From: ruby-core@...
Date: 2015-12-06T05:18:03+00:00
Subject: [ruby-core:71853] [Ruby trunk - Bug #11776] [Open] dig and custom	objects

Issue #11776 has been reported by Marc-Andre Lafortune.

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

* 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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