From: Josef 'Jupp' SCHUGT <jupp@...>
Date: 2003-11-12T03:58:43+09:00
Subject: Re: macros

Hi!

* T. Onoma; 2003-11-11, 13:12 UTC:
> perhaps there's another way to do what i want, but i'm not sure. i
> keep reusing the same snippit of code over and over in this one
> class that includes a few variables, a dumbed-down example:
> 
>   "/Path/To/#{variable}/Directory"

You can (ab)use the C preprocessor in the following manner:

$ cat trick_rb.c

  #define sniplet(a) ("/Path/To/" + a + "/Directory")
  puts sniplet('some')

$ gcc -E trick_rb.c > trick.rb
$ cat trick.rb
  # 1 "trick_rb.c"

  puts ("/Path/To/" +  'some'  + "/Directory")

$ ruby trick.rb

  /Path/To/some/Directory

Josef 'Jupp' Schugt
-- 
                        .-------.
message > 100 kB?   /   |       |
sender = spammer?  /    | R.I.P.|
text   = spam?    /  ___|       |___