Hello everyone. I understand that topic has already been discussed in the past, but I failed to get any information on its current state of affairs.
I guess the subject of this mail is explicit, but to make sure I’m clear, here's a small snippet that illustrates the problem: func f(args: Int…) { // Some implementation ... } // Now it's impossible to call f without explicitly naming its parameters. For many use-cases, this problem can be solved by overloading f so that it explicitly accepts an array. func f(_ args: [Int]) { // Some implementation ... } func f(_ args: Int…) { f(args) } Some people also advocate (myself generally included) that one should prefer the signature explicitly marking args as an array, as the syntactic overhead of wrapping the arguments with “[]” when calling f is arguably bearable. However, in some other situations, this approach might not be applicable. For instance, one may simply not be able to modify the original function. Another use-case may be a function that should forward its own variadic parameters. In a variety of other languages, there exists a way to do this. For instance, Python can “unpack” (or splat) a list into function arguments by prefixing it with *: def f(*args): # Some implementation … f(*[1, 2, 3]) # == f(1, 2, 3) I was wondering if such feature could be supported by Swift, and if not, why. Syntactically, I like the use of “…”, which would mirror function signatures: f(…[1, 2, 3]) // == f(1, 2, 3) Thanks. -- Dimitri Racordon
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