正在搜索NSString可可？

Question

我有一串字母，我想搜索一個特定的字母。

NSString *word = @"word"; 

我如何知道字符串是否包含字母「w」？

感謝

Answer 1

你可以使用rangeOfString做到這一點：

NSString *word = @"word"; 
if ([word rangeOfString:@"w"].location == NSNotFound) 
    NSLog(@"word does not contain w"); 
else 
    NSLog(@"word contains w"); 

Answer 2

return [word rangeOfString:@"w"].location != NSNotFound; 

Answer 3

return ([word rangeOfString:@"w"].location != NSNotFound);