NSString indexOf in Objective-C

Question

Is there anything similar to an indexOf function in the NSString objects?

Answer 1

I wrote a category to extend original NSString object. Maybe you guys can reference it. (You also can see the article in my blog too.)

ExtendNSString.h:

#import 

@interface NSString (util)

- (int) indexOf:(NSString *)text;

@end

ExtendNSStriing.m:

#import "ExtendNSString.h"

@implementation NSString (util)

- (int) indexOf:(NSString *)text {
    NSRange range = [self rangeOfString:text];
    if ( range.length > 0 ) {
        return range.location;
    } else {
        return -1;
    }
}

@end