SIP-70 - Flexible Varargs

[lihaoyi]

No description provided.

[Ichoran]

Python should be Javascript

[som-snytt]

On the pattern side, the old gotcha is scala/bug#7623 (which has a lint on Scala 2). That is where two pat vars are satisfied by a single Seq, i.e., there is a kind of misalignment. (The example may temper ambition for patterns.)

[Atry]

Do you want to cite #41 ? There are a lot of previous discussions on this feature.

This SIP is a renamed version of #41 , and also adds an intermediate step to create a temporary seq.

• applyBegin -> newBuilder
• applyNext -> addOne
• applyNextSeq -> addAll
• applyEnd -> result

[prolativ]

I started to wander if this SIP could help resolve this issue: scala/scala3#18009
In short, the problem there is that an invocation of a curried method added by a refinement on a subtype of Selectable, e.g.

mySelectable.foo(args1*)(args2*)

should get desugared to something like

mySelectable.applyDynamic("foo")(args1*, args2*).asInstanceOf[Foo]

which is now illegal, but would be when this SIP gets implemented