[ruby-core:104610] [Ruby master Bug#17737] `Array#permutation` does not immediately check the arity when no block is given
From:
matz@...
Date:
2021-07-15 06:19:20 UTC
List:
ruby-core #104610
Issue #17737 has been updated by matz (Yukihiro Matsumoto). Status changed from Open to Rejected I agree with @marcandre. We need no fix here. Matz. ---------------------------------------- Bug #17737: `Array#permutation` does not immediately check the arity when no block is given https://bugs.ruby-lang.org/issues/17737#change-92897 * Author: kachick (Kenichi Kamiya) * Status: Rejected * Priority: Normal * ruby -v: ruby 3.0.0p0 (2020-12-25 revision 95aff21468) [x86_64-darwin20] * Backport: 2.5: UNKNOWN, 2.6: UNKNOWN, 2.7: UNKNOWN, 3.0: UNKNOWN ---------------------------------------- ```ruby p [].permutation(1) #=> #<Enumerator: []:permutation(1)> p [].permutation(1, 3) #=> #<Enumerator: []:permutation(1, 3)> p [].permutation(1, 3).to_a #=> `permutation': wrong number of arguments (given 2, expected 0..1) (ArgumentError) ``` ```ruby p [].cycle(1) #=> #<Enumerator: []:cycle(1)> p [].cycle(1, 3) #=> `cycle': wrong number of arguments (given 2, expected 0..1) (ArgumentError) ``` Is this an intentional behavior? I would expect `To raise ArgumentError immediately if the arity is wrong` like Array#cycle. PR: https://github.com/ruby/ruby/pull/4267 -- https://bugs.ruby-lang.org/ Unsubscribe: <mailto:ruby-core-request@ruby-lang.org?subject=unsubscribe> <http://lists.ruby-lang.org/cgi-bin/mailman/options/ruby-core>