From: Harry Kakueki <list.push@...>
Date: 2007-05-23T11:35:20+09:00
Subject: Re: Substituting variables in a method

On 5/23/07, Michael W. Ryder <_mwryder@worldnet.att.net> wrote:
> Rick DeNatale wrote:
> > On 5/22/07, Harry Kakueki <list.push@gmail.com> wrote:
> >
> >> str4 = str3.gsub("#{str1}","#{str2}")
> >
> > The string interpolation is completely unnecessary, this is the same as:
> > str4 = str3.gsub(str1, str2)
> >
> >
> How does one know when to use string interpolation and when it isn't
> needed?  I know that if I want to put a variable in the middle of a
> string I have to use interpolation so I thought I also needed something
> like that in this case as I didn't want to convert c's to d's.
>
>

OK, I gave a bad example.
Maybe this is a little better.

str1 = "str1 string. "
str2 = "more stuff"
str3 = str1.gsub(str1,str2)
str4 = str1.gsub("str1","str2")
str5 = str1.gsub("str1","Now #{str2}")

p str1
p str2
p str3
p str4
p str5

Harry



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