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
}
3899eaf2e2
Omit the results evaluated at assignment if they are too long.
The behavior of ECHO_ON_ASSIGNMENT being on by default is hard to understand,
so I change it to off by default. Instead, we turn OMIT_ON_ASSIGNMENT on by
default. The result is displayed on assignment, but it will always be short
and within one line of the screen.
c5ea79d5ce
e9e17cbc05 (enabling the warning by
default) caused a warning in test-spec:
```
/data/chkbuild/tmp/build/20190802T213005Z/ruby/spec/ruby/core/binding/irb_spec.rb
Binding#irb
- creates an IRB session with the binding in scope/data/chkbuild/tmp/build/20190802T213005Z/ruby/spec/ruby/core/binding/fixtures/irb.rb:3: warning: __FILE__ in eval may not return location in binding; use Binding#source_location instead
```
20190802T213005Z.log.html.gz
ref: [Bug #4352]
Reline is a readline stdlib compatible library. It also supports
multiline input. IRB is improved with Reline and supports multiline.
Besides, supports showing documents when completed.
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@67645 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
There was incorrect backticks (`) instead of plus signs to denote method
references, and a typo.
[Fix GH-2016]
From: Olivier Lacan <hi@olivierlacan.com>
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65729 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
For some reason this very useful method was undocumented since it was added in
493e488974 which makes finding it in the docs
impossible before this change.
I've added a detailed example with sample code because it's one of the most
powerful tools to debug Ruby code and I believe very few people are aware of it
due to the lack of documentation.
[Fix GH-2010]
From: Olivier Lacan <hi@olivierlacan.com>
git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@65674 b2dd03c8-39d4-4d8f-98ff-823fe69b080e
