gistfile1.m

/// Syntactically correct usage: @"Hello ".append(@"World").append(@"!");

@interface NSString (horrible)

-(NSString* (^)(NSString* appendedText))append;

@end

@implementation NSString (horrible)

-(NSString *(^)(NSString *))append
{
    return  ^NSString*(NSString* toAppend)
    {
        return [self stringByAppendingString:toAppend];
    };
}

@end