From: 7stud -- <bbxx789_05ss@...>
Date: 2009-02-23T15:23:10+09:00
Subject: Re: Improving hexadecimal escaping performance

I単aki Baz Castillo wrote:
> I don't like 
> too
> much its approach using "sprintf". Is there other way more ellegant?
> (performance is the mos important requeriment anyway).
> 

pickaxe2, p. 23:
------
Another output method we use a lot is printf....
------

pickaxe2, p. 526:
--------
printf

Equivalent to io.write sprintf(...)
--------

The Ruby Way (2nd), p. 72:
----------
2.9 Formatting a String

This is done in Ruby as it is in C, with the sprintf method.
---------


>Is there other way more ellegant?

def hex_escape(str)
  str.gsub(/[^a-zA-Z0-9_\-.]/n) do |match|
    "%%%02X" % match[0]
  end
end

s = "?<>辿"
puts hex_escape(s)

--output:--
%3F%3C%3E%C3%A9





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