Benchmarking string concat from array of hashes

string_concat_benchmark.rb

require 'benchmark/ips'

Benchmark.ips do |b|
  b.config(time: 39, warmup: 2)

  count = 100
  ary = Array.new(count, { text: 'text' })

  b.report("map") do
    ary.map { |hash| hash[:text] }.join
  end

  b.report("inject") do
    ary.inject(String.new) { |memo, hash| memo << hash[:text] }
  end
end