564NSData to NSString and vice versa

From NSData to NSString:

NSString *s = [[NSString alloc] initWithData:d encoding:NSUTF8StringEncoding];

And the other way round:

NSData *d = [s dataUsingEncoding:NSUTF8StringEncoding]:
565Stripping Characters from an NSString
484Printing Selectors in NSLog
452Padding with Zeros (or other characters)
383String By Appending Path Component
381Zero-Padding in Objective-C
376Variable length of accuracy of float in NSString
347UIImage → pixelData → UIImage Rountrip