Evgeniy Dolzhenko's blog on software related matters - Latest Comments

Re: Travel To The Core Rails 3 Methods Without Leaving IRB Prompt

Get Medical Records — Sun, 24 Jun 2012 11:15:10 -0000

Beneficial hook really, I of which at all times, We'll replace this value snippet as a result.

Re: Travel To The Core Rails 3 Methods Without Leaving IRB Prompt

electric hotel — Sun, 23 Oct 2011 21:33:02 -0000

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Re: Rails Pro Tip: Invoke Command Line Commands From Rails Console

ErrorApp — Mon, 31 Jan 2011 06:13:19 -0000

Nice..!!!

Re: Travel To The Core Rails 3 Methods Without Leaving IRB Prompt

Evgeniy Dolzhenko — Sat, 29 May 2010 01:40:49 -0000

Good catch indeed, I do that all the time, I'll update the code snippet accordingly

Re: Travel To The Core Rails 3 Methods Without Leaving IRB Prompt

Evgeniy Dolzhenko — Sat, 29 May 2010 01:39:20 -0000

Haha, sadly - yes. One thing it relies on is Method#source_location method, another is Ripper parser and these are not available in 1.8

Re: Travel To The Core Rails 3 Methods Without Leaving IRB Prompt

Ryan Sobol — Fri, 28 May 2010 19:33:32 -0000

I love it -- Russian ingenuity at it's finest! I haven't looked at the code, but tell me, does this library depend on Ruby 1.9.2 exclusively?

Re: Travel To The Core Rails 3 Methods Without Leaving IRB Prompt

Mark Carey — Fri, 28 May 2010 12:03:23 -0000

should gave been rvm gemset create rails3

Re: Travel To The Core Rails 3 Methods Without Leaving IRB Prompt

Mark Carey — Fri, 28 May 2010 12:01:13 -0000

One thing to add is the recommendation to create a rails3 gemset so as to not pollute your global gem space until rals3 is released:
rvm 1.9.2-head
rvm create rails3
rvm 1.9.2-head@rails3
gem install rails --pre

See here for more details about gemsets
http://rvm.beginrescueend.c...

Re: Exploring Latest ruby-lib Additions

Evgeniy Dolzhenko — Thu, 01 Apr 2010 06:16:47 -0000

@Manuel, Enumerable#group_by examines the whole collection grouping elements from anywhere in the collection based on the value computed by the block (and returning Hash), while Enumerable#chunk groups/"chunks" only the consecutive elements returning Array of Arrays (structure which can be searched with Array#assoc).

Probably better illustrated with example:

> [1,2,1].chunk { |i| i }.to_a
 => [[1, [1]], [2, [2]], [1, [1]]] # 3 "chunks" are returned

> [1,2,1].group_by { |i| i }
 => {1=>[1, 1], 2=>[2]} # only 2 groups are detected

Re: Exploring Latest ruby-lib Additions

Manuel Meurer — Thu, 01 Apr 2010 04:23:42 -0000

How is Enumerable#chunk different from the existing Enumerable#group_by?
http://apidock.com/rails/En...

Re: Exploring Latest ruby-lib Additions

Evgeniy Dolzhenko — Wed, 24 Mar 2010 10:43:28 -0000

Hey Nick, thanks, my first comment :)

I tried to add comments to the Gists were seems appropriate, but for MySQL dumps and log files the output examples would be really long and not really descriptive.

Re: Exploring Latest ruby-lib Additions

nphoffman — Wed, 24 Mar 2010 09:59:14 -0000

Thanks for the investigation and write-up, Evgeniy. It'd be great if some output from using your Enumerable#slice_before examples were shown.

Cheers,
Nick