Feature #14778: Make Object#dup accept a block

• Status: Feedback
• Assignee: -
• Target version: -

[hkdnet (Ko Sato)]

I'd like to use Object#dup with a block, which is equivalent to dup.tap.

An example for dup.tap is here.

require 'uri'

module MyUri
  class << self
    def foo_uri
      base_uri.dup.tap { |e| e.path = '/foo' }
    end

    private

    def base_uri
      @base_uri ||= URI.parse('http://example.com')
    end
  end
end

With this patch, we can write base_uri.dup { |e| e.path = '/foo' } and it's simpler.

[shyouhei (Shyouhei Urabe)]

• Status changed from Open to Feedback

Not an immediate NG, but curious why we should do this in core, instead of your gem?

Would you mind telling us the reason this should be enabled for all the ruby users around the world?

[nobu (Nobuyoshi Nakada)]

• Related to Feature #12092: Allow Object#clone to yield cloned object before freezing added