NSNumberの比較、NSStringの比較

こんにちは。アキオ（@akio0911）です。

NSNumberの比較と、NSStringの比較の方法を紹介します。

#import ＜Foundation/Foundation.h＞

void testForNumber(){
    NSLog(@”%s”, __func__);
    NSNumber* number11 = [NSNumber numberWithInt:11];
    NSNumber* number22 = [NSNumber numberWithInt:22];
    
    switch([number11 compare:number22]){
        case NSOrderedAscending:
            NSLog(@”NSOrderedAscending”);
            break;
        case NSOrderedSame:
            NSLog(@”NSOrderedSame”);
            break;
        case NSOrderedDescending:
            NSLog(@”NSOrderedDescending”);
            break;
    }
}

void testForString(){
    NSLog(@”%s”, __func__);
    NSString* string1 = [NSString stringWithString:@”APPLE”];
    NSString* string2 = [NSString stringWithString:@”ORANGE”];
    
    switch([string1 compare:string2]){
        case NSOrderedAscending:
            NSLog(@”NSOrderedAscending”);
            break;
        case NSOrderedSame:
            NSLog(@”NSOrderedSame”);
            break;
        case NSOrderedDescending:
            NSLog(@”NSOrderedDescending”);
            break;
    }
}

int main() {
    NSAutoreleasePool* pool = [[NSAutoreleasePool alloc] init];
    
    testForNumber();
    testForString();
    
    [pool release];
    
    return 0;
}