在开发中使用正则表达式时报了这样的问题：Call can throw, but it is not marked with ‘try‘ and the error is not handled，即：
let regex:NSRegularExpression = NSRegularExpression(pattern: "^1[3|4|5|7|8][0-9]{9}$", options: .caseInsensitive)
先看下在OC中的使用
NSError *error = NULL;
NSRegularExpression *regex = [NSRegularExpression regularExpressionWithPattern:@"^1[3|4|5|7|8][0-9]{9}$" options:NSRegularExpressionCaseInsensitive error:&error];
NSTextCheckingResult *result = [regex firstMatchInString:self options:0 range:NSMakeRange(0, [self length])];
if (result) {
return YES;
}
return NO;
对比一下发现原因是没有添加错误处理，可以通过添加try解决。
最终解决后代码：
do{
let regex:NSRegularExpression = try NSRegularExpression(pattern: "^1[3|4|5|7|8][0-9]{9}$", options: .caseInsensitive)
let result:NSTextCheckingResult = regex.firstMatch(in: self, options:.reportProgress, range: NSMakeRange(0, self.count))!
if result != nil {
return true
}
}catch { }
return false
swift 报错 Call can throw, but it is not marked with 'try' and the error is not handled
原文：https://www.cnblogs.com/cui-cui/p/10109855.html