Ruby Quicktips

Convert Object to Array

Have you ever been in a situation where you needed a method that does all of the following?

• Convert nil to an empty Array, and
• convert a non-Array variable n to [n], and
• leave the Array variable as is.

The way to achieve this, is using the little known method Array():

Array(nil) # => []
Array([]) # => []
Array(1) # => [1]
Array([2]) # => [2]

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