array_sample.md

Array Sample (enumerables)

To get a random element from an Array, you can use the method sample, as follows:

[1, 2, 3][rand(3)]

[1, 2, 3].shuffle.first

[1, 2, 3].sample

sample is 15x faster than .shuffle.first

Reference: http://work.stevegrossi.com/2014/10/25/writing-fast-and-idiomatic-ruby/