Objective-C正则表达式

Question

我需要在Objective C中使用正则表达式接受male或者female只接受..应该是case-Insensitive接受更低和更高的手段.我经历了苹果文档.. 并在代码下面实现但不工作...

- > 男性或女性只能被接受

-(BOOL)genderValidate:(NSString *)string{

NSError *error=nil;

NSRegularExpression *regex =[NSRegularExpression regularExpressionWithPattern:@"\\b (m|f)(a|e)(l|m)(e|a)(l)(e) \\b" options:(NSRegularExpressionCaseInsensitive) error: &error];
NSUInteger numberofmatches =[regex numberOfMatchesInString:string options:0 range:NSMakeRange(0,[string length])];

return numberofmatches;


}

Answer 1

为什么要使用正则表达式？把事情简单化:

- (BOOL)genderValidate:(NSString *)string {
    string = [string lowercaseString];

    return [string isEqualToString:@"male"] || [string isEqualToString:@"female"];
}