From: Bill Guindon <agorilla@...>
Date: 2006-02-15T08:44:12+09:00
Subject: Re: simple programming q

On 2/14/06, grrr <grrr@toto.maatti> wrote:
> I am a ruby newbie. I want to make a simple script that replaces certain
> characters in a block of text with specific other characters.
>
> I am wondering what kind of loop or algo is thought to be most effective
> for this kind of work..
> Maybe go through the block of text with a hashing table and replace
> each 'hit'? Would this be reasonable approach?
>
> #example pseudocode idea
> blokoftxt = 'Theres some text in block.'
> replacekey = { 'T' = 'W', 'a' = 'o', 'o' = 'a' }
>
> blokoftxt.each ( if equal to a replacekey, replace with key value )

Here's a simple answer, using a regular expression.

blokoftxt = 'Theres some text in block.'
replacekey = { 'T' => 'W', 'a' => 'o', 'o' => 'b' }
replacekey.each {|key, val| blokoftxt.gsub!(/#{key}/, val)}

> This would mean going through each character in the textblock. I guess one
> could conversely go through the replacekey array and match to the
> textblock?? Which way to go?
>
> J Von Rubiginner
>
>
>
>


--
Bill Guindon (aka aGorilla)
The best answer to most questions is "it depends".