oc 笔记

整形字符串相互转化:

Convert Integer to NSString:

int Value = 112;
NSString *ValueString = [NSString stringWithFormat:@"%d", Value];

Convert NSString to C Integer:

int Value = 112;
int ValueString = [Value intValue];
char *ValueasCString = (char *)[ValueString UTF8String];

正则匹配:

search 模式:

+ (NSString *)getDomainOfEmailAddress:(NSString *)email
{
    NSString *re = @"(?<=@)((?:[A-Za-z0-9]+(?:[\-|\.][A-Za-z0-9]+)*)+\.[A-Za-z]{2,6})$";
    NSRange range = [email rangeOfString:re options:NSRegularExpressionSearch];
    if (range.location != NSNotFound) {
        return [email substringWithRange:range];
    }
    else {
        return nil;
    }
}

match 模式:

+ (BOOL)isEmailAddress:(NSString *)email
{
    NSString *re = @"^([A-Za-z0-9\.\-_]{1,})@((?:[A-Za-z0-9]+(?:[\-|\.][A-Za-z0-9]+)*)+\.[A-Za-z]{2,6})$";
    NSPredicate *emailTest = [NSPredicate predicateWithFormat:@"SELF MATCHES %@", re];

    return [emailTest evaluateWithObject:email];
}

另外一篇待看的文章:

http://blog.devwu.com/develop/2014-05-29/use-regex-in-objective-c/

字符串输入:

char temp [100] = {0};
scanf("%s",temp);
NSString *str = [NSString stringWithUTF8String:temp];

字符串处理的另外两篇博客:

字符串拼接 : http://xys289187120.blog.51cto.com/3361352/676665

字符串拆分 : http://blog.sina.com.cn/s/blog_73eed198010101jz.html