bench.rb

require "./late"
require "erb"
require "bench"

def purecode(context = {})
  myfield = context[:myfield]
  out = "The sum is "
  out.concat (2+2).to_s
  out.concat " Also substitute "
  out.concat (myfield).to_s
  out.concat " ok"
  out
end

erb = ERB.new("The sum is <%=2+2%> Also substitute <%=myfield%> ok")
myfield = 10
benchmark "rehearsal" do
  late("The sum is <%=2+2%> Also substitute <%#myfield%> ok", {:myfield => 10})
  purecode({:myfield => 10})
  erb.result
end

benchmark "late" do
  late("The sum is <%=2+2%> Also substitute <%#myfield%> ok", {:myfield => 10})
end

benchmark "purecode" do
  purecode({:myfield => 10})
end

benchmark "erb" do
  erb.result
end

run 10000