Generate a random alphanumeric string in Cocoa
Here's a quick and dirty implementation. Hasn't been tested.
NSString *letters = @"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";-(NSString *) randomStringWithLength: (int) len { NSMutableString *randomString = [NSMutableString stringWithCapacity: len]; for (int i=0; i<len; i++) { [randomString appendFormat: @"%C", [letters characterAtIndex: arc4random_uniform([letters length])]]; } return randomString;}
Not exactly what you ask, but still useful:
[[NSProcessInfo processInfo] globallyUniqueString]Sample output:
450FEA63-2286-4B49-8ACC-9822C7D4356B-1376-00000239A4AC4FD5
NSString *alphabet = @"abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXZY0123456789";NSMutableString *s = [NSMutableString stringWithCapacity:20];for (NSUInteger i = 0U; i < 20; i++) { u_int32_t r = arc4random() % [alphabet length]; unichar c = [alphabet characterAtIndex:r]; [s appendFormat:@"%C", c];}