A simple self-compiling objective-c file

selfcompile.m

/* 2>/dev/null
COMPILED=${0%.*}
[[ -e "$COMPILED" ]] || clang $0 -o "$COMPILED" -framework Foundation
exec "$COMPILED" $@
*/
 
 
#import <Foundation/Foundation.h>
  
int main(int argc, char *argv[])
{
    @autoreleasepool
  {
		NSLog(@"Hello %@",NSProcessInfo.processInfo.environment[@"USER"]);
    }
    return 0;
}