In the Cookbook, it's page 446 "A Warning on Indirect
Object Notation" and in OOP it's pp98-101 "Another way to
call a constructor".
To summarise, there are two problems with it:
- The classname in method CLASS must be
a bare symbol, a block or a scalar variable. It
can't be just any old scalar expression. This can
lead to surprising parsing.
- Perl needs to guess whether the method is, in
fact, a method or a function. It can sometimes get this
wrong. Particularly if your method has the same name as
a function in your main package.
In general it will work fine, but the times that
it won't work are so difficult to keep a track of that it's
best to never use it. There's no good reason not to
use the alternative CLASS->method syntax, so I
see it as a good habit to get into.
Perl Training in the UK <http://www.iterative-software.com>
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