Feature #17116: raise ArgumentError in Enumerator#new in no given blocks

• Status: Closed
• Assignee: -
• Target version: -

[S_H_ (Shun Hiraoka)]

Currently, Enumerator#new allows this code (no block given):

obj = Object.new
Enumerator.new(obj)

with a warning (since ruby-2.0.0-preview2):

-e:1: warning: Enumerator.new without a block is deprecated; use Object#to_enum instead

I think it's okay to remove this behaviour.
And I think that it seems natural to raise ArgumentError if no block is given.

pull request:
https://github.com/ruby/ruby/pull/3408

[S_H_ (Shun Hiraoka)]

• Description updated (diff)

[sawa (Tsuyoshi Sawada)]

• Description updated (diff)

[shyouhei (Shyouhei Urabe)]

• Status changed from Open to Closed

Applied in changeset git|fa356a798aefc20725467d4fad02df8325d63e71.

---

Enumerator.new: raise unless block given

Has been deprecated since c73b6bd7ebd01133538c645566944132dbde4d13.
[Feature #17116] [ruby-dev:50945]