大约有 47,000 项符合查询结果（耗时：0.0360秒） [XML]
Objective-C for Windows
... Objective-C++ with GNUStep a few years ago. However, GNUStep does compile from just about any platform. Cocotron is a very mac-centric project. Although it is probably possible to compile it on other platforms, it comes XCode project files, not makefiles, so you can only compile its frameworks out ...
Proper use of beginBackgroundTaskWithExpirationHandler
... if (completion) {
//run the completion block and remove it from the completion block dictionary
completion();
[self.dictTaskCompletionBlocks removeObjectForKey:[NSNumber numberWithUnsignedLong:_key]];
}
}
@synchronized(self.dictTaskIdentifie...
Difference between java.util.Random and java.security.SecureRandom
...gruential Generator to produce random values in java.util.Random.
Taken from java.util.Random source code (JDK 7u2), from a comment on the method protected int next(int bits), which is the one that generates the random values:
This is a linear congruential pseudorandom number generator, as
...
How to convert An NSInteger to an int?
... To be precise, I think NSInteger is an int on 32-bit platforms, and a long on 64-bit platforms.
– Frédéric Adda
Mar 11 '14 at 22:16
5
...
Check if an image is loaded (no errors) with jQuery
... return imgElement.complete && imgElement.naturalHeight !== 0;
}
From the spec for the complete attribute:
The IDL attribute complete must return true if any of the following
conditions is true:
The src attribute is omitted.
The final task that is queued by the networking t...
Android Studio: Android Manifest doesn't exists or has incorrect root tag
...ue for both Android Studio and Intelli J. Sometime when you import project from existing sources it prefer the manifest file inside the generates sources directory.
share
|
improve this answer
...
How to convert CFStringRef to NSString?
How can I get a new NSString from aCFString ?
8 Answers
8
...
How do I rename all files to lowercase?
...
If you're comfortable with the terminal:
Open Terminal.app, type cd and then drag and drop the Folder containing the files to be renamed into the window.
To confirm you're in the correct directory, type ls and hit enter.
Paste this code and hit enter:
for f in *; do mv "$f" "$f.tmp"; mv "$f....
Add up a column of numbers at the Unix shell
...
... | paste -sd+ - | bc
is the shortest one I've found (from the UNIX Command Line blog).
Edit: added the - argument for portability, thanks @Dogbert and @Owen.
share
|
improve t...
Good tool to visualise database schema? [closed]
...
I just got what I needed from sqlfairy. Simple and quick.
– fivedogit
May 21 '15 at 20:37
...