From: eregontp@...
Date: 2015-12-06T11:53:12+00:00
Subject: [ruby-core:71856] [Ruby trunk - Bug #11776] dig and custom objects

Issue #11776 has been updated by Benoit Daloze.


There is already a spec for this behavior though :)
https://github.com/ruby/rubyspec/blob/master/core/hash/dig_spec.rb

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Bug #11776: dig and custom objects
https://bugs.ruby-lang.org/issues/11776#change-55259

* Author: Marc-Andre Lafortune
* Status: Open
* Priority: Normal
* Assignee: Yukihiro Matsumoto
* ruby -v: 2.3.0 preview
* Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN
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Although currently undocumented and untested, it is possible to `dig` objects of any class that implements `dig`:

    class Foo
      def dig(x, *)
        40 + x
      end
    end

    {hello: Foo.new}.dig(:hello, 2) # => 42

This seems actually quite nice to me.

Matz, could you confirm that this is part of the new feature? I'll fix the documentation and add some basic tests




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