On 2/20/16 5:04 AM, Daniel N wrote:
On Friday, 19 February 2016 at 21:30:37 UTC, Yuxuan Shui wrote:
I think the same applies to Swift. But I think you're supposed to use
it like this:
if let a = var {
// a is no unwrapped
}
But you would need to give the unwrapped value a new name.
Swift also has guard, which solves this issue.
func ex(a: Int?) {
// unwrap (possible to add additional check if desired)
guard let a = a where a > 0 else {
return // fail
}
a.ok // a is now a plain validated Int
}
I'm glad you pointed this out, I did not know this. Having to rename
variables all the time is quite annoying.
-Steve
