Add Scala as a pl with somewhat different prior art

rust-lang · Nov 10, 2024 · e06e70a · e06e70a
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commit e06e70a
Showing 1 changed file with 5 additions and 0 deletions.
diff --git a/text/3723-static-function-argument-unpacking.md b/text/3723-static-function-argument-unpacking.md
@@ -383,6 +383,7 @@ Table 1. Operator symbol alternatives.
 | Prefix | `*`      | Used in Python and Ruby for argument unpacking, in Kotlin for spreading. Clashes with dereferencing. |
 | Prefix | `**`     | Used in Python for unpacking dictionaries into named keyword parameters.                             |
 | Prefix | `{*}`    | Used in Tcl for argument expansion.                                                                  |
+| Suffix | `: _*`   | Used in Scala for sequence arguments.                                                                |
 | Prefix | `@`      | At. Emphasis on _where_ the arguments come from. Used in PowerShell for splatting.                   |
 | Prefix | `^`      | Connotation of "up and out". Used for `XOR` in binary contexts.                                      |
 | Prefix | `~`      | Connotation of "inverting the collection inside-out", or C++ destructors.                            |
@@ -542,8 +543,11 @@ Table 2. Non-exhaustive summary of argument unpacking in different programming l
 | PowerShell | Splatting          | `sum_four @nums`               | [Reference][powershell]                      |
 | Python     | Argument unpacking | `sum_four(*nums)`              | [Tutorial][py-tut], [reference][py-ref]      |
 | Ruby       | Splat operator     | `sum_four(*nums)`              | [Syntax documentation][ruby]                 |
+| Scala¹     | Sequence argument  | `sum(nums: _*)`                | [Language specification][scala-spec]         |
 | Tcl        | Argument expansion | `[sum_four {*}$nums]`          | [TIP 293][tip-293], [TIP 157][tip-157], [Wiki][tcl-wiki] |
 
+¹ In Scala, the *sequence argument* is only accepted into a variadic parameter slot, if such is defined as the last parameter of a parameter section.
+
 [crystal]: <https://crystal-lang.org/reference/1.14/syntax_and_semantics/splats_and_tuples.html#splatting-a-tuple> "Crystal Language Formal Specification: Splatting a Tuple"
 [js]: <https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Spread_syntax> "MDN JavaScript Reference: Spread Syntax (...)"
 [julia]: <https://docs.julialang.org/en/v1/manual/functions/#Varargs-Functions> "Julia Manual: Varargs Functions"
@@ -560,6 +564,7 @@ Table 2. Non-exhaustive summary of argument unpacking in different programming l
 [py-tut]: <https://docs.python.org/3.13/tutorial/controlflow.html#unpacking-argument-lists> "The Python Tutorial: Unpacking Argument Lists"
 [py-ref]: <https://docs.python.org/3.13/reference/expressions.html#calls> "The Python Language Reference: Expressions - Calls"
 [ruby]: <https://docs.ruby-lang.org/en/3.3/syntax/calling_methods_rdoc.html#label-Array+to+Arguments+Conversion> "Ruby Syntax Documentation: Calling Methods - Array to Argument Conversion"
+[scala-spec]: <https://scala-lang.org/files/archive/spec/3.4/04-basic-definitions.html#repeated-parameters> "Scala Language Specification - Repeated Parameters"
 [tip-293]: <https://core.tcl-lang.org/tips/doc/trunk/tip/293.md> "Tcl Improvement Proposal 293 - Argument Expansion with Leading {*}"
 [tip-157]: <https://core.tcl-lang.org/tips/doc/trunk/tip/157.md> "Tcl Improvement Proposal 157 - Argument Expansion with Leading {expand}"
 [tcl-wiki]: <https://wiki.tcl-lang.org/page/%7B%2A%7D> "Tcl Wiki - {*}"