根據字符 刪除 可變數組、字符串 中的信息

    // 從父字符串中刪除子字符串
    NSMutableString *sourceString = [NSMutableString stringWithString:@"abcdefghijklmn"];
    NSString *delStrFromStr = @"adef";
    NSLog(@"sourceString %@", sourceString);
    
    if ([sourceString rangeOfString:delStrFromStr].length > 0) {
        [sourceString deleteCharactersInRange:[sourceString rangeOfString:delStrFromStr]];
    }
    NSLog(@"sourceString %@", sourceString);
    
    // 從父數組中刪除某個對象
    NSMutableArray *sourceArray = [NSMutableArray arrayWithObjects:@"abc", @"def", @"ghi", @"jklmn", nil];
    NSString *delStrFromArr = @"def";
    NSLog(@"sourceArray %@", sourceArray);
    if ([sourceArray containsObject:delStrFromArr]) {
        [sourceArray removeObjectAtIndex:[sourceArray indexOfObject:delStrFromArr]];
    }
    NSLog(@"sourceArray %@", sourceArray);

內容不只是字符串，自己可以延伸