Pontus Niltoft niltoft
jenshandersson
/ JAConcat.m
Created
January 5, 2014 20:24
String concatenation in Objective-C, using one line of code. Takes a list of NSObject and concatenates their description.
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| #define $(...) ((NSString *)[[NSArray arrayWithObjects:__VA_ARGS__, nil] componentsJoinedByString:@""]) | |
| /* | |
| * Example | |
| */ | |
| NSString *string = $(@"Hello", @" ", @"World!", @"\n", @"1 + 2 = ", @(1+2)); |
jenshandersson
/ gist:5721994
Last active
December 18, 2015 03:58
A simple way to profile execution time of a code snippet.
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| static CFAbsoluteTime JAProfilingBlock (void (^block)(void)) { | |
| CFAbsoluteTime start = CFAbsoluteTimeGetCurrent(); | |
| block (); | |
| CFAbsoluteTime end = CFAbsoluteTimeGetCurrent(); | |
| return end - start; | |
| } | |
| #example usage |