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Proper practice for subclassing UIView?
...this answer you may think of calling initWithFrame: from initWithCoder: in order to setup the frame.
Finally, if you load your UIView from a nib (or a storyboard), you also have the awakeFromNib opportunity to perform custom frame and layout initializations, since when awakeFromNib is called it's g...
When do we have to use copy constructors?
...ly, this is cached/memoized data accumulated over the object's lifetime in order to speed-up certain slow query operations performed by the object. It is safe to skip copying that data since it will be recalculated when (and if!) the relevant operations are performed. Copying this data may be unjust...
Xcode Project vs. Xcode Workspace - Differences
...ition of building a project, so every project needs at least one target in order to be more than just a collection of files and settings.
Select one of the project’s targets to run
In a lot of cases, projects are all you need. If you have a dependency that you build from source, you can embed ...
Difference between shared objects (.so), static libraries (.a), and DLL's (.so)?
...ile is incorrect. The header file defines prototypes which are required in order to compile the code which uses the library, but at link time the linker looks inside the library itself to make sure the functions it needs are actually there. The linker has to find the function bodies somewhere at lin...
Check to see if a string is serialized?
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Swapping the order of these tests would be more efficient.
– artfulrobot
Mar 21 '19 at 9:31
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What should every developer know about databases? [closed]
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Good question. The following are some thoughts in no particular order:
Normalization, to at least the second normal form, is essential.
Referential integrity is also essential, with proper cascading delete and update considerations.
Good and proper use of check constraints. Let the dat...
Load a WPF BitmapImage from a System.Drawing.Bitmap
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Using ImageFormat.Bmp is an order of magnitude faster.
– RandomEngy
Mar 7 '10 at 20:35
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git cherry-pick says “…38c74d is a merge but no -m option was given”
...entropic 1 is the "first parent", 2 is the "second parent", and so on. The order is the one in which they're listed in the commit (as viewed by git show and the like).
– Borealid
Mar 21 '12 at 15:20
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What APIs are used to draw over other apps (like Facebook's Chat Heads)?
...head.Because in the above code output the circle have some space from the border.In Facebook the bubble doesn't have that space
– Debugger
Feb 10 '15 at 12:30
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What is Autoloading; How do you use spl_autoload, __autoload and spl_autoload_register?
...spl_autoload_register() with anonymous function rule just after 1st one in order o manually include missing parent / inherited classes.
– stamster
Jul 27 '17 at 21:54
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