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How to make an immutable object in Python?
...variant compared to hand-written analog (even on Python 2.5 (using verbose parameter to namedtuple the code is easily generated)) is the single interface/implementation of a namedtuple is preferrable to dozens ever so slightly different hand-written interfaces/implementations that do almost the sam...
Django in / not in query
...
you should get what you want using:
table1.objects.exclude(table2=some_param)
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How to resize a custom view programmatically?
...ail to pass the height or width of a view.
Instead of creating a new LayoutParams object, use the original one, so that all other set parameters are kept. Note that the type of LayoutParams returned by getLayoutParams is that of the parent layout, not the view you are resizing.
RelativeLayout.Layou...
How can I read a function's signature including default argument values?
...oo)
>>> str(sig)
'(a, *, b:int, **kwargs)'
>>> str(sig.parameters['b'])
'b:int'
>>> sig.parameters['b'].annotation
<class 'int'>
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How to set selected value of jquery select2?
...tID').select2('data', {id: 100, a_key: 'Lorem Ipsum'});
Where the second parameter is an object with expected values.
UPDATE:
This does work, just wanted to note that in the new select2, "a_key" is "text" in a standard select2 object. so: {id: 100, text: 'Lorem Ipsum'}
Example:
$('#all_conta...
Detect network connection type on Android
.../
public class Connectivity {
/**
* Get the network info
* @param context
* @return
*/
public static NetworkInfo getNetworkInfo(Context context){
ConnectivityManager cm = (ConnectivityManager) context.getSystemService(Context.CONNECTIVITY_SERVICE);
return...
In where shall I use isset() and !empty()
... empty string is the bare minimum that you need to verify that an incoming parameter has a value without creating false negatives:
if( isset($_GET['gender']) and ($_GET['gender'] != '') )
{
...
}
But by "bare minimum", I mean exactly that. All the above code does is determine whether there is ...
PHP Redirect with POST data
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/**
* Redirect with POST data.
*
* @param string $url URL.
* @param array $post_data POST data. Example: array('foo' => 'var', 'id' => 123)
* @param array $headers Optional. Extra headers to send.
*/
public function redirect_post($url, array $data, arr...
How to add a new method to a php object on the fly?
...have it return and think it did return successfully. Also, make the first param of the function the object itself, and then do an array_unshift($args, $this); before the method call, so that the function gets a reference to the object without explicitly needing to bind it...
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How to make an array of arrays in Java
...s DOES NOT ensure that the object will be available on next call !
* @param x
* @param y
* @return
* @throws IndexOutOfBoundsException
*/public boolean exists( int x , int y ) throws IndexOutOfBoundsException
{
if( x >= _width || x < 0 )
{
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