[swift-evolution] Proposal: Add implicit/default else-behaviour for the guard statement

[Gwendal Roué]

> Le 17 déc. 2015 à 11:58, Andrey Tarantsov via swift-evolution <swift-evolution at swift.org> a écrit :
> 
> 4) I would love a “guard!” variant that crashes instead of returning.

Isn’t it the role of assert and precondition?

Yet I have to admit that assert and precondition can not replace guards like the following, which define a variable:

	guard let x = optionalX else {
	    fatalError("Missing x")
	}
	// use x

Gwendal Roué