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How to increment a NSNumber
... and store it in a new NSNumber.
For instance, for an NSNumber holding an integer:
NSNumber *number = [NSNumber numberWithInt:...];
int value = [number intValue];
number = [NSNumber numberWithInt:value + 1];
Or for an NSNumber holding a floating-point number:
NSNumber *number = [NSNumber number...
Pandas count(distinct) equivalent
...
Interestingly enough, very often len(unique()) is a few times (3x-15x) faster than nunique().
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How to show the loading indicator in the top status bar
...till active):
The header file:
#import <Foundation/Foundation.h>
@interface RMActivityIndicator : NSObject
-(void)increaseActivity;
-(void)decreaseActivity;
-(void)noActivity;
+(RMActivityIndicator *)sharedManager;
@end
and implementation:
#import "RMActivityIndicator.h"
@interface R...
Test if object implements interface
What is the simplest way of testing if an object implements a given interface in C#? (Answer to this question
in Java )
1...
Verifying that a string contains only letters in C#
...:
Regex.IsMatch(theString, @"^[\w]+$");
Note, these patterns also match international characters (as opposed to using the a-z construct).
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How to clear a notification in Android
...ag to your Notification object. You can also clear it manually with cancel(int), passing it the notification ID, or clear all your Notifications with cancelAll().
But Donal is right, you can only clear notifications that you created.
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What's the difference between UTF-8 and UTF-8 without BOM?
...ommended for UTF-8, but may be encountered in contexts where UTF-8 data is converted from other encoding forms that use a BOM or where the BOM is used as a UTF-8 signature. See the “Byte Order Mark” subsection in Section 16.8, Specials, for more information.
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Get the (last part of) current directory name in C#
...ste Path.GetFileName("/Users/smcho/filegen_from_directory/AIRPassthrough") into LINQPad if you don't believe me.
– SLaks
May 16 '11 at 13:46
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How to check if current thread is not main thread
... solutions, I think that's the best one:
boolean isUiThread = VERSION.SDK_INT >= VERSION_CODES.M
? Looper.getMainLooper().isCurrentThread()
: Thread.currentThread() == Looper.getMainLooper().getThread();
And, if you wish to run something on the UI thread, you can use this:
new Handle...
Java - removing first character of a string
...k appears to be no longer valid. Try the following link instead: substring(int)
– Christian Hoffmann
Aug 21 '18 at 15:15
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