Posted over 3 years ago. Visible to the public.

Ruby: How to make an object that works with multiple assignment

Ruby allows multiple assignment:

a, b, c = o

In order to prove multiple values from a single object, Ruby calls #to_a on the object:

o ='O') def o.to_a [1,2,3] end a, b, c = o # Implicit call to #to_a here a # => 1 b # => 2 c # => 3

Hence, if you want your class to support multiple assignment, make sure to define a #to_a method.

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Owner of this card:

Dominik Schöler
Last edit:
over 1 year ago
by Henning Koch
array, destructuring
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Posted by Dominik Schöler to makandra dev
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