Bug #11776: dig and custom objects

• Status: Closed
• Assignee: matz (Yukihiro Matsumoto)
• Target version: -
• ruby -v: 2.3.0 preview
• Backport: 2.0.0: UNKNOWN, 2.1: UNKNOWN, 2.2: UNKNOWN

[marcandre (Marc-Andre Lafortune)]

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

[Eregon (Benoit Daloze)]

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

[matz (Yukihiro Matsumoto)]

Confirmed. ;-)

Matz.

[marcandre (Marc-Andre Lafortune)]

• Status changed from Open to Closed