From: Robert Klemme <shortcutter@...>
Date: 2012-08-16T23:43:48+09:00
Subject: Re: case vs if-else

On Thu, Aug 16, 2012 at 4:23 PM, ajay paswan <lists@ruby-forum.com> wrote:
> Robert Klemme wrote in post #1072532:
>> On Thu, Aug 16, 2012 at 1:43 PM, ajay paswan <lists@ruby-forum.com>
>> wrote:
>>> Which one is faster?
>>
>> Measure it.  There is Benchmark.
>>
> means? what measure? and who'll measure?

You want to know which one is faster so you'll measure it.

require 'benchmark'

Benchmark.bm do |b|
...
end

http://www.ruby-doc.org/stdlib-1.9.3/libdoc/benchmark/rdoc/index.html

>> SMARTNESS = {
>>  "A" => "you are smart",
>>  "B" => "you are dumb",
>> }
> is it mapping? looks like one.

It's a Hash stored in a constant.  A hash lookup is typically quite
fast compared to control flow - especially if you increase the number
of alternatives.  But: measure it!

>> puts SMARTNESS[grade]
>>
>> Cheers
>>
>> robert
>
> Whats that

What?  That's my name.

Kind regards

robert


-- 
remember.guy do |as, often| as.you_can - without end
http://blog.rubybestpractices.com/