#import <Foundation/Foundation.h>

int main()
  autoreleasepool
    str := 'abcdefgh'
    n := 2
    m := 3
    Log( '%@', str[0 .. str.length-1] )                     // abcdefgh
    Log( '%@', str[n .. m]            )                     // cd
    Log( '%@', str[n .. str.length-1] )                     // cdefgh
    Log( '%@', str.substringFromIndex: n                  ) // cdefgh
    Log( '%@', str[(str.rangeOfString:'b').location .. m] ) // bcd
  return 0