Re: Why do we need #set $x = 1

On Sun, May 17, 2009 at 10:14:29PM -0700, [email protected] wrote:
>    Why do we need?
>    #set $x = 1
>    why not just
>     $x=1
>    Thanks


Because the former is far easier to parse :)

To properly "pick up" the latter, we would need to identify constructs
where the dollar sign was used and see if there was an assignment
occurring. Instead we use a 'raw' dollarsign to denote the invocation of
the NameMapper. Anywhere you use $foo, the NameMapper will be invoked to
look for a variable named 'foo' in your searchList(s).

The use of '#set' and other hash directives manipulations of Cheetah's
state, whereas '$' directives are purely read-only, output related
statements. This helps us keep a logical separation between the
"language" portion of Cheetah, and the "output generation".


The four extra characters are worth it IMHO ;)


Cheers
-- 
-R. Tyler Ballance
Slide, Inc.

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