The best and complete book

Ruby
1

What is the best and complete book for ruby.
To be specific I want to learn the following things apart from
understanding the language:

  1. thread handling.
  2. Code efficiency, i.e. the time-cost of each instruction.
2

hi,

pickaxe… if you know anther language you are fine :slight_smile:

On 11 Αυγ 2012, at 23:23 , ajay paswan [email protected] wrote:

What is the best and complete book for ruby.
To be specific I want to learn the following things apart from
understanding the language:

  1. thread handling.
  2. Code efficiency, i.e. the time-cost of each instruction.

–
Posted via http://www.ruby-forum.com/.

Panagiotis A.

3

ajay paswan wrote in post #1072056:

What is the best and complete book for ruby.
To be specific I want to learn the following things apart from
understanding the language:

  1. thread handling.
  2. Code efficiency, i.e. the time-cost of each instruction.

I would agree with Pickaxe, a.k.a. Programming Ruby - 2nd edition if you
are using 1.8, 3rd edition if you are using 1.9. The 1st edition is
online for free:
http://ruby-doc.org/docs/ProgrammingRuby/

As for “the time-cost of each instruction” you’re not going to get much
help from any book. You need to profile your code - e.g. using the
Benchmark library or ruby-prof; identify where the hot-spots are, and
then optimise.

Ruby is a dynamic language and it all boils down to method dispatch.
e.g.

a + b

is exactly the same as a.+(b), or a.send(:+, b)

If you have a hotspot which you can’t improve using Ruby, then you can
always rewrite that part in C using the RubyInline gem.