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How do I delete an exported environment variable?
...our home directory for it. Or, to see where it is being set, try "grep -r <X> ~" where <X> is the name of the variable. This may take a while if you have a lot of files in your home directory.
– matt5784
May 8 '14 at 1:11
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How to save picture to iPhone photo library?
... I am using this code and i am including this framework #import <AssetsLibrary/AssetsLibrary.h> not the AVFoundation. Shouldn't the answer be edited? @Denis
– Julian Osorio
Apr 23 '14 at 20:47
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How can I validate a string to only allow alphanumeric characters in it?
...t has a single argument of the correct type (in this case char).
To use multiple conditions, you need to write like this:
if (yourText.All(x => char.IsLetterOrDigit(x) || char.IsWhiteSpace(x)))
{
}
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error LNK2019: unresolved external symbol _WinMain@16 referenced in function ___tmainCRTStartup
...
Include <tchar.h> which has the line:
#define _tWinMain wWinMain
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follo...
Invert “if” statement to reduce nesting
... of the code clearer. For example:
double getPayAmount() {
double result;
if (_isDead) result = deadAmount();
else {
if (_isSeparated) result = separatedAmount();
else {
if (_isRetired) result = retiredAmount();
else result = normalPayAmount();
...
Loop through an array php
...'];
echo $item['filepath'];
// to know what's in $item
echo '<pre>'; var_dump($item);
}
Using foreach loop with key
foreach($array as $i => $item) {
echo $item[$i]['filename'];
echo $item[$i]['filepath'];
// $array[$i] is same as $item
}
Using for loop
for ($...
Downloading a large file using curl
...
<?php
set_time_limit(0);
//This is the file where we save the information
$fp = fopen (dirname(__FILE__) . '/localfile.tmp', 'w+');
//Here is the file we are downloading, replace spaces with %20
$ch = curl_init(str_repla...
How to push both value and key into PHP array
...
How to add multiple keys and values to an array? for example I have [indexname1] = $value1 and [indexname2] = $value2, and I want to add them to $arrayname
– King Goeks
Oct 30 '13 at 7:59
...
Date vs DateTime
...Create a wrapper class. Something like this:
public class Date:IEquatable<Date>,IEquatable<DateTime>
{
public Date(DateTime date)
{
value = date.Date;
}
public bool Equals(Date other)
{
return other != null && ...
Adding a parameter to the URL with JavaScript
...cument.location.search.substr(1).split('&');
let i=0;
for(; i<kvp.length; i++){
if (kvp[i].startsWith(key + '=')) {
let pair = kvp[i].split('=');
pair[1] = value;
kvp[i] = pair.join('=');
break;
}
}
if(i >= k...