ruby.git/lib/irb/cmd/measure.rb, branch v3_2_11

[ruby/irb] Add "show_cmds" command to list all commands'

2022-12-08T19:10:23+00:00

descriptions
(https://github.com/ruby/irb/pull/463)

https://github.com/ruby/irb/commit/7e857655ac

[ruby/irb] Move `:stopdoc:` directive

2022-03-14T05:40:28+00:00

If this is at the top level, it stops the documentation of the
entire module, but not only the part in this file.

https://github.com/ruby/irb/commit/86c41b06ad

[ruby/irb] Add an explanation of default sub commands of "measure", which are :time and :stackprof

2021-07-13T12:21:29+00:00

https://github.com/ruby/irb/commit/759be5a344

[ruby/irb] Allow "measure" command to take block

2021-02-06T11:45:08+00:00

https://github.com/ruby/irb/commit/20f1ca23e9

[ruby/irb] Try not to register the exact same measuring method twice

2020-12-24T14:26:22+00:00

https://github.com/ruby/irb/commit/cc66b5573e

[ruby/irb] Suppress "shadowing outer" warning

2020-12-22T14:45:43+00:00

https://github.com/ruby/irb/commit/27b149c599

[ruby/irb] Support arg for measure command

2020-12-22T14:45:43+00:00

https://github.com/ruby/irb/commit/b43f35d8f3

[ruby/irb] Add measure command

2020-12-20T07:23:59+00:00

You can use "measure" command to check performance in IRB like below:

  irb(main):001:0> 3
  => 3
  irb(main):002:0> measure
  TIME is added.
  => nil
  irb(main):003:0> 3
  processing time: 0.000058s
  => 3
  irb(main):004:0> measure :off
  => nil
  irb(main):005:0> 3
  => 3

You can set "measure :on" by "IRB.conf[:MEASURE] = true" in .irbrc, and, also,
set custom performance check method:

  IRB.conf[:MEASURE_PROC][:CUSTOM] = proc { |context, code, line_no, &block|
    time = Time.now
    result = block.()
    now = Time.now
    puts 'custom processing time: %fs' % (Time.now - time) if IRB.conf[:MEASURE]
    result
  }

https://github.com/ruby/irb/commit/3899eaf2e2