From: David Naseby <david.naseby@...>
Date: 2002-12-03T09:04:51+09:00
Subject: Re: learning symbol

> -----Original Message-----
> From: Shannon Fang [mailto:xrfang@hotmail.com]
> Sent: Tuesday, 3 December 2002 10:57 AM
> 
> Tks. But can anybody comments if it worth to convert
> 
> 	case string
>                        when "string1"
> 	...
> 
> to
> 	case string.intern
> 	    when :string1
> 
> ??
Faster using symbols.
Using the following script:
n = 200000
foo = "bar"
t1 = Time.now
n.times do
  case foo
    when "baz"
    when "foo"
    when "bar"
  end
end
puts Time.now - t1
t2 = Time.now

n.times do
  case foo.intern
    when :baz
    when :foo
    when :bar
  end
end
puts Time.now - t2

I got 
0.842 (strings)
0.55 (symbols)

David