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Are PHP Variables passed by value or by reference?
...ave an argument to a function always passed by reference, prepend an ampersand (&) to the argument name in the function definition.
<?php
function add_some_extra(&$string)
{
$string .= 'and something extra.';
}
$str = 'This is a string, ';
add_some_extra($str);
echo $str; // out...
Java - get pixel array from image
...ster().getDataBuffer()).getData();
If you are working with large images and performance is an issue, the first method is absolutely not the way to go. The getRGB() method combines the alpha, red, green and blue values into one int and then returns the result, which in most cases you'll do the rev...
How to force a WPF binding to refresh?
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if you use mvvm and your itemssource is located in your vm. just call INotifyPropertyChanged for your collection property when you want to refresh.
OnPropertyChanged("YourCollectionProperty");
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Get battery level and state in Android
How can I get battery level and state (plugged in, discharging, charging, etc)? I researched the developer docs and I found a BatteryManager class. But it doesn't contain any methods, just constants. How do I even use it?
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How to configure the web.config to allow requests of any length
...ttpRuntime Element (ASP.NET Settings Schema)
Of course the numbers (32768 and 65536) in the config settings above are just examples. You don't have to use those exact values.
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One line ftp server in python
Is it possible to have a one line command in python to do a simple ftp server? I'd like to be able to do this as quick and temporary way to transfer files to a linux box without having to install a ftp server. Preferably a way using built in python libraries so there's nothing extra to install.
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Get the current displaying UIViewController on the screen in AppDelegate.m
...ew does not belong to the root view controller (in the case of modal views and such).
– Dima
Jul 24 '12 at 19:17
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Selectively revert or checkout changes to a file in Git?
Is there a command that allows you to partially undo the changes to a file (or files) in the working directory?
4 Answers
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How do I make a reference to a figure in markdown using pandoc?
I'm currently writing a document in markdown and I'd like to make a reference to an image from my text.
6 Answers
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When is each sorting algorithm used? [closed]
...al keys.
Recommendations:
Quick sort: When you don't need a stable sort and average case performance matters more than worst case performance. A quick sort is O(N log N) on average, O(N^2) in the worst case. A good implementation uses O(log N) auxiliary storage in the form of stack space for re...