[swift-users] Cleaner way than if let initialization?

[Tim Vermeulen via swift-users]

You want `flatMap`:

let dobString = dob.flatMap(serverDateFormatter.stringFromDate)

Or if you want `dobString` to be non-optional:

let dobString = dob.flatMap(serverDateFormatter.stringFromDate) ?? “"

> Currently I do stuff like this:
> 
> letdobString:String
> ifletdob = dob {
> dobString =serverDateFormatter.stringFromDate(dob)
> }
> else{
> dobString =""
> }
> 
> Is there a better, more idiomatic, way to do this sort of thing?
> 
> 
> 
> 
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