gistfile1.rb

#/usr/bin/env ruby

require 'benchmark'

def to_array_flatten(element)
  [element].flatten
end

def to_array_splat(element)
  [*element]
end

single_element = 'a'
large_array = (0..100).map {rand}
total_count = 100_000

Benchmark.bmbm do |b|
  b.report("Single element flatten") {total_count.times {to_array_flatten(single_element)}}
  b.report("Single element splat")   {total_count.times {to_array_splat(single_element)}}
  b.report("Multiple element flatten") {total_count.times {to_array_flatten(large_array)}}
  b.report("Multiple element splat")   {total_count.times {to_array_splat(large_array)}}
end