As Jacob has just touched on, this suggestion (in various forms) has been proposed before and is proposed often. However, syntactic sugar is out of scope for this phase of Swift 4 evolution.
On Sun, Aug 28, 2016 at 2:54 PM, Nicholas Exner via swift-evolution < [email protected]> wrote: > Dear Swift Evolution Group Members, > Recently, as I was reviewing some code that I wrote, I was > wondering what the community’s thoughts are on the possible value of having > a special “if let” self-assignment operator added to the language (such as > =? ). A sort of syntactic sugar that allows for optional unwrapping into a > scoped variable of the same name as the variable in the larger scope. Here > is some before and after code of what I am contemplating: > > *Current:* > var str:String? > str = "Hello" > > if let str = str { > print(str) > } > > *Abbreviated:* > var str:String? > str = “Hello” // Output is Hello, not Optional(“Hello”) > > if let str =? { > print(str) // Output is also Hello, not Optional(“Hello”) > } > > The value that I perceive of adding this to the language would be to allow > a short-hand way to unwrap in a “if let" conditional and allowing > developers to reduce duplication when a unique variable name is not > needed. By the way, I’m a big fan of ternary operators which the community > already sees of value. > > Let me know your thoughts. Is this something that could be put into a > proposal? > > Cheers, > —Nick— > . > > > > _______________________________________________ > swift-evolution mailing list > [email protected] > https://lists.swift.org/mailman/listinfo/swift-evolution > >
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