From: usa@...
Date: 2016-04-02T08:27:22+00:00
Subject: [ruby-core:74782] [Ruby trunk Feature#12240] circle number arguments

Issue #12240 has been updated by Usaku NAKAMURA.

Assignee set to joke

----------------------------------------
Feature #12240: circle number arguments
https://bugs.ruby-lang.org/issues/12240#change-57908

* Author: Nobuyoshi Nakada
* Status: Open
* Priority: Normal
* Assignee: joke
----------------------------------------
Often improvements about implicit block argument have been proposed, but in vain.

Such as:

~~~ruby
[[1, 2], [3, 4]].map {|a1, a2| a1+a2} #=> [3, 7]
~~~
to

~~~ruby
[[1, 2], [3, 4]].map {_1+_2}
~~~

Now, we (ko1 and nobu) found and propose the *perfect* solution.

~~~ruby
[[1, 2], [3, 4]].map {���+���}
~~~

`���`..`���` denote the arguments upto 20.

https://github.com/ruby/ruby/compare/trunk...nobu:feature/number-arg



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