test_exception_vs_if_perf.rb

require 'benchmark'

def test_exception
  raise "test exception" unless true
  2 + 2
rescue
  4
end

def test_unless
  unless true
    2 + 2
  else
    4
  end
end

def test_if
  if true
    4
  else
    2 + 2
  end
end

Benchmark.bm do |x|
  x.report("exception") { 10_000_000.times { test_exception } }
  x.report("unless") { 10_000_000.times { test_unless } }
  x.report("if") { 10_000_000.times { test_if }}
end

Thx for this compare :)
maybe a small visual improvements like:

  x.report("exception\t") ...
  x.report("unless\t\t") ...
  x.report("if\t\t") ...