Project

General

Profile

Actions
Copy link

Feature #21813

closed

Add [:forward, :...] symbol tuple to indicate forwarding arguments when calling `Method#parameters`

Feature #21813: Add [:forward, :...] symbol tuple to indicate forwarding arguments when calling `Method#parameters`
1

Added by pabloh (Pablo Herrero) about 2 months ago. Updated 12 days ago.

Status:
Rejected
Assignee:
-
Target version:
-
[ruby-core:124385]

Description

When accessing Method#parameters for a method using forwarding parameters, an unexpected behavior arises:

def foo(*, **, &)
  args = method(__method__).parameters.map(&:last).join(',')

  binding.eval "print(#{args})" # Works fine
end

foo(1,2,3,4, a: 23) # => 1234{a: 23}

def bar(...)
  args = method(__method__).parameters.map(&:last).join(',') 

  binding.eval "print(#{args})" # Fails!
end

bar(1,2,3,3, a: 23) # SyntaxError

It's very strange that you can't access the parameters, on eval, using the symbols provided at Method#parameters.

Adding [:forward, :...] or [:forwarding, :...] for those cases feels simply natural.

Actions
Copy link

Also available in: PDF Atom