From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of
[EMAIL PROTECTED]
Sent: 27 July 2005 14:46
To: activeperl@listserv.ActiveState.com
Subject: Requirement or Syntactic Sugar?
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Hi, wizards.
I've a small question this time. Working with WMI code
(Win32_whatnot), I see two different syntaxes and I'm wondering if the
"fancy" one is a requirement or if it's just pretty formatting. Here
they are.
Both start from this point: $stuff = $self->WQL( -query =>
"SELECT * FROM Win32_whatnot",
-single => 1 );
Then the first format is just: $thing = $stuff->member;
This is a subrouting call. Assuming that $stuff is a blessed reference,
then this is effectively '$thing = ref($stuff)::member($stuff);'
While the fancy one is: $thing = $stuff->{member};
This is a hash lookup, assuming that $stuff is a hash reference.
Since both work in the code that's using them, I suspect that
the curlies in the fancy example are not really necessary. Am I right in
this?
You may be right in this instance as I believe that it is common for
Win32 objects to provide access to their attributes using either method.
However, in general, the two are not interchangeable.
I know this is a trivial question, but I'm trying to unify a
bunch of different modules, would like to get them stylistically in
line, and don't want to mess things up by removing the curlies if
they're really needed. OTOH, should they be added to the module code
that already works without them?
As long as both methods work, then it is your call really. A consistent
coding style is good, but then again, as they say, "if it ain't broke,
don't fix it". You will have to decide which is more important.
HTH
Thanks!
Deane
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