How to efficiently concatenate multiple arrays in Ruby?

Question

I just wanted to concatenate multiple arrays in Ruby and couldn\'t find a satisfying way to do so.

Example input:

foo = [1, 2, 3]
ba         


        

Answer 1

If you've already determined that multiple concatenation is the fastest method, you can write it nicer using reduce:

[foo, bar, baz].reduce([], :concat)