我做了发件人类和发送对象:如何检查函数的参数是否为零?
Sender *sender = [[Sender alloc] init];
于是,我写了测试:
// should success
[sender upload:[UIImage imageNamed:@"test2.jpg"] withName:@"test2.jpg"];
// should fail
[sender upload:nil withName:@"test2.jpg"];
于是,我写了无校验码:
- (void)upload:(UIImage *)image withName:(NSString *)name
{
if ([image isEqual:nil]) {
...
}
...
}
但无检查被忽略。 如何检查图像参数是否为零? 谢谢你的好意。