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ruby--ruby/doc/syntax
Jeremy Evans f53dfab95c Add support for anonymous rest and keyword rest argument forwarding
This allows for the following syntax:

```ruby
def foo(*)
  bar(*)
end
def baz(**)
  quux(**)
end
```

This is a natural addition after the introduction of anonymous
block forwarding.  Anonymous rest and keyword rest arguments were
already supported in method parameters, this just allows them to
be used as arguments to other methods.  The same advantages of
anonymous block forwarding apply to rest and keyword rest argument
forwarding.

This has some minor changes to #parameters output.  Now, instead
of `[:rest], [:keyrest]`, you get `[:rest, :*], [:keyrest, :**]`.
These were already used for `...` forwarding, so I think it makes
it more consistent to include them in other cases.  If we want to
use `[:rest], [:keyrest]` in both cases, that is also possible.

I don't think the previous behavior of `[:rest], [:keyrest]` in
the non-... case and `[:rest, :*], [:keyrest, :**]` in the ...
case makes sense, but if we did want that behavior, we'll have to
make more substantial changes, such as using a different ID in the
... forwarding case.

Implements [Feature #18351]
2021-12-30 14:37:42 -08:00
..
assignment.rdoc
calling_methods.rdoc [DOC] Add documentation for hash value omission syntax 2021-12-20 01:09:52 +09:00
comments.rdoc
control_expressions.rdoc
exceptions.rdoc
literals.rdoc [DOC] Add documentation for hash value omission syntax 2021-12-20 01:09:52 +09:00
methods.rdoc Add support for anonymous rest and keyword rest argument forwarding 2021-12-30 14:37:42 -08:00
miscellaneous.rdoc
modules_and_classes.rdoc
pattern_matching.rdoc
precedence.rdoc
refinements.rdoc