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Remove all subviews?
... situation is muddled up by the fact that NSView and UIView handle things differently. For NSView (desktop Mac development only), you can simply use the following:
[someNSView setSubviews:[NSArray array]];
For UIView (iOS development only), you can safely use makeObjectsPerformSelector: because t...
How to implement a rule engine?
... ExpressionType tBinary;
// is the operator a known .NET operator?
if (ExpressionType.TryParse(r.Operator, out tBinary)) {
var right = Expression.Constant(Convert.ChangeType(r.TargetValue, tProp));
// use a binary operation, e.g. 'Equal' -> 'u.Age == 21'
return Exp...
How can I remove a flag in C?
... @Dennis I thought XOR would work to remove an already set flag. notification.sound ^= Notification.DEFAULT_SOUND;
– likejudo
Apr 14 '14 at 9:56
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Android onCreate or onStartCommand for starting service
...alled once per instantiated object.
You only need to implement onCreate() if you actually want/need to initialize something only once.
onStartCommand() is called every time a client starts the service using startService(Intent intent). This means that onStartCommand() can get called multiple times...
How do you check what version of SQL Server for a database using TSQL?
...on') AS nvarchar)
SET @ver = SUBSTRING(@ver, 1, CHARINDEX('.', @ver) - 1)
IF ( @ver = '7' )
SELECT 'SQL Server 7'
ELSE IF ( @ver = '8' )
SELECT 'SQL Server 2000'
ELSE IF ( @ver = '9' )
SELECT 'SQL Server 2005'
ELSE IF ( @ver = '10' )
SELECT 'SQL Server 2008/2008 R2'
ELSE IF ( @ver = '11...
How to cherry-pick multiple commits
...mit A to commit B (where A is older than B), run:
git cherry-pick A^..B
If you want to ignore A itself, run:
git cherry-pick A..B
(Credit goes to damian, J. B. Rainsberger and sschaef in the comments)
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Why is ArrayDeque better than LinkedList
... a cache miss on each element. On top of it they consume way more memory.
If you need add/remove of the both ends, ArrayDeque is significantly better than a linked list. Random access each element is also O(1) for a cyclic queue.
The only better operation of a linked list is removing the current ...
Event listener for when element becomes visible?
...
Javascript events deal with User Interaction, if your code is organised enough you should be able to call the initialising function in the same place where the visibility changes (i.e. you shouldn't change myElement.style.display on many places, instead, call a function/...
Java: Instanceof and Generics
...ook through my generic data structure for a value's index, I'd like to see if it is even an instance of the type this has been parametrized to.
...
How to use PHP OPCache?
...e next visit.
opcache_reset();
opcache_invalidate():
Invalidates a specific cached script. Meaning the script will be parsed again on the next visit.
opcache_invalidate('/path/to/script/to/invalidate.php', true);
Maintenance and reports
There are some GUI's created to help maintain OpCache a...