What if we made the keyword "unwrap"? if unwrap someViewController { // now there is a shadowing nonoptional (unwrapped) variable of the same name only within this scope, boiling down to simple syntactic sugar for optional binding and it is fairly clear. }
On Sat, Dec 19, 2015, 1:31 PM Kevin Wooten via swift-evolution < swift-evolution@swift.org> wrote: > As much fun as it to example with foo, I would argue the opposite when you > use some real world variable names: > > if let someInterestingViewConroller = someInterestingViewConroller { > } > > vs > > If let someInterestingViewConroller { > } > > We know what let does and it should be enough to impart the necessary > information for this statement. > > When it comes to newcomers I think you'd be hard pressed to find somebody > who'd be able to understand either form without teaching; so not losing > much there. > > > On Dec 19, 2015, at 10:01 AM, Chris Lattner via swift-evolution < > swift-evolution@swift.org> wrote: > > > On Dec 11, 2015, at 8:19 AM, Jeff Kelley via swift-evolution < > swift-evolution@swift.org> wrote: > > I’ve had similar ideas to this. Instead of ditching the if let syntax > altogether, another approach would be to use the existing name if no new > name is given, so that this code: > > if let foo = foo { /* use foo */ } > > could become this code: > > if let foo { /* use foo */ } > > In both cases, foo is non-optional inside the braces. If you gave it > another name with the if let syntax, that would work as it does today. > > > Hi Jeff, > > This is commonly requested - the problem is that while it does help reduce > boilerplate, it runs counter to the goal of improving clarity. > > -Chris > > _______________________________________________ > swift-evolution mailing list > swift-evolution@swift.org > https://lists.swift.org/mailman/listinfo/swift-evolution > > _______________________________________________ > swift-evolution mailing list > swift-evolution@swift.org > https://lists.swift.org/mailman/listinfo/swift-evolution >
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