stopwatch.rb

A nice stop watch to measure time spans.

Usage:

Simple case:

sw = Stopwatch.new
sw.start("testing")

sleep(1)
sw.stop

=> testing: 1.829139s

Custom result handler:

sw = Stopwatch.new { | time, label | puts "parsing #{ label } took #{ time }s" }
sw.start("xml")

sw.running?
=> true

sw.stop
=> parsing xml took 2.68600010871887s

Multiple measurements and factory instantiation:

sw = Stopwatch.create_started("GET") do | time, label |
  # Report to tracking service...
  puts "finished #{ label } in #{ time }"
end

sw.restart("POST")
=> finished GET in 3.21600008010864

sw.stop
=> finished POST in 2.43900012969971

sw.duration
=> 2.43900012969971