whether the current fads (interactive debugging using time-sharing systems) were any better than the old ways (careful preplanning for a two-hour shot using the whole machine).

Given that, I would disregard any actual productivity number he came up with as useless; the continuing value of the book is in the principles and more general lessons that people persist in not learning. (Hey, if everybody had learned them, the book would be of historical interest only, much like all of Freud's arguments that there is something like a subconscious mind.)

How can I read Chrome Cache files?

Note: The below answer is out of date since the Chrome disk cache format has changed.

Joachim Metz provides some documentation of the Chrome cache file format with references to further information.

For my use case, I only needed a list of cached URLs and their respective timestamps. I wrote a Python script to get these by parsing the data_* files under C:\Users\me\AppData\Local\Google\Chrome\User Data\Default\Cache\:

import datetime
with open('data_1', 'rb') as datafile:
    data =

for ptr in range(len(data)):
    fourBytes = data[ptr : ptr + 4]
    if fourBytes == b'http':

        # Found the string 'http'. Hopefully this is a Cache Entry
        endUrl = data.index(b'\x00', ptr)
        urlBytes = data[ptr : endUrl]
            url = urlBytes.decode('utf-8')

        # Extract the corresponding timestamp
            timeBytes = data[ptr - 72 : ptr - 64]
            timeInt = int.from_bytes(timeBytes, byteorder='little')
            secondsSince1601 = timeInt / 1000000
            jan1601 = datetime.datetime(1601, 1, 1, 0, 0, 0)
            timeStamp = jan1601 + datetime.timedelta(seconds=secondsSince1601)

        print('{} {}'.format(str(timeStamp)[:19], url))

How to subtract 2 hours from user's local time?

According to Javascript Date Documentation, you can easily do this way:

var twoHoursBefore = new Date();
twoHoursBefore.setHours(twoHoursBefore.getHours() - 2);

And don't worry about if hours you set will be out of 0..23 range. Date() object will update the date accordingly.

log4j vs logback

Logback natively implements the SLF4J API. This means that if you are using logback, you are actually using the SLF4J API. You could theoretically use the internals of the logback API directly for logging, but that is highly discouraged. All logback documentation and examples on loggers are written in terms of the SLF4J API.

So by using logback, you'd be actually using SLF4J and if for any reason you wanted to switch back to log4j, you could do so within minutes by simply dropping slf4j-log4j12.jar onto your class path.

When migrating from logback to log4j, logback specific parts, specifically those contained in logback.xml configuration file would still need to be migrated to its log4j equivalent, i.e. When migrating in the other direction, log4j configuration, i.e., would need to be converted to its logback equivalent. There is an on-line tool for that. The amount of work involved in migrating configuration files is much less than the work required to migrate logger calls disseminated throughout all your software's source code and its dependencies.

How can I set a dynamic model name in AngularJS?

You can use something like this scopeValue[field], but if your field is in another object you will need another solution.

To solve all kind of situations, you can use this directive:'dynamicModel', ['$compile', '$parse', function ($compile, $parse) {
    return {
        restrict: 'A',
        terminal: true,
        priority: 100000,
        link: function (scope, elem) {
            var name = $parse(elem.attr('dynamic-model'))(scope);
            elem.attr('ng-model', name);

Html example:

<input dynamic-model="'scopeValue.' + field" type="text">

Curly braces in string in PHP


$number = 4;
print "You have the {$number}th edition book";
//output: "You have the 4th edition book";

Without curly braces PHP would try to find a variable named $numberth, that doesn't exist!

AngularJS : Factory and Service?

Factory and Service is a just wrapper of a provider.


Factory can return anything which can be a class(constructor function), instance of class, string, number or boolean. If you return a constructor function, you can instantiate in your controller.

 myApp.factory('myFactory', function () {

  // any logic here..

  // Return any thing. Here it is object
  return {
    name: 'Joe'


Service does not need to return anything. But you have to assign everything in this variable. Because service will create instance by default and use that as a base object.

myApp.service('myService', function () {

  // any logic here.. = 'Joe';

Actual angularjs code behind the service

function service(name, constructor) {
    return factory(name, ['$injector', function($injector) {
        return $injector.instantiate(constructor);

It just a wrapper around the factory. If you return something from service, then it will behave like Factory.

IMPORTANT: The return result from Factory and Service will be cache and same will be returned for all controllers.

When should i use them?

Factory is mostly preferable in all cases. It can be used when you have constructor function which needs to be instantiated in different controllers.

Service is a kind of Singleton Object. The Object return from Service will be same for all controller. It can be used when you want to have single object for entire application. Eg: Authenticated user details.

For further understanding, read

Select first row in each GROUP BY group?

Use ARRAY_AGG function for PostgreSQL, U-SQL, IBM DB2, and Google BigQuery SQL:

SELECT customer, (ARRAY_AGG(id ORDER BY total DESC))[1], MAX(total)
FROM purchases
GROUP BY customer

Specify the date format in XMLGregorianCalendar

you don't need to specify a "SimpleDateFormat", it's simple: You must do specify the constant "DatatypeConstants.FIELD_UNDEFINED" where you don't want to show

GregorianCalendar cal = new GregorianCalendar();
cal.setTime(new Date());
XMLGregorianCalendar xmlDate = DatatypeFactory.newInstance().newXMLGregorianCalendarDate(cal.get(Calendar.YEAR), cal.get(Calendar.MONTH)+1, cal.get(Calendar.DAY_OF_MONTH), DatatypeConstants.FIELD_UNDEFINED);

How to get date representing the first day of a month?

i think normally converts string to MM/DD/YY HH:mm:ss, you would need to use 08/01/2010 00:00:00

Sorry, misunderstood the question, looking to see if you can change the order for strings.

This may be what you want:

declare @test as date

select @test = CONVERT(date, '01/08/2010 00:00:00', 103)
select convert(varchar(15), @test, 106)

Objective-C declared @property attributes (nonatomic, copy, strong, weak)

nonatomic property means @synthesized methods are not going to be generated threadsafe -- but this is much faster than the atomic property since extra checks are eliminated.

strong is used with ARC and it basically helps you , by not having to worry about the retain count of an object. ARC automatically releases it for you when you are done with it.Using the keyword strong means that you own the object.

weak ownership means that you don't own it and it just keeps track of the object till the object it was assigned to stays , as soon as the second object is released it loses is value. For eg. obj.a=objectB; is used and a has weak property , than its value will only be valid till objectB remains in memory.

copy property is very well explained here

strong,weak,retain,copy,assign are mutually exclusive so you can't use them on one single object... read the "Declared Properties " section

hoping this helps you out a bit...

PG COPY error: invalid input syntax for integer

Incredibly, my solution to the same error was to just re-arrange the columns. For anyone else doing the above solutions and still not getting past the error.

I apparently had to arrange the columns in my CSV file to match the same sequence in the table listing in PGADmin.

"Undefined reference to" template class constructor

This link explains where you're going wrong:

[35.12] Why can't I separate the definition of my templates class from its declaration and put it inside a .cpp file?

Place the definition of your constructors, destructors methods and whatnot in your header file, and that will correct the problem.

This offers another solution:

How can I avoid linker errors with my template functions?

However this requires you to anticipate how your template will be used and, as a general solution, is counter-intuitive. It does solve the corner case though where you develop a template to be used by some internal mechanism, and you want to police the manner in which it is used.

Map implementation with duplicate keys

MultiValueMap class

SSL peer shut down incorrectly in Java

I had mutual SSL enabled on my Spring Boot app and my Jenkins pipeline was re-building the dockers, bringing the compose up and then running integration tests which failed every time with this error. I was able to test the running dockers without this SSL error every time in a standalone test on the same Jenkins machine. It turned out that server was not completely up when the tests started executing. Putting a sleep of few seconds in my bash script to allow Spring boot application to be up and running completely resolved the issue.

jQuery onclick event for <li> tags

Here, to get the text of the menu that triggered the event (does not seem to have any id):

    $(' li').click(function(e) 

How do I clear a C++ array?

Hey i think The fastest way to handle that kind of operation is to memset() the memory.


memset(&myPage.pageArray[0][0], 0, sizeof(myPage.pageArray));

A similar C++ way would be to use std::fill

char *begin = myPage.pageArray[0][0];
char *end = begin + sizeof(myPage.pageArray);
std::fill(begin, end, 0);

How do I determine file encoding in OS X?

The @ sign means the file has extended attributes. xattr file shows what attributes it has, xattr -l file shows the attribute values too (which can be large sometimes — try e.g. xattr /System/Library/Fonts/HelveLTMM to see an old-style font that exists in the resource fork).

Rails params explained?

On the Rails side, params is a method that returns an ActionController::Parameters object. See

JavaScript is in array

Depending on the version of JavaScript you have available, you can use indexOf:

Returns the first index at which a given element can be found in the array, or -1 if it is not present.

Or some:

Tests whether some element in the array passes the test implemented by the provided function.

But, if you're doing this sort of existence check a lot you'd be better of using an Object to store your strings (or perhaps an object as well as the Array depending on what you're doing with your data).

C++, how to declare a struct in a header file

You've only got a forward declaration for student in the header file; you need to place the struct declaration in the header file, not the .cpp. The method definitions will be in the .cpp (assuming you have any).

Bootstrap collapse animation not smooth

Padding around the collapsing div must be 0

Open new popup window without address bars in firefox & IE

Workaround - Open a modal popup window and embed the external URL as an iframe.

Insert PHP code In WordPress Page and Post


there are 3 steps to run PHP code inside post or page.

  1. In functions.php file (in your theme) add new function

  2. In functions.php file (in your theme) register new shortcode which call your function:

add_shortcode( 'SHORCODE_NAME', 'FUNCTION_NAME' );
  1. use your new shortcode

Example #1: just display text.

In functions:

function simple_function_1() {
    return "Hello World!";

add_shortcode( 'own_shortcode1', 'simple_function_1' );

In post/page:



Hello World!

Example #2: use for loop.

In functions:

function simple_function_2() {
    $output = "";
    for ($number = 1; $number < 10; $number++) {    
        // Append numbers to the string
        $output .= "$number<br>";
    return "$output";

add_shortcode( 'own_shortcode2', 'simple_function_2' );

In post/page:




Example #3: use shortcode with arguments

In functions:

function simple_function_3($name) {
    return "Hello $name";

add_shortcode( 'own_shortcode3', 'simple_function_3' );

In post/page:

[own_shortcode3 name="John"]


Hello John

Example #3 - without passing arguments

In post/page:




Getting indices of True values in a boolean list

Using element-wise multiplication and a set:

>>> states = [False, False, False, False, True, True, False, True, False, False, False, False, False, False, False, False]
>>> set(multiply(states,range(1,len(states)+1))-1).difference({-1})

Output: {4, 5, 7}

pip install returning invalid syntax

  1. First go to python directory where it was installed on your windows machine by using


  2. Then go ahead as i did in the picture

enter image description here

Java - How do I make a String array with values?

Another way is with Arrays.setAll, or Arrays.fill:

String[] v = new String[1000];
Arrays.setAll(v, i -> Integer.toString(i * 30));
//v => ["0", "30", "60", "90"... ]

Arrays.fill(v, "initial value");
//v => ["initial value", "initial value"... ]

This is more usefull for initializing (possibly large) arrays where you can compute each element from its index.

File loading by getClass().getResource()

getClass().getResource() uses the class loader to load the resource. This means that the resource must be in the classpath to be loaded.

When doing it with Eclipse, everything you put in the source folder is "compiled" by Eclipse:

  • .java files are compiled into .class files that go the the bin directory (by default)
  • other files are copied to the bin directory (respecting the package/folder hirearchy)

When launching the program with Eclipse, the bin directory is thus in the classpath, and since it contains the file, this file can be loaded by the class loader, using getResource() or getResourceAsStream().

If it doesn't work from the command line, it's thus because the file is not in the classpath.

Note that you should NOT do

FileInputStream inputStream = new FileInputStream(new File(getClass().getResource(url).toURI()));

to load a resource. Because that can work only if the file is loaded from the file system. If you package your app into a jar file, or if you load the classes over a network, it won't work. To get an InputStream, just use


And finally, as the documentation indicates,


will load a file located in the same package as the class Foo.


will load a file located in the package

HttpServletRequest get JSON POST data

Are you posting from a different source (so different port, or hostname)? If so, this very very recent topic I just answered might be helpful.

The problem was the XHR Cross Domain Policy, and a useful tip on how to get around it by using a technique called JSONP. The big downside is that JSONP does not support POST requests.

I know in the original post there is no mention of JavaScript, however JSON is usually used for JavaScript so that's why I jumped to that conclusion

Reading values from DataTable

I think it will work

for (int i = 1; i <= broj_ds; i++ ) 

     QuantityInIssueUnit_value = dr_art_line_2[i]["Column"];
     QuantityInIssueUnit_uom  = dr_art_line_2[i]["Column"];


Convert bytes to int?

int.from_bytes( bytes, byteorder, *, signed=False )

doesn't work with me I used function from this website, it works well

def bytes_to_int(bytes):
    result = 0
    for b in bytes:
        result = result * 256 + int(b)
    return result

def int_to_bytes(value, length):
    result = []
    for i in range(0, length):
        result.append(value >> (i * 8) & 0xff)
    return result

How to change legend title in ggplot

Adding this to the mix, for when you have changed the colors. This also worked for me in a qplot with two discrete variables:

p+ scale_fill_manual(values = Main_parties_color, name = "Main Parties")

changing iframe source with jquery

Should work.

Here's a working example:


function loadIframe(iframeName, url) {
    var $iframe = $('#' + iframeName);
    if ($iframe.length) {
        return false;
    return true;

Setting an HTML text input box's "default" value. Revert the value when clicking ESC

This esc behavior is IE only by the way. Instead of using jQuery use good old javascript for creating the element and it works.

var element = document.createElement('input');
element.type = 'text';
element.value = 100;

If you want to extend this functionality to other browsers then I would use jQuery's data object to store the default. Then set it when user presses escape.

//store default value for all elements on page. set new default on blur
$('input').each( function() {
    $(this).data('default', $(this).val());
    $(this).blur( function() { $(this).data('default', $(this).val()); });

$('input').keyup( function(e) {
    if (e.keyCode == 27) { $(this).val($(this).data('default')); }

How can I check if a single character appears in a string?

You can use string.indexOf('a').

If the char a is present in string :

it returns the the index of the first occurrence of the character in the character sequence represented by this object, or -1 if the character does not occur.

How to count rows with SELECT COUNT(*) with SQLAlchemy?

I needed to do a count of a very complex query with many joins. I was using the joins as filters, so I only wanted to know the count of the actual objects. count() was insufficient, but I found the answer in the docs here:

The code would look something like this (to count user objects):

from sqlalchemy import func


Can't connect to MySQL server on 'localhost' (10061) after Installation

I have Windows 8.1 and I too had this problem. My teacher told me it was probably because my MySQL server had stopped running. She told me to go into the Computer Management utility (right click the lower-most left hand corner of the screen on Windows 8.1 to access Computer Management). Then under Services and Applications, open up the Services and find MySQL. You should be able to right-click on MySQL and restart it.

OrderBy descending in Lambda expression?

LastOrDefault() is usually not working but with the Tolist() it will work. There is no need to use OrderByDescending use Tolist() like this.

GroupBy(p => p.Nws_ID).ToList().LastOrDefault();

How can I suppress column header output for a single SQL statement?

Invoke mysql with the -N (the alias for -N is --skip-column-names) option:

mysql -N ...
use testdb;
select * from names;

|    1 | pete  |
|    2 | john  |
|    3 | mike  |
3 rows in set (0.00 sec)

Credit to ErichBSchulz for pointing out the -N alias.

To remove the grid (the vertical and horizontal lines) around the results use -s (--silent). Columns are separated with a TAB character.

mysql -s ...
use testdb;
select * from names;

id  name
1   pete
2   john
3   mike

To output the data with no headers and no grid just use both -s and -N.

mysql -sN ...

How to load html string in a webview?

You also can try out this

   final WebView webView = new WebView(this);
            webView.loadDataWithBaseURL(null, content, "text/html", "UTF-8", null);

Correlation heatmap

Another alternative is to use the heatmap function in seaborn to plot the covariance. This example uses the Auto data set from the ISLR package in R (the same as in the example you showed).

import pandas.rpy.common as com
import seaborn as sns
%matplotlib inline

# load the R package ISLR
infert = com.importr("ISLR")

# load the Auto dataset
auto_df = com.load_data('Auto')

# calculate the correlation matrix
corr = auto_df.corr()

# plot the heatmap

enter image description here

If you wanted to be even more fancy, you can use Pandas Style, for example:

cmap = cmap=sns.diverging_palette(5, 250, as_cmap=True)

def magnify():
    return [dict(selector="th",
                 props=[("font-size", "7pt")]),
                 props=[('padding', "0em 0em")]),
                 props=[("font-size", "12pt")]),
            dict(selector="tr:hover td:hover",
                 props=[('max-width', '200px'),
                        ('font-size', '12pt')])
], axis=1)\
    .set_properties(**{'max-width': '80px', 'font-size': '10pt'})\
    .set_caption("Hover to magify")\

enter image description here

' << ' operator in verilog

1 << ADDR_WIDTH means 1 will be shifted 8 bits to the left and will be assigned as the value for RAM_DEPTH.

In addition, 1 << ADDR_WIDTH also means 2^ADDR_WIDTH.

Given ADDR_WIDTH = 8, then 2^8 = 256 and that will be the value for RAM_DEPTH

Retrieve filename from file descriptor in C

I had this problem on Mac OS X. We don't have a /proc virtual file system, so the accepted solution cannot work.

We do, instead, have a F_GETPATH command for fcntl:

 F_GETPATH          Get the path of the file descriptor Fildes.  The argu-
                    ment must be a buffer of size MAXPATHLEN or greater.

So to get the file associated to a file descriptor, you can use this snippet:

#include <sys/syslimits.h>
#include <fcntl.h>

char filePath[PATH_MAX];
if (fcntl(fd, F_GETPATH, filePath) != -1)
    // do something with the file path

Since I never remember where MAXPATHLEN is defined, I thought PATH_MAX from syslimits would be fine.

Java equivalent of unsigned long long?

For unsigned long you can use UnsignedLong class from Guava library:

It supports various operations:

  • plus
  • minus
  • times
  • mod
  • dividedBy

The thing that seems missing at the moment are byte shift operators. If you need those you can use BigInteger from Java.

Run javascript script (.js file) in mongodb including another file inside js

for running mutilple js files

cd /root/migrate/

ls -1 *.js | sed 's/.js$//' | while read name; do
     start=`date +%s`
     mongo localhost:27017/wbars $name.js;
     end=`date +%s`
     runtime=$(printf '%dh:%dm:%ds\n' $(($runtime1/3600)) $(($secs%3600/60)) $(($secs%60)))
     echo @@@@@@@@@@@@@ $runtime $name.js completed @@@@@@@@@@@
     echo "$name.js completed"
     echo 1 > /proc/sys/vm/drop_caches
     echo 2 > /proc/sys/vm/drop_caches
     echo 3 > /proc/sys/vm/drop_caches

How to use nanosleep() in C? What are `tim.tv_sec` and `tim.tv_nsec`?

This worked for me ....

#include <stdio.h>
#include <time.h>   /* Needed for struct timespec */

int nsleep(long miliseconds)
   struct timespec req, rem;

   if(miliseconds > 999)
        req.tv_sec = (int)(miliseconds / 1000);                            /* Must be Non-Negative */
        req.tv_nsec = (miliseconds - ((long)req.tv_sec * 1000)) * 1000000; /* Must be in range of 0 to 999999999 */
        req.tv_sec = 0;                         /* Must be Non-Negative */
        req.tv_nsec = miliseconds * 1000000;    /* Must be in range of 0 to 999999999 */

   return nanosleep(&req , &rem);

int main()
   int ret = nsleep(2500);
   printf("sleep result %d\n",ret);
   return 0;

What are the git concepts of HEAD, master, origin?

HEAD is not the latest revision, it's the current revision. Usually, it's the latest revision of the current branch, but it doesn't have to be.

master is a name commonly given to the main branch, but it could be called anything else (or there could be no main branch).

origin is a name commonly given to the main remote. remote is another repository that you can pull from and push to. Usually it's on some server, like github.

Testing HTML email rendering

Another thing you could try is to upload the html to a webpage and then open the webpage in word to test Outlook.

SQL Server: Get data for only the past year

Well, I think something is missing here. User wants to get data from the last year and not from the last 365 days. There is a huge diference. In my opinion, data from the last year is every data from 2007 (if I am in 2008 now). So the right answer would be:


Then if you want to restrict this query, you can add some other filter, but always searching in the last year.

SELECT ... FROM ... WHERE YEAR(DATE) = YEAR(GETDATE()) - 1 AND DATE > '05/05/2007'

To check if string contains particular word

   String sentence = "Check this answer and you can find the keyword with this code";
    String search = "keyword";

Compare the line of string in given string

if ((sentence.toLowerCase().trim()).equals(search.toLowerCase().trim())) {
System.out.println("not found");
else {  
    System.out.println("I found the keyword"); 

How to read an entire file to a string using C#?

well the quickest way meaning with the least possible C# code is probably this one:

string readText = System.IO.File.ReadAllText(path);

Passing additional variables from command line to make

export ROOT_DIR=<path/value>

Then use the variable, $(ROOT_DIR) in the Makefile.

Specified argument was out of the range of valid values. Parameter name: site

I had the same issue with VS2017. Following solved the issue.

  1. Run Command prompt as Administrator.
  2. Write following two commands which will update your registry.

reg add HKLM\Software\WOW6432Node\Microsoft\InetStp /v MajorVersion /t REG_DWORD /d 10 /f

reg add HKLM\Software\Microsoft\InetStp /v MajorVersion /t REG_DWORD /d 10 /f

This should solve your problem. Refer to this link for more details.

Extract month and year from a zoo::yearmon object

I know the OP is using zoo here, but I found this thread googling for a standard ts solution for the same problem. So I thought I'd add a zoo-free answer for ts as well.

# create an example Date 
date_1 <- as.Date("1990-01-01")
# extract year
as.numeric(format(date_1, "%Y"))
# extract month
as.numeric(format(date_1, "%m"))

Make javascript alert Yes/No Instead of Ok/Cancel

You can use jQuery UI Dialog.

These libraries create HTML elements that look and behave like a dialog box, allowing you to put anything you want (including form elements or video) in the dialog.

Hibernate Delete query

I'm not sure but:

  • If you call the delete method with a non transient object, this means first fetched the object from the DB. So it is normal to see a select statement. Perhaps in the end you see 2 select + 1 delete?

  • If you call the delete method with a transient object, then it is possible that you have a cascade="delete" or something similar which requires to retrieve first the object so that "nested actions" can be performed if it is required.

Edit: Calling delete() with a transient instance means doing something like that:

MyEntity entity = new MyEntity();

This will delete the row with id 1234, even if the object is a simple pojo not retrieved by Hibernate, not present in its session cache, not managed at all by Hibernate.

If you have an entity association Hibernate probably have to fetch the full entity so that it knows if the delete should be cascaded to associated entities.

Set Jackson Timezone for Date deserialization

I had same problem with Calendar deserialization, solved extending CalendarDeserializer.
It forces UTC Timezone
I paste the code if someone need it:

public class UtcCalendarDeserializer extends CalendarDeserializer {

    TimeZone TZ_UTC = TimeZone.getTimeZone("UTC");

    public Calendar deserialize(JsonParser jp, DeserializationContext ctxt) throws IOException, JsonProcessingException {
        JsonToken t = jp.getCurrentToken();
        if (t == JsonToken.VALUE_NUMBER_INT) {
            Calendar cal = Calendar.getInstance(TZ_UTC);

            return cal;

        return super.deserialize(jp, ctxt);

in JSON model class just annotate the field with:

@JsonDeserialize(using = UtcCalendarDeserializer.class)
private Calendar myCalendar;

In Python, how do I loop through the dictionary and change the value if it equals something?

You could create a dict comprehension of just the elements whose values are None, and then update back into the original:

tmp = dict((k,"") for k,v in mydict.iteritems() if v is None)

Update - did some performance tests

Well, after trying dicts of from 100 to 10,000 items, with varying percentage of None values, the performance of Alex's solution is across-the-board about twice as fast as this solution.

Session TimeOut in web.xml

You can see many options as answer for your question, however you can use "-1" where the session never expires. Since you do not know how much time it will take for the thread to complete. E.g.:


Or if you don't want a timeout happening for some purpose:


Another option could be increase the number to 1000, etc, etc, bla, bla, bla.

But if you really want to stop and you consider that is unnecessary for your application to force the user to logout, just add a logout button and the user will decide when to leave.

Here is what you can do to solve the problem if you do not need to force to logout, and in you are loading files that could take time base on server and your computer speed and the size of the file.

<!-- sets the default session timeout to 60 minutes. -->
   <!-- <session-config>
   </session-config> -->

Just comment it or deleted that's it! Tan tararantan, tan tan!

initializing a Guava ImmutableMap

Notice that your error message only contains five K, V pairs, 10 arguments total. This is by design; the ImmutableMap class provides six different of() methods, accepting between zero and five key-value pairings. There is not an of(...) overload accepting a varags parameter because K and V can be different types.

You want an ImmutableMap.Builder:

ImmutableMap<String,String> myMap = ImmutableMap.<String, String>builder()
    .put("key1", "value1") 
    .put("key2", "value2") 
    .put("key3", "value3") 
    .put("key4", "value4") 
    .put("key5", "value5") 
    .put("key6", "value6") 
    .put("key7", "value7") 
    .put("key8", "value8") 
    .put("key9", "value9")

java.lang.NoSuchMethodError: org.apache.commons.codec.binary.Base64.encodeBase64String() in Java EE application

Some Google tooling such as GWT has an embedded version of commons-codec with a pre-1.4 Base64 class. You may need to make such tooling JARs inaccessible to your code by refactoring your project such that only the parts of your code that need that tooling can see the dependency.

Set Value of Input Using Javascript Function

The following works in MVC5:

document.getElementById('theID').value = 'new value';

What is the purpose of global.asax in

Global.asax is the application file.

It is an optional file that handles events raised by ASP.NET or by HttpModules. Mostly used for application and session start/end events and for global error handling.

When used, it should be in the root of the website.

Clear listview content?

Simple its works me:)


Partly cherry-picking a commit with Git

Actually, the best solution for this question is to use checkout commend

git checkout <branch> <path1>,<path2> ..

For example, assume you are in master, you want to the changes from dev1 on project1/Controller/ and project1/Service/, you can use this:

git checkout dev1 project1/Controller/ project1/Service/

That means the master branch only updates from dev1 on those two paths.

How to keep Docker container running after starting services?

Make sure that you add daemon off; to you nginx.conf or run it with CMD ["nginx", "-g", "daemon off;"] as per the official nginx image

Then use the following to run both supervisor as service and nginx as foreground process that will prevent the container from exiting

service supervisor start && nginx

In some cases you will need to have more than one process in your container, so forcing the container to have exactly one process won't work and can create more problems in deployment.

So you need to understand the trade-offs and make your decision accordingly.

How to create a testflight invitation code?

after you add the user for testing. the user should get an email. open that email by your iOS device, then click "Start testing" it will bring you to testFlight to download the app directly. If you open that email via computer, and then click "Start testing" it will show you another page which have the instruction of how to install the app. and that invitation code is on the last line. those All upper case letters is the code.

WPF C# button style

   <Button x:Name="mybtnSave" FlowDirection="LeftToRight"  HorizontalAlignment="Left" Margin="813,614,0,0" VerticalAlignment="Top"  Width="223" Height="53" BorderBrush="#FF2B3830" HorizontalContentAlignment="Center" VerticalContentAlignment="Center" FontFamily="B Titr" FontSize="15" FontWeight="Bold" BorderThickness="2" TabIndex="107" Click="mybtnSave_Click" >
            <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                <GradientStop Color="Black" Offset="0"/>
                <GradientStop Color="#FF080505" Offset="1"/>
                <GradientStop Color="White" Offset="0.536"/>
        <StackPanel HorizontalAlignment="Stretch" Cursor="Hand" >
                <LinearGradientBrush EndPoint="0.5,1" StartPoint="0.5,0">
                    <GradientStop Color="#FF3ED82E" Offset="0"/>
                    <GradientStop Color="#FF3BF728" Offset="1"/>
                    <GradientStop Color="#FF212720" Offset="0.52"/>
            <Image HorizontalAlignment="Left"  Source="image/Append Or Save 3.png" Height="36" Width="203" />
            <TextBlock HorizontalAlignment="Center" Width="145" Height="22" VerticalAlignment="Top" Margin="0,-31,-35,0" Text="Save Com F12" FontFamily="Tahoma" FontSize="14" Padding="0,4,0,0" Foreground="White" />
    </Button>ente[![enter image description here][1]][1]r image description here

VB6 IDE cannot load MSCOMCTL.OCX after update KB 2687323

The solution for me is to install this VB6 patch. I'm on Server2008 (32-bit).

It makes me sad that we're still talking about this in 2014... but here it is. :)

From puetzk's comment: These are outdated: you want to be using Microsoft Visual Basic 6.0 Service Pack 6 Cumulative Update (kb957924).

Expected block end YAML error

This error also occurs if you use four-space instead of two-space indentation.

e.g., the following would throw the error:

    - metadata: {}
        name: colName
        nullable: true

whereas changing indentation to two-spaces would fix it:

  - metadata: {}
    name: colName
    nullable: true

How to drop rows of Pandas DataFrame whose value in a certain column is NaN

Simplest of all solutions:

filtered_df = df[df['EPS'].notnull()]

The above solution is way better than using np.isfinite()

How to get ASCII value of string in C#

If you want the charcode for each character in the string, you could do something like this:

char[] chars = "9quali52ty3".ToCharArray();

Search all the occurrences of a string in the entire project in Android Studio

In Android Studio on a Windows or Linux based machine use shortcut Ctrl + Shift + R to search and replace any string in the whole project.

How do I get ruby to print a full backtrace instead of a truncated one?

You could also do this if you'd like a simple one-liner:

puts caller

How do I fix the multiple-step OLE DB operation errors in SSIS?

I had a similar issue when i was transferring data from an old database to a new database, I got the error above. I then ran the following script


and found that my columns where slightly different in terms of character sizes etc. I then tried to alter the table to the new table structure which did not work. I then transferred the data from the old database into Excel and imported the data from excel to the new DB which worked 100%.

How can I fetch all items from a DynamoDB table without specifying the primary key?

Hi you can download using boto3. In python

import boto3
from boto3.dynamodb.conditions import Key, Attr

dynamodb = boto3.resource('dynamodb')
table = dynamodb.Table('Table')
response = table.scan()
items = response['Items']
while 'LastEvaluatedKey' in response:
    response = table.scan(ExclusiveStartKey=response['LastEvaluatedKey'])

How to split the filename from a full path in batch?

@echo off
Set filename=C:\Documents and Settings\All Users\Desktop\Dostips.cmd
For %%A in ("%filename%") do (
    Set Folder=%%~dpA
    Set Name=%%~nxA
echo.Folder is: %Folder%
echo.Name is: %Name%

But I can't take credit for this; Google found this at

Call another rest api from my server in Spring-Boot

Create Bean for Rest Template to auto wiring the Rest Template object.

public class ChatAppApplication {

    public RestTemplate getRestTemplate(){
        return new RestTemplate();

    public static void main(String[] args) {, args);


Consume the GET/POST API by using RestTemplate - exchange() method. Below is for the post api which is defined in the controller.

@RequestMapping(value = "/postdata",method = RequestMethod.POST)
    public String PostData(){

       return "{\n" +
               "   \"value\":\"4\",\n" +
               "   \"name\":\"David\"\n" +

    @RequestMapping(value = "/post")
    public String getPostResponse(){
        HttpHeaders headers=new HttpHeaders();
        HttpEntity<String> entity=new HttpEntity<String>(headers);

Refer this tutorial[1]


How do I iterate over a JSON structure?

Copied and pasted from, there is no need for the JQuery overhead.

var person = {fname:"John", lname:"Doe", age:25};

var text = "";
var x;
for (x in person) {
    text += person[x];

RESULT: John Doe 25

How to customize listview using baseadapter

Create your own BaseAdapter class and use it as following.

 public class NotificationScreen extends Activity

protected void onCreate_Impl(Bundle savedInstanceState)

    ListView notificationList = (ListView) findViewById(;
    NotiFicationListAdapter notiFicationListAdapter = new NotiFicationListAdapter();

    homeButton = (Button) findViewById(;



Make your own BaseAdapter class and its separate xml file.

public class NotiFicationListAdapter  extends BaseAdapter
private ArrayList<HashMap<String, String>> data;
private LayoutInflater inflater=null;

public NotiFicationListAdapter(ArrayList data)
    inflater =(LayoutInflater)baseActivity.getSystemService(Context.LAYOUT_INFLATER_SERVICE);

public int getCount() 
 return data.size();

public Object getItem(int position) 
 return position;

public long getItemId(int position) 
    return position;

public View getView(int position, View convertView, ViewGroup parent) 
View vi=convertView;

    vi = inflater.inflate(R.layout.notification_list_item, null);

    ImageView compleatImageView=(ImageView)vi.findViewById(;
    TextView name = (TextView)vi.findViewById(; // name
    TextView email_id = (TextView)vi.findViewById(; // email ID
    TextView notification_message = (TextView)vi.findViewById(; // notification message


    return vi;


BaseAdapter xml file.

<RelativeLayout xmlns:android=""
android:padding="5dp" >

    android:text="Game name"
    android:typeface="sans" />

    android:text="E-Mail Id"
    android:textSize="10dip" />

    android:text="Notification message"
    android:textSize="10dip" />

    android:visibility="invisible" />


Change it accordingly and use.

Use find command but exclude files in two directories

You can try below:

find ./ ! \( -path ./tmp -prune \) ! \( -path ./scripts -prune \) -type f -name '*_peaks.bed'

How to call javascript function from code-behind

This is a way to invoke one or more JavaScript methods from the code behind. By using Script Manager we can call the methods in sequence. Consider the below code for example.

ScriptManager.RegisterStartupScript(this, typeof(Page), "UpdateMsg", 
    alert('Overrides successfully Updated.');

In this first method EnableControls() is invoked. Next the alert will be displayed. Next the DisableControls() method will be invoked.

Numpy first occurrence of value greater than existing value

Arrays that have a constant step between elements

In case of a range or any other linearly increasing array you can simply calculate the index programmatically, no need to actually iterate over the array at all:

def first_index_calculate_range_like(val, arr):
    if len(arr) == 0:
        raise ValueError('no value greater than {}'.format(val))
    elif len(arr) == 1:
        if arr[0] > val:
            return 0
            raise ValueError('no value greater than {}'.format(val))

    first_value = arr[0]
    step = arr[1] - first_value
    # For linearly decreasing arrays or constant arrays we only need to check
    # the first element, because if that does not satisfy the condition
    # no other element will.
    if step <= 0:
        if first_value > val:
            return 0
            raise ValueError('no value greater than {}'.format(val))

    calculated_position = (val - first_value) / step

    if calculated_position < 0:
        return 0
    elif calculated_position > len(arr) - 1:
        raise ValueError('no value greater than {}'.format(val))

    return int(calculated_position) + 1

One could probably improve that a bit. I have made sure it works correctly for a few sample arrays and values but that doesn't mean there couldn't be mistakes in there, especially considering that it uses floats...

>>> import numpy as np
>>> first_index_calculate_range_like(5, np.arange(-10, 10))
>>> np.arange(-10, 10)[16]  # double check

>>> first_index_calculate_range_like(4.8, np.arange(-10, 10))

Given that it can calculate the position without any iteration it will be constant time (O(1)) and can probably beat all other mentioned approaches. However it requires a constant step in the array, otherwise it will produce wrong results.

General solution using numba

A more general approach would be using a numba function:

def first_index_numba(val, arr):
    for idx in range(len(arr)):
        if arr[idx] > val:
            return idx
    return -1

That will work for any array but it has to iterate over the array, so in the average case it will be O(n):

>>> first_index_numba(4.8, np.arange(-10, 10))
>>> first_index_numba(5, np.arange(-10, 10))


Even though Nico Schlömer already provided some benchmarks I thought it might be useful to include my new solutions and to test for different "values".

The test setup:

import numpy as np
import math
import numba as nb

def first_index_using_argmax(val, arr):
    return np.argmax(arr > val)

def first_index_using_where(val, arr):
    return np.where(arr > val)[0][0]

def first_index_using_nonzero(val, arr):
    return np.nonzero(arr > val)[0][0]

def first_index_using_searchsorted(val, arr):
    return np.searchsorted(arr, val) + 1

def first_index_using_min(val, arr):
    return np.min(np.where(arr > val))

def first_index_calculate_range_like(val, arr):
    if len(arr) == 0:
        raise ValueError('empty array')
    elif len(arr) == 1:
        if arr[0] > val:
            return 0
            raise ValueError('no value greater than {}'.format(val))

    first_value = arr[0]
    step = arr[1] - first_value
    if step <= 0:
        if first_value > val:
            return 0
            raise ValueError('no value greater than {}'.format(val))

    calculated_position = (val - first_value) / step

    if calculated_position < 0:
        return 0
    elif calculated_position > len(arr) - 1:
        raise ValueError('no value greater than {}'.format(val))

    return int(calculated_position) + 1

def first_index_numba(val, arr):
    for idx in range(len(arr)):
        if arr[idx] > val:
            return idx
    return -1

funcs = [

from simple_benchmark import benchmark, MultiArgument

and the plots were generated using:

%matplotlib notebook

item is at the beginning

b = benchmark(
    {2**i: MultiArgument([0, np.arange(2**i)]) for i in range(2, 20)},
    argument_name="array size")

enter image description here

The numba function performs best followed by the calculate-function and the searchsorted function. The other solutions perform much worse.

item is at the end

b = benchmark(
    {2**i: MultiArgument([2**i-2, np.arange(2**i)]) for i in range(2, 20)},
    argument_name="array size")

enter image description here

For small arrays the numba function performs amazingly fast, however for bigger arrays it's outperformed by the calculate-function and the searchsorted function.

item is at sqrt(len)

b = benchmark(
    {2**i: MultiArgument([np.sqrt(2**i), np.arange(2**i)]) for i in range(2, 20)},
    argument_name="array size")

enter image description here

This is more interesting. Again numba and the calculate function perform great, however this is actually triggering the worst case of searchsorted which really doesn't work well in this case.

Comparison of the functions when no value satisfies the condition

Another interesting point is how these function behave if there is no value whose index should be returned:

arr = np.ones(100)
value = 2

for func in funcs:
        print('-->', func(value, arr))
    except Exception as e:
        print('-->', e)

With this result:

--> 0
--> zero-size array to reduction operation minimum which has no identity
--> index 0 is out of bounds for axis 0 with size 0
--> no value greater than 2
--> -1
--> 101
--> index 0 is out of bounds for axis 0 with size 0

Searchsorted, argmax, and numba simply return a wrong value. However searchsorted and numba return an index that is not a valid index for the array.

The functions where, min, nonzero and calculate throw an exception. However only the exception for calculate actually says anything helpful.

That means one actually has to wrap these calls in an appropriate wrapper function that catches exceptions or invalid return values and handle appropriately, at least if you aren't sure if the value could be in the array.

Note: The calculate and searchsorted options only work in special conditions. The "calculate" function requires a constant step and the searchsorted requires the array to be sorted. So these could be useful in the right circumstances but aren't general solutions for this problem. In case you're dealing with sorted Python lists you might want to take a look at the bisect module instead of using Numpys searchsorted.

Formatting dates on X axis in ggplot2

To show months as Jan 2017 Feb 2017 etc:

scale_x_date(date_breaks = "1 month", date_labels =  "%b %Y") 

Angle the dates if they take up too much space:

theme(axis.text.x=element_text(angle=60, hjust=1))

Oracle: SQL select date with timestamp

Answer provided by Nicholas Krasnov


Re-sign IPA (iPhone)

If you have an app with extensions and/or a watch app and you have multiple provisioning profiles for each extension/watch app then you should use this script to re-sign the ipa file.

Re-signing script at Github

Here is an example of how to use this script:

./ YourApp.ipa "iPhone Distribution: YourCompanyOrDeveloperName" -p <path_to_provisioning_profile_for_app>.mobileprovision -p <path_to_provisioning_profile_for_watchkitextension>.mobileprovision -p <path_to_provisioning_profile_for_watchkitapp>.mobileprovision -p <path_to_provisioning_profile_for_todayextension>.mobileprovision  resignedYourApp.ipa

You can include other extension provisioning profiles too by adding it with yet another -p option.

For me - all the provisioning profiles were signed by the same certificate/signing identity.

Case-insensitive search

You can make everything lowercase:

var string="Stackoverflow is the BEST";
var searchstring="best";
var result= (string.toLowerCase()).search((searchstring.toLowerCase()));

ipad safari: disable scrolling, and bounce effect?

For those who are using MyScript the Web App and are struggling with the body scrolling/dragging (on iPad and Tablets) instead of actually writing:

<body touch-action="none" unresolved>

That fixed it for me.

Integer.valueOf() vs. Integer.parseInt()

The difference between these two methods is:

  • parseXxx() returns the primitive type
  • valueOf() returns a wrapper object reference of the type.

Overlay with spinner

And for a spinner like iOs I use this:

enter image description here


  <div class='spinner'>


.spinner {
  font-size: 30px;
  position: relative;
  display: inline-block;
  width: 1em;
  height: 1em;

.spinner div {
  position: absolute;
  left: 0.4629em;
  bottom: 0;
  width: 0.074em;
  height: 0.2777em;
  border-radius: 0.5em;
  background-color: transparent;
  -webkit-transform-origin: center -0.2222em;
      -ms-transform-origin: center -0.2222em;
          transform-origin: center -0.2222em;
  -webkit-animation: spinner-fade 1s infinite linear;
          animation: spinner-fade 1s infinite linear;
.spinner div:nth-child(1) {
  -webkit-animation-delay: 0s;
          animation-delay: 0s;
  -webkit-transform: rotate(0deg);
      -ms-transform: rotate(0deg);
          transform: rotate(0deg);
.spinner div:nth-child(2) {
  -webkit-animation-delay: 0.083s;
          animation-delay: 0.083s;
  -webkit-transform: rotate(30deg);
      -ms-transform: rotate(30deg);
          transform: rotate(30deg);
.spinner div:nth-child(3) {
  -webkit-animation-delay: 0.166s;
          animation-delay: 0.166s;
  -webkit-transform: rotate(60deg);
      -ms-transform: rotate(60deg);
          transform: rotate(60deg);
.spinner div:nth-child(4) {
  -webkit-animation-delay: 0.249s;
          animation-delay: 0.249s;
  -webkit-transform: rotate(90deg);
      -ms-transform: rotate(90deg);
          transform: rotate(90deg);
.spinner div:nth-child(5) {
  -webkit-animation-delay: 0.332s;
          animation-delay: 0.332s;
  -webkit-transform: rotate(120deg);
      -ms-transform: rotate(120deg);
          transform: rotate(120deg);
.spinner div:nth-child(6) {
  -webkit-animation-delay: 0.415s;
          animation-delay: 0.415s;
  -webkit-transform: rotate(150deg);
      -ms-transform: rotate(150deg);
          transform: rotate(150deg);
.spinner div:nth-child(7) {
  -webkit-animation-delay: 0.498s;
          animation-delay: 0.498s;
  -webkit-transform: rotate(180deg);
      -ms-transform: rotate(180deg);
          transform: rotate(180deg);
.spinner div:nth-child(8) {
  -webkit-animation-delay: 0.581s;
          animation-delay: 0.581s;
  -webkit-transform: rotate(210deg);
      -ms-transform: rotate(210deg);
          transform: rotate(210deg);
.spinner div:nth-child(9) {
  -webkit-animation-delay: 0.664s;
          animation-delay: 0.664s;
  -webkit-transform: rotate(240deg);
      -ms-transform: rotate(240deg);
          transform: rotate(240deg);
.spinner div:nth-child(10) {
  -webkit-animation-delay: 0.747s;
          animation-delay: 0.747s;
  -webkit-transform: rotate(270deg);
      -ms-transform: rotate(270deg);
          transform: rotate(270deg);
.spinner div:nth-child(11) {
  -webkit-animation-delay: 0.83s;
          animation-delay: 0.83s;
  -webkit-transform: rotate(300deg);
      -ms-transform: rotate(300deg);
          transform: rotate(300deg);
.spinner div:nth-child(12) {
  -webkit-animation-delay: 0.913s;
          animation-delay: 0.913s;
  -webkit-transform: rotate(330deg);
      -ms-transform: rotate(330deg);
          transform: rotate(330deg);

@-webkit-keyframes spinner-fade {
  0% {
    background-color: #69717d;
  100% {
    background-color: transparent;

@keyframes spinner-fade {
  0% {
    background-color: #69717d;
  100% {
    background-color: transparent;

get from this website :

Cannot stop or restart a docker container

I couldn't locate boot2docker in my machine. So, I came up with something that worked for me.

$ sudo systemctl restart docker.socket docker.service
$ docker rm -f <container id>

Check if it helps you as well.

transform object to array with lodash

If you want some custom mapping (like original of Object into an Array, you can just use _.forEach:

let myObject = {
  key1: "value1",
  key2: "value2",
  // ...

let myNewArray = [];

_.forEach(myObject, (value, key) => {
    someNewKey: key,
    someNewValue: value.toUpperCase() // just an example of new value based on original value

// myNewArray => [{ someNewKey: key1, someNewValue: 'VALUE1' }, ... ];

See lodash doc of _.forEach

Using GPU from a docker container?

Ok i finally managed to do it without using the --privileged mode.

I'm running on ubuntu server 14.04 and i'm using the latest cuda (6.0.37 for linux 13.04 64 bits).


Install nvidia driver and cuda on your host. (it can be a little tricky so i will suggest you follow this guide

ATTENTION : It's really important that you keep the files you used for the host cuda installation

Get the Docker Daemon to run using lxc

We need to run docker daemon using lxc driver to be able to modify the configuration and give the container access to the device.

One time utilization :

sudo service docker stop
sudo docker -d -e lxc

Permanent configuration Modify your docker configuration file located in /etc/default/docker Change the line DOCKER_OPTS by adding '-e lxc' Here is my line after modification

DOCKER_OPTS="--dns --dns -e lxc"

Then restart the daemon using

sudo service docker restart

How to check if the daemon effectively use lxc driver ?

docker info

The Execution Driver line should look like that :

Execution Driver: lxc-1.0.5

Build your image with the NVIDIA and CUDA driver.

Here is a basic Dockerfile to build a CUDA compatible image.

FROM ubuntu:14.04

RUN apt-get update && apt-get install -y build-essential
RUN apt-get --purge remove -y nvidia*

ADD ./Downloads/nvidia_installers /tmp/nvidia                             > Get the install files you used to install CUDA and the NVIDIA drivers on your host
RUN /tmp/nvidia/ -s -N --no-kernel-module   > Install the driver.
RUN rm -rf /tmp/selfgz7                                                   > For some reason the driver installer left temp files when used during a docker build (i don't have any explanation why) and the CUDA installer will fail if there still there so we delete them.
RUN /tmp/nvidia/ -noprompt            > CUDA driver installer.
RUN /tmp/nvidia/ -noprompt -cudaprefix=/usr/local/cuda-6.0   > CUDA samples comment if you don't want them.
RUN export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:/usr/local/cuda/lib64         > Add CUDA library into your PATH
RUN touch /etc/                                     > Update the directory
RUN rm -rf /temp/*  > Delete installer files.

Run your image.

First you need to identify your the major number associated with your device. Easiest way is to do the following command :

ls -la /dev | grep nvidia

If the result is blank, use launching one of the samples on the host should do the trick. The result should look like that enter image description here As you can see there is a set of 2 numbers between the group and the date. These 2 numbers are called major and minor numbers (wrote in that order) and design a device. We will just use the major numbers for convenience.

Why do we activated lxc driver? To use the lxc conf option that allow us to permit our container to access those devices. The option is : (i recommend using * for the minor number cause it reduce the length of the run command)

--lxc-conf='lxc.cgroup.devices.allow = c [major number]:[minor number or *] rwm'

So if i want to launch a container (Supposing your image name is cuda).

docker run -ti --lxc-conf='lxc.cgroup.devices.allow = c 195:* rwm' --lxc-conf='lxc.cgroup.devices.allow = c 243:* rwm' cuda

RecyclerView - How to smooth scroll to top of item on a certain position?

  1. Extend "LinearLayout" class and override the necessary functions
  2. Create an instance of the above class in your fragment or activity
  3. Call "recyclerView.smoothScrollToPosition(targetPosition)

CustomLinearLayout.kt :

class CustomLayoutManager(private val context: Context, layoutDirection: Int):
  LinearLayoutManager(context, layoutDirection, false) {

    companion object {
      // This determines how smooth the scrolling will be
      const val MILLISECONDS_PER_INCH = 300f

    override fun smoothScrollToPosition(recyclerView: RecyclerView, state: RecyclerView.State, position: Int) {

      val smoothScroller: LinearSmoothScroller = object: LinearSmoothScroller(context) {

        fun dp2px(dpValue: Float): Int {
          val scale = context.resources.displayMetrics.density
          return (dpValue * scale + 0.5f).toInt()

        // change this and the return super type to "calculateDyToMakeVisible" if the layout direction is set to VERTICAL
        override fun calculateDxToMakeVisible(view: View ? , snapPreference : Int): Int {
          return super.calculateDxToMakeVisible(view, SNAP_TO_END) - dp2px(50f)

        //This controls the direction in which smoothScroll looks for your view
        override fun computeScrollVectorForPosition(targetPosition: Int): PointF ? {
          return this @CustomLayoutManager.computeScrollVectorForPosition(targetPosition)

        //This returns the milliseconds it takes to scroll one pixel.
        override fun calculateSpeedPerPixel(displayMetrics: DisplayMetrics): Float {
          return MILLISECONDS_PER_INCH / displayMetrics.densityDpi
      smoothScroller.targetPosition = position

Note: The above example is set to HORIZONTAL direction, you can pass VERTICAL/HORIZONTAL during initialization.

If you set the direction to VERTICAL you should change the "calculateDxToMakeVisible" to "calculateDyToMakeVisible" (also mind the supertype call return value)

Activity/Fragment.kt :

smoothScrollerLayoutManager = CustomLayoutManager(context, LinearLayoutManager.HORIZONTAL)
recyclerView.layoutManager = smoothScrollerLayoutManager
fun onClick() {
  // targetPosition passed from the adapter to activity/fragment

How can I remove the "No file chosen" tooltip from a file input in Chrome?

The best solution, for me, is to wrap input [type="file"] in a wrapper, and add some jquery code:

 function readURL(input){_x000D_
        if (input.files && input.files[0]){_x000D_
            var reader = new FileReader();_x000D_
            reader.onload = function (e){_x000D_
 position: absolute;_x000D_
 top: 0;_x000D_
 left: 0;_x000D_
 opacity: 0;_x000D_
 width: 75px;_x000D_
 height: 35px;_x000D_
 position: relative;_x000D_
 top: 30px;_x000D_
 left: 70px;_x000D_
 position: relative;_x000D_
 width: 75px;_x000D_
 height: 35px;_x000D_
 border: 1px solid #000;_x000D_
 border-radius: 5px;_x000D_
 font-size: 1.5em;_x000D_
 text-align: center;_x000D_
 line-height: 34px;_x000D_
<form action="#" method="post" id="form" >_x000D_
 <div class="button">_x000D_
  Upload<input type="file" id="image" />_x000D_
     <img id="uploadImage" src="#" alt="your image" width="350" height="300" />_x000D_

What is the difference between children and childNodes in JavaScript?

Element.children returns only element children, while Node.childNodes returns all node children. Note that elements are nodes, so both are available on elements.

I believe childNodes is more reliable. For example, MDC (linked above) notes that IE only got children right in IE 9. childNodes provides less room for error by browser implementors.

How can I get the executing assembly version?

This should do:

Assembly assem = Assembly.GetExecutingAssembly();
AssemblyName aName = assem.GetName();
return aName.Version.ToString();

Now() function with time trim

You could also use Format$(Now(), "Short Date") or whatever date format you want. Be aware, this function will return the Date as a string, so using Date() is a better approach.

String comparison in Python: is vs. ==

I would like to show a little example on how is and == are involved in immutable types. Try that:

a = 19998989890
b = 19998989889 +1
>>> a is b
>>> a == b

is compares two objects in memory, == compares their values. For example, you can see that small integers are cached by Python:

c = 1
b = 1
>>> b is c

You should use == when comparing values and is when comparing identities. (Also, from an English point of view, "equals" is different from "is".)

m2e lifecycle-mapping not found

The org.eclipse.m2e:lifecycle-mapping plugin doesn't exist actually. It should be used from the <build><pluginManagement> section of your pom.xml. That way, it's not resolved by Maven but can be read by m2e.

But a more practical solution to your problem would be to install the m2e build-helper connector in eclipse. You can install it from the Window > Preferences > Maven > Discovery > Open Catalog. That way build-helper-maven-plugin:add-sources would be called in eclipse without having you to change your pom.xml.

Bootstrap modal: close current, open new

I use another way:

$('#showModal').on('', function() {
        $('#easyModal').on('', function() {

How to tell which commit a tag points to in Git?

i'd also like to know the right way, but you can always peek either into:

$ cat .git/packed-refs 


$ cat .git/refs/tags/*

jQuery UI Dialog OnBeforeUnload

This works for me:

window.addEventListener("beforeunload", function(event) {_x000D_
  event.returnValue = "You may have unsaved Data";_x000D_

Favorite Visual Studio keyboard shortcuts

Use Emacs-like keybinding, it's TAB :P

How to validate phone numbers using regex

I wrote simpliest (although i didn't need dot in it).

^([0-9\(\)\/\+ \-]*)$

As mentioned below, it checks only for characters, not its structure/order

Tar error: Unexpected EOF in archive

May be you have ftped the file in ascii mode instead of binary mode ? If not, this might help.

$ gunzip myarchive.tar.gz

And then untar the resulting tar file using

$ tar xvf myarchive.tar

Hope this helps.

Reading DataSet

If this is from a SQL Server datebase you could issue this kind of query...

Select Top 1 DepartureTime From TrainSchedule where DepartureTime > 
Order By DepartureTime ASC

GetDate() could also be used, not sure how dates are being stored.

I am not sure how the data is being stored and/or read.

How to select all instances of a variable and edit variable name in Sublime

It's mentioned by @watsonic that in Sublime Text 3 on Mac OS, starting with an empty selection, simply ^?G (AltF3 on Windows) does the trick, instead of ?D + ^?G in Sublime Text 2.

What are the differences between LDAP and Active Directory?

LDAP is a standard, AD is Microsoft's (proprietary) implementation (and more). Wikipedia has a good article that delves into the specifics. I found this document with a very detailed evaluation of AD from an LDAP perspective.

Java path..Error of jvm.cfg

i also had the same issue due to one more instance of java,javaw and javaws in C:\Windows\System32 which was pointing to jre6 and my default location of jre was pointing to this(C:\Windows\System32) location. Even having jdk 1.8 as my JAVA_HOME location i were getting this problem. so either remove or rename java,javaw and javaws it will work. enter image description here

Create or update mapping in elasticsearch

Please note that there is a mistake in the url provided in this answer:

For a PUT mapping request: the url should be as follows:


and NOT


HowTo Generate List of SQL Server Jobs and their owners

It's better to use SUSER_SNAME() since when there is no corresponding login on the server the join to syslogins will not match

        SUSER_SNAME(s.owner_sid) AS owner
FROM    msdb..sysjobs s 

mysqli_real_connect(): (HY000/2002): No such file or directory

I fixed the issue today using the steps below:

  1. If does not exists in phpMyadmin directory Copy to

  2. Add socket to /* Server parameters */

    $cfg['Servers'][$i]['socket'] = '/tmp/mysql.sock';
  3. Save the file and access phpmyadmin through url.

If you are using the mysql 8.0.12 you should use legacy password encryption as the strong encryption is not supported by the php client. enter image description here

Fastest way to copy a file in Node.js

Same mechanism, but this adds error handling:

function copyFile(source, target, cb) {
  var cbCalled = false;

  var rd = fs.createReadStream(source);
  rd.on("error", function(err) {
  var wr = fs.createWriteStream(target);
  wr.on("error", function(err) {
  wr.on("close", function(ex) {

  function done(err) {
    if (!cbCalled) {
      cbCalled = true;

How to debug a Flask app

Running the app in development mode will show an interactive traceback and console in the browser when there is an error. To run in development mode, set the FLASK_ENV=development environment variable then use the flask run command (remember to point FLASK_APP to your app as well).

For Linux, Mac, Linux Subsystem for Windows, Git Bash on Windows, etc.:

export FLASK_APP=myapp
export FLASK_ENV=development
flask run

For Windows CMD, use set instead of export:

set FLASK_ENV=development

For PowerShell, use $env:

$env:FLASK_ENV = "development"

Prior to Flask 1.0, this was controlled by the FLASK_DEBUG=1 environment variable instead.

If you're using the method instead of the flask run command, pass debug=True to enable debug mode.

Tracebacks are also printed to the terminal running the server, regardless of development mode.

If you're using PyCharm, VS Code, etc., you can take advantage of its debugger to step through the code with breakpoints. The run configuration can point to a script calling, use_reloader=False), or point it at the venv/bin/flask script and use it as you would from the command line. You can leave the reloader disabled, but a reload will kill the debugging context and you will have to catch a breakpoint again.

You can also use pdb, pudb, or another terminal debugger by calling set_trace in the view where you want to start debugging.

Be sure not to use too-broad except blocks. Surrounding all your code with a catch-all try... except... will silence the error you want to debug. It's unnecessary in general, since Flask will already handle exceptions by showing the debugger or a 500 error and printing the traceback to the console.

Finding Number of Cores in Java

This is an additional way to find out the number of CPU cores (and a lot of other information), but this code requires an additional dependence:

Native Operating System and Hardware Information

SystemInfo systemInfo = new SystemInfo();
HardwareAbstractionLayer hardwareAbstractionLayer = systemInfo.getHardware();
CentralProcessor centralProcessor = hardwareAbstractionLayer.getProcessor();

Get the number of logical CPUs available for processing:


heroku - how to see all the logs

I prefer to do it this way

heroku logs --tail | tee -a herokuLogs

You can leave the script running in background and you can simply filter the logs from the text file the way you want anytime.

Insert a background image in CSS (Twitter Bootstrap)

Adding background image on html, body or a wrapper element to achieve background image will cause problems with padding. Check this ticket on github. ShaunR's comment and also one of the creators response to this. The given solution in created ticket doesn't solve the problem, but it at least gets things going if you aren't using responsive features.

Assuming that you are using container without responsive features, and have a width of 960px, and want to achieve 10px padding, you set:

.container {
   min-width: 940px;
   padding: 10px;

difference between new String[]{} and new String[] in java

You have a choice, when you create an object array (as opposed to an array of primitives).

One option is to specify a size for the array, in which case it will just contain lots of nulls.

String[] array = new String[10]; // Array of size 10, filled with nulls.

The other option is to specify what will be in the array.

String[] array = new String[] {"Larry", "Curly", "Moe"};  // Array of size 3, filled with stooges.

But you can't mix the two syntaxes. Pick one or the other.

Is it possible that one domain name has multiple corresponding IP addresses?

This is round robin DNS. This is a quite simple solution for load balancing. Usually DNS servers rotate/shuffle the DNS records for each incoming DNS request. Unfortunately it's not a real solution for fail-over. If one of the servers fail, some visitors will still be directed to this failed server.

fastest way to export blobs from table into individual files

I came here looking for exporting blob into file with least effort. CLR functions is not something what I'd call least effort. Here described lazier one, using OLE Automation:

declare @init int
declare @file varbinary(max) = CONVERT(varbinary(max), N'your blob here')
declare @filepath nvarchar(4000) = N'c:\temp\you file name here.txt'

EXEC sp_OACreate 'ADODB.Stream', @init OUTPUT; -- An instace created
EXEC sp_OASetProperty @init, 'Type', 1; 
EXEC sp_OAMethod @init, 'Open'; -- Calling a method
EXEC sp_OAMethod @init, 'Write', NULL, @file; -- Calling a method
EXEC sp_OAMethod @init, 'SaveToFile', NULL, @filepath, 2; -- Calling a method
EXEC sp_OAMethod @init, 'Close'; -- Calling a method
EXEC sp_OADestroy @init; -- Closed the resources

You'll potentially need to allow to run OA stored procedures on server (and then turn it off, when you're done):

sp_configure 'show advanced options', 1;  
sp_configure 'Ole Automation Procedures', 1;  

Font awesome is not showing icon

For those of you using SCSS and the NPM package, here is my solution:

npm i --save @fortawesome/fontawesome-free

Then at the top of an SCSS file (ideally an SCSS file imported at the root of your application):

@import '@fortawesome/fontawesome-free/css/fontawesome.css';
@import '@fortawesome/fontawesome-free/css/all.css';

Laravel Eloquent: How to get only certain columns from joined tables

For Laravel >= 5.2

Use the ->pluck() method

$roles = DB::table('roles')->pluck('title');

If you would like to retrieve an array containing the values of a single column, you may use the pluck method

For Laravel <= 5.1

Use the ->lists() method

$roles = DB::table('roles')->lists('title');

This method will return an array of role titles. You may also specify a custom key column for the returned array:

Underscore prefix for property and method names in JavaScript

JSDoc 3 allows you to annotate your functions with the @access private (previously the @private tag) which is also useful for broadcasting your intent to other developers -

convert big endian to little endian in C [without using provided func]

Here's a fairly generic version; I haven't compiled it, so there are probably typos, but you should get the idea,

void SwapBytes(void *pv, size_t n)
    assert(n > 0);

    char *p = pv;
    size_t lo, hi;
    for(lo=0, hi=n-1; hi>lo; lo++, hi--)
        char tmp=p[lo];
        p[lo] = p[hi];
        p[hi] = tmp;
#define SWAP(x) SwapBytes(&x, sizeof(x));

NB: This is not optimised for speed or space. It is intended to be clear (easy to debug) and portable.

Update 2018-04-04 Added the assert() to trap the invalid case of n == 0, as spotted by commenter @chux.

How to make picturebox transparent?

One fast solution is set image property for image1 and set backgroundimage property to imag2, the only inconvenience is that you have the two images inside the picture box, but you can change background properties to tile, streched, etc. Make sure that backcolor be transparent. Hope this helps

How to position a CSS triangle using ::after?

Add a class:

.com_box:after {
     content: '';
    position: absolute;
    left: 18px;
    top: 50px;
    width: 0;
    height: 0;
    border-left: 20px solid transparent;
    border-right: 20px solid transparent;
    border-top: 20px solid #000;
    clear: both;


Updated your jsfiddle:

Can a div have multiple classes (Twitter Bootstrap)

Absolutely, divs can have more than one class and with some Bootstrap components you'll often need to have multiple classes for them to function as you want them to. Applying multiple classes of course is possible outside of bootstrap as well. All you have to do is separate each class with a space.

Example below:

<label class="checkbox inline">
   <input type="checkbox" id="inlineCheckbox1" value="option1"> 1

Git Pull is Not Possible, Unmerged Files

Say the remote is origin and the branch is master, and say you already have master checked out, might try the following:

git fetch origin
git reset --hard origin/master

This basically just takes the current branch and points it to the HEAD of the remote branch.

WARNING: As stated in the comments, this will throw away your local changes and overwrite with whatever is on the origin.

Or you can use the plumbing commands to do essentially the same:

git fetch <remote>
git update-ref refs/heads/<branch> $(git rev-parse <remote>/<branch>)
git reset --hard

EDIT: I'd like to briefly explain why this works.

The .git folder can hold the commits for any number of repositories. Since the commit hash is actually a verification method for the contents of the commit, and not just a randomly generated value, it is used to match commit sets between repositories.

A branch is just a named pointer to a given hash. Here's an example set:

$ find .git/refs -type f

Each of these files contains a hash pointing to a commit:

$ cat .git/refs/remotes/origin/master

These are all for the internal git storage mechanism, and work independently of the working directory. By doing the following:

git reset --hard origin/master

git will point the current branch at the same hash value that origin/master points to. Then it forcefully changes the working directory to match the file structure/contents at that hash.

To see this at work go ahead and try out the following:

git checkout -b test-branch
# see current commit and diff by the following
git show HEAD
# now point to another location
git reset --hard <remote>/<branch>
# see the changes again
git show HEAD

Hide Utility Class Constructor : Utility classes should not have a public or default constructor

You can just use Lombok with access level PRIVATE in @NoArgsConstructor annotation to avoid unnecessary initialization.

@NoArgsConstructor(access = AccessLevel.PRIVATE)

public class FilePathHelper {

// your code


Detect whether there is an Internet connection available on Android

The getActiveNetworkInfo() method of ConnectivityManager returns a NetworkInfo instance representing the first connected network interface it can find or null if none of the interfaces are connected. Checking if this method returns null should be enough to tell if an internet connection is available or not.

private boolean isNetworkAvailable() {
    ConnectivityManager connectivityManager 
          = (ConnectivityManager) getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo activeNetworkInfo = connectivityManager.getActiveNetworkInfo();
    return activeNetworkInfo != null && activeNetworkInfo.isConnected();

You will also need:

<uses-permission android:name="android.permission.ACCESS_NETWORK_STATE" />

in your android manifest.


Note that having an active network interface doesn't guarantee that a particular networked service is available. Network issues, server downtime, low signal, captive portals, content filters and the like can all prevent your app from reaching a server. For instance you can't tell for sure if your app can reach Twitter until you receive a valid response from the Twitter service.

Bitbucket fails to authenticate on git pull

I needed to do this and run a git pull in order to set my password from the command line in order to get this working.

Note this method saves your password in a plain text file on your disk:

git config --global credential.helper store
git pull

Other solutions here: Is there a way to skip password typing when using https:// on GitHub?

No connection string named 'MyEntities' could be found in the application config file

copy connection string to app.config or web.config file in the project which has set to "Set as StartUp Project" and if in the case of using entity framework in data layer project - please install entity framework nuget in main project.

Check if item is in an array / list

Assuming you mean "list" where you say "array", you can do

if item in my_list:
    # whatever

This works for any collection, not just for lists. For dictionaries, it checks whether the given key is present in the dictionary.

Tomcat 8 is not able to handle get request with '|' in query parameters?

Since Tomcat 7.0.76, 8.0.42, 8.5.12 you can define property requestTargetAllow to allow forbiden characters.

Add this line in your


Convert Text to Uppercase while typing in Text box

set your CssClass property in textbox1 to "cupper", then in page content create new css class :

<style type="text/css">.cupper {text-transform:uppercase;}</style>

Then, enjoy it ...

Android custom Row Item for ListView

Add this row.xml to your layout folder

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android=""
    android:orientation="vertical" >
<TextView android:layout_width="wrap_content"


make your main xml layout as this

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android=""
    android:orientation="horizontal" >

        android:layout_height="fill_parent" >


This is your adapter

class yourAdapter extends BaseAdapter {

    Context context;
    String[] data;
    private static LayoutInflater inflater = null;

    public yourAdapter(Context context, String[] data) {
        // TODO Auto-generated constructor stub
        this.context = context; = data;
        inflater = (LayoutInflater) context

    public int getCount() {
        // TODO Auto-generated method stub
        return data.length;

    public Object getItem(int position) {
        // TODO Auto-generated method stub
        return data[position];

    public long getItemId(int position) {
        // TODO Auto-generated method stub
        return position;

    public View getView(int position, View convertView, ViewGroup parent) {
        // TODO Auto-generated method stub
        View vi = convertView;
        if (vi == null)
            vi = inflater.inflate(R.layout.row, null);
        TextView text = (TextView) vi.findViewById(;
        return vi;

Your java activity

public class StackActivity extends Activity {

    ListView listview;

    /** Called when the activity is first created. */
    public void onCreate(Bundle savedInstanceState) {
        listview = (ListView) findViewById(;
        listview.setAdapter(new yourAdapter(this, new String[] { "data1",
                "data2" }));

the results

enter image description here

How do you specify table padding in CSS? ( table, not cell padding )

You can't... Maybe if you posted a picture of the desired effect there's another way to achieve it.

For example, you can wrap the entire table in a DIV and set the padding to the div.

How do I set <table> border width with CSS?

Doing borders on tables with css is a bit more complicated (but not as much, see this jsfiddle as example):

table {_x000D_
  border-collapse: collapse;_x000D_
  border: 1px solid black;_x000D_
table td {_x000D_
  border: 1px solid black;_x000D_

Add content to a new open window

in parent.html:

<script type="text/javascript">
    $(document).ready(function () {
        var output = "data";
        var OpenWindow ="child.html", "mywin", '');
        OpenWindow.dataFromParent = output; // dataFromParent is a variable in child.html

in child.html:

<script type="text/javascript">
    var dataFromParent;    
    function init() {

Why can't a text column have a default value in MySQL?

I normally run sites on Linux, but I also develop on a local Windows machine. I've run into this problem many times and just fixed the tables when I encountered the problems. I installed an app yesterday to help someone out and of course ran into the problem again. So, I decided it was time to figure out what was going on - and found this thread. I really don't like the idea of changing the sql_mode of the server to an earlier mode (by default), so I came up with a simple (me thinks) solution.

This solution would of course require developers to wrap their table creation scripts to compensate for the MySQL issue running on Windows. You'll see similar concepts in dump files. One BIG caveat is that this could/will cause problems if partitioning is used.

// Store the current sql_mode
mysql_query("set @orig_mode = @@global.sql_mode");

// Set sql_mode to one that won't trigger errors...
mysql_query('set @@global.sql_mode = "MYSQL40"');

 * Do table creations here...

// Change it back to original sql_mode
mysql_query('set @@global.sql_mode = @orig_mode');

That's about it.

LaTeX package for syntax highlighting of code in various languages

I recommend Pygments. It accepts a piece of code in any language and outputs syntax highlighted LaTeX code. It uses fancyvrb and color packages to produce its output. I personally prefer it to the listing package. I think fancyvrb creates much prettier results.

Shortcut key for commenting out lines of Python code in Spyder

  • Single line comment

    Ctrl + 1

  • Multi-line comment select the lines to be commented

    Ctrl + 4

  • Unblock Multi-line comment

    Ctrl + 5

When to use Hadoop, HBase, Hive and Pig?

Cleansing Data in Pig is very easy,a suitable approach would be cleansing data through pig and then processing data through hive and later uploading it to hdfs.

Can I add a custom attribute to an HTML tag?

Yes, you can, you did it in the question itself: <html myAttri="myVal"/>.

Jquery, Clear / Empty all contents of tbody element?

Example for Remove table header or table body with jquery

function removeTableHeader(){_x000D_
  $('#myTableId thead').empty();_x000D_
function removeTableBody(){_x000D_
    $('#myTableId tbody').empty();_x000D_
<script src=""></script>_x000D_
<table id='myTableId'  border="1">_x000D_
    <th>1st heading</th>_x000D_
    <th>2nd heading</th>_x000D_
    <th>3rd heading</th>_x000D_
  </thead>  _x000D_
      <td>1st content</td>_x000D_
      <td>1st content</td>_x000D_
      <td>1st content</td>_x000D_
      <td>2nd content</td>_x000D_
      <td>2nd content</td>_x000D_
      <td>2nd content</td>_x000D_
      <td>3rd content</td>_x000D_
      <td>3rd content</td>_x000D_
      <td>3rd content</td>_x000D_
  <input type='button' value='Remove Table Header' onclick='removeTableHeader()'/>_x000D_
  <input type='button' value='Remove Table Body' onclick='removeTableBody()'/>_x000D_

How do I make a Windows batch script completely silent?

Copies a directory named html & all its contents to a destination directory in silent mode. If the destination directory is not present it will still create it.

@echo off
TITLE Copy Folder with Contents

set SOURCE=C:\labs
set DESTINATION=C:\Users\MyUser\Desktop\html

xcopy %SOURCE%\html\* %DESTINATION%\* /s /e /i /Y >NUL

  1. /S Copies directories and subdirectories except empty ones.

  2. /E Copies directories and subdirectories, including empty ones. Same as /S /E. May be used to modify /T.

  3. /I If destination does not exist and copying more than one file, assumes that destination must be a directory.

  4. /Y Suppresses prompting to confirm you want to overwrite an existing destination file.

Is mathematics necessary for programming?

For your general GUI and Web applications only basic mathematics knowledge will ever be needed.

Once a lifetime you might have an odd project where you need calculus or linear algebra.

(If you do 3D game programming or some other specific field of programming, you might need it everyday thou)

SignalR Console app example

This is for dot net core 2.1 - after a lot of trial and error I finally got this to work flawlessly:

var url = "Hub URL goes here";

var connection = new HubConnectionBuilder()
    .WithAutomaticReconnect() //I don't think this is totally required, but can't hurt either

//Start the connection
var t = connection.StartAsync();

//Wait for the connection to complete

//Make your call - but in this case don't wait for a response 
//if your goal is to set it and forget it
await connection.InvokeAsync("SendMessage", "User-Server", "Message from the server");

This code is from your typical SignalR poor man's chat client. The problem that I and what seems like a lot of other people have run into is establishing a connection before attempting to send a message to the hub. This is critical, so it is important to wait for the asynchronous task to complete - which means we are making it synchronous by waiting for the task to complete.

Find PHP version on windows command line

Easy Method is: Just copy the file cmd.exe from c:/windows/system32/ and paste it to C:\xampp\php\ and run it, when the cmd opens type " php -v " without quotes and hit enter... you will get your php version.. thank you

Hide Signs that Meteor.js was Used

The amount of hacks you would need to go through to completely hide the fact your site is built by Meteor.js is absolutely ridiculous. You would have to strip essentially all core functionality and just serve straight up html, completely defeating the purpose of using the framework anyway.

That being said, I suggest looking at

You enter a url, and it reveals a ton of information about a site. If you only need to "fool" engines like this, there may be simple solutions.

IE11 prevents ActiveX from running

Does IE11 displays any message relative to the blocked execution of your ActiveX ?

You should read this and this.

Use the following JS function to detect support of ActiveX :

function IsActiveXSupported() {
    var isSupported = false;

    if(window.ActiveXObject) {
        return true;

    if("ActiveXObject" in window) {
        return true;

    try {
        var xmlDom = new ActiveXObject("Microsoft.XMLDOM");
        isSupported = true;
    } catch (e) {
        if ( === "TypeError" || === "Error") {
            isSupported = true;

    return isSupported;

How to obtain the start time and end time of a day?

Shortest answer, given your timezone being TZ:

LocalDateTime start =
LocalDateTime end = start.plusDays(1)

Compare using isAfter() and isBefore() methods, or convert it using toEpochSecond() or toInstant() methods.

How can I reverse the order of lines in a file?

The simplest method is using the tac command. tac is cat's inverse. Example:

$ cat order.txt
roger shah 
armin van buuren
fpga vhdl arduino c++ java gridgain
$ tac order.txt > inverted_file.txt
$ cat inverted_file.txt
fpga vhdl arduino c++ java gridgain
armin van buuren
roger shah 

What is the proper use of an EventEmitter?

When you want to have cross component interaction, then you need to know what are @Input , @Output , EventEmitter and Subjects.

If the relation between components is parent- child or vice versa we use @input & @output with event emitter..

@output emits an event and you need to emit using event emitter.

If it's not parent child relationship.. then you have to use subjects or through a common service.

CSS Equivalent of the "if" statement

CSS itself doesn't have conditional statements, but here's a hack involving custom properties (a.k.a. "css variables").

In this trivial example, you want to apply a padding based on a certain condition—like an "if" statement.

:root   { --is-big: 0; }

.is-big { --is-big: 1; }

.block {
  padding: calc(
    4rem * var(--is-big) +
    1rem * (1 - var(--is-big))

So any .block that's an .is-big or that's a descendant of one will have a padding of 4rem, while all other blocks will only have 1rem. Now I call this a "trivial" example because it can be done without the hack.

.block {
  padding: 1rem;

.is-big .block, {
  padding: 4rem;

But I will leave its applications to your imagination.

Java executors: how to be notified, without blocking, when a task completes?

ThreadPoolExecutor also has beforeExecute and afterExecute hook methods that you can override and make use of. Here is the description from ThreadPoolExecutor's Javadocs.

Hook methods

This class provides protected overridable beforeExecute(java.lang.Thread, java.lang.Runnable) and afterExecute(java.lang.Runnable, java.lang.Throwable) methods that are called before and after execution of each task. These can be used to manipulate the execution environment; for example, reinitializing ThreadLocals, gathering statistics, or adding log entries. Additionally, method terminated() can be overridden to perform any special processing that needs to be done once the Executor has fully terminated. If hook or callback methods throw exceptions, internal worker threads may in turn fail and abruptly terminate.

How can I get my Twitter Bootstrap buttons to right align?

Update 2019 - Bootstrap 4.0.0

The pull-right class is now float-right in Bootstrap 4...

    <div class="row">
        <div class="col-12">One <input type="button" class="btn float-right" value="test"></div>
        <div class="col-12">Two <input type="button" class="btn float-right" value="test"></div>

It's also better to not align the ul list and use block elements for the rows.

Is float-right still not working?

Remember that Bootstrap 4 is now flexbox, and many elements are display:flex which can prevent float-right from working. In some cases, the util classes like align-self-end or ml-auto work to right align elements that are inside a flexbox container like a Bootstrap 4 .row, Card or Nav.

Also remember that text-right still works on inline elements.

Bootstrap 4 align right examples

Bootstrap 3

Use the pull-right class.

Remove border radius from Select tag in bootstrap 3

I had the same issue and while user1732055's answer fixes the border, it removes the dropdown arrows. I solved this by removing the border from the select element and creating a wrapper span which has a border.


<span class="select-wrapper">
    <select class="form-control no-radius">
        <option value="1">1</option>
        <option value="2">2</option>
        <option value="3">3</option>

    border: 1px solid black;
    border-radius: 0px;

How does Facebook Sharer select Images and other metadata when sharing my URL?

Old way, no longer works:

<link rel="image_src" href="http://yoururl/yourimage"/>

Reported new way, also does not work:

<meta property="og:image" content="http://yoururl/yourimage"/>

It randomly worked off and on during the first day I implemented it, hasn't worked at all since.

The Facebook linter page, a utility that inspects your page, reports that everything is correct and does display the thumbnail I selected... just that the share.php page itself doesn't seem to be functioning. Has to be a bug over at Facebook, one they apparently don't care to fix as every bug report regarding this issue I've seen in their system all say resolved or fixed.

Postgres "psql not recognized as an internal or external command"

Even if it is a little bit late, i solved the PATH problem by removing every space.

;C:\Program Files\PostgreSQL\9.5\bin;C:\Program Files\PostgreSQL\9.5\lib

works for me now.

How to hide "Showing 1 of N Entries" with the dataTables.js library

If you also need to disable the drop-down (not to hide the text) then set the lengthChange option to false

$('#datatable').dataTable( {
  "lengthChange": false
} );

Works for DataTables 1.10+

Read more in the official documentation

How do I run two commands in one line in Windows CMD?

With windows 10 you can also use scriptrunner:

ScriptRunner.exe -appvscript demoA.cmd arg1 arg2 -appvscriptrunnerparameters -wait -timeout=30 -rollbackonerror -appvscript demoB.ps1 arg3 arg4 -appvscriptrunnerparameters -wait -timeout=30 -rollbackonerror

it allows you to start few commands on one line you want you can run them consecutive or without waiting each other, you can put timeouts and rollback on error.

Jasmine.js comparing arrays

I had a similar issue where one of the arrays was modified. I was using it for $httpBackend, and the returned object from that was actually a $promise object containing the array (not an Array object).

You can create a jasmine matcher to match the array by creating a toBeArray function:

beforeEach(function() {
  'use strict';
    toBeArray: function(array) {
      this.message = function() {
        return "Expected " + angular.mock.dump(this.actual) + " to be array " + angular.mock.dump(array) + ".";
      var arraysAreSame = function(x, y) {
         var arraysAreSame = true;
         for(var i; i < x.length; i++)
            if(x[i] !== y[i])
               arraysAreSame = false;
         return arraysAreSame;
      return arraysAreSame(this.actual, array);

And then just use it in your tests like the other jasmine matchers:

it('should compare arrays properly', function() {
  var array1, array2;
  /* . . . */

Received fatal alert: handshake_failure through SSLHandshakeException

I have this error while I tried to use JDK 1.7. When I upgraded my JDK to jdk1.8.0_66 all started to work fine.

So the simplest solution for this problem could be - upgrade your JDK and it could start to work well.

What are passive event listeners?

Passive event listeners are an emerging web standard, new feature shipped in Chrome 51 that provide a major potential boost to scroll performance. Chrome Release Notes.

It enables developers to opt-in to better scroll performance by eliminating the need for scrolling to block on touch and wheel event listeners.

Problem: All modern browsers have a threaded scrolling feature to permit scrolling to run smoothly even when expensive JavaScript is running, but this optimization is partially defeated by the need to wait for the results of any touchstart and touchmove handlers, which may prevent the scroll entirely by calling preventDefault() on the event.

Solution: {passive: true}

By marking a touch or wheel listener as passive, the developer is promising the handler won't call preventDefault to disable scrolling. This frees the browser up to respond to scrolling immediately without waiting for JavaScript, thus ensuring a reliably smooth scrolling experience for the user.

document.addEventListener("touchstart", function(e) {
    console.log(e.defaultPrevented);  // will be false
    e.preventDefault();   // does nothing since the listener is passive
    console.log(e.defaultPrevented);  // still false
}, Modernizr.passiveeventlisteners ? {passive: true} : false);

DOM Spec , Demo Video , Explainer Doc

Load image with jQuery and append it to the DOM

Here is the code I use when I want to preload images before appending them to the page.

It is also important to check if the image is already loaded from the cache (for IE).

    //create image to preload:
    var imgPreload = new Image();
        src: photoUrl

    //check if the image is already loaded (cached):
    if (imgPreload.complete || imgPreload.readyState === 4) {

        //image loaded:
        //your code here to insert image into page

    } else {
        //go fetch the image:
        $(imgPreload).load(function (response, status, xhr) {
            if (status == 'error') {

                //image could not be loaded:

            } else {

                //image loaded:
                //your code here to insert image into page


How to Navigate from one View Controller to another using Swift

SWIFT 3.01

let secondViewController = self.storyboard?.instantiateViewController(withIdentifier: "Conversation_VC") as! Conversation_VC
self.navigationController?.pushViewController(secondViewController, animated: true)