File: bench_instance_eval.rb

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jruby 1.5.1-1%2Bdeb6u1
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require 'benchmark'

Benchmark.bmbm do |bm|
  bm.report("Control") { 10_000_000.times { 1 + 1 } }
  bm.report("instance_eval a block") { 10_000_000.times { instance_eval { 1 + 1 } } }
  if defined? instance_exec
    bm.report("instance_exec a block") { 10_000_000.times { instance_exec { 1 + 1 } } }
  end
  bm.report("instance_eval a string (* 0.1 times)") { 1_000_000.times { instance_eval " 1 + 1 " } }
end