From: scooterm@...
Date: 2008-01-03T12:25:04+09:00
Subject: change the symbol in an interpolated string value?

PROBLEM:
I would like to be able to change the symbol in an interpolated string
value.
For example:

# before
whoever   = "World";
message =  "Hello #{whoever}";
puts message;

# after
whoever   = "World";
## message =  "Hello @{whoever}";    ## one arbitrary example
## message =  "Hello ${whoever}";     ## another example
## message =  "Hello ???{whoever}"; ## yet another
## message =  "Hello ___whoever___";   ## or even yet another, no
braces this time
puts message;

I would like to be able to make it so any of the commented-out
versions could work, just as the "before" version works.

What's the ruby-way of doing this?