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Declaring Multiple Variables in JavaScript
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If you're writing code that you expect to minify or pack later, the second way allows compressors (like the YUI Compressor) to give you a more minified version. If size is a consideration, then I would suggest following as m...
Get $_POST from multiple checkboxes
...lue="value 5">
<input type="submit" />
</form>
<?php
if(!empty($_POST['check_list'])) {
foreach($_POST['check_list'] as $check) {
echo $check; //echoes the value set in the HTML form for each checked checkbox.
//so, if I were to check 1,...
How to re-raise an exception in nested try/except blocks?
I know that if I want to re-raise an exception, I simple use raise without arguments in the respective except block. But given a nested expression like
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Library not loaded: /usr/local/opt/readline/lib/libreadline.6.2.dylib
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Be careful doing this if you aren't already on the latest version of Postgres. You'll need to reinstall the old Postgres alongside the new one and then do a pg_upgrade
– dazonic
Jan 2 '17 at 2:49
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How can I make gdb save the command history?
...s defaults to the value of the environment variable GDBHISTSIZE, or to 256 if this variable is not set. Non-numeric values of GDBHISTSIZE are ignored. If size is unlimited or if GDBHISTSIZE is either a negative number or the empty string, then the number of commands gdb keeps in the history list is ...
SQL - many-to-many table primary key
...uffer, I'll stand by that comment (technically, it's a generalisation only if I say "all tables", "vast majority" is based on experience). Let's also think about your example, an order is created once (it may be updated occasionally but that's unlikely to change key/index info, more to hit things li...
How do write IF ELSE statement in a MySQL query
How do I write an IF ELSE statement in a MySQL query?
5 Answers
5
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How to properly add cross-site request forgery (CSRF) token using PHP
...stically
Try this out:
Generating a CSRF Token
PHP 7
session_start();
if (empty($_SESSION['token'])) {
$_SESSION['token'] = bin2hex(random_bytes(32));
}
$token = $_SESSION['token'];
Sidenote: One of my employer's open source projects is an initiative to backport random_bytes() and random_...
php check if array contains all array values from another array
I would like to find out if $all contains all $search_this values and return true or false. any idea please?
5 Answers
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Python - abs vs fabs
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math.fabs() converts its argument to float if it can (if it can't, it throws an exception). It then takes the absolute value, and returns the result as a float.
In addition to floats, abs() also works with integers and complex numbers. Its return type depends on the t...