Beefy Boxes and Bandwidth Generously Provided by pair Networks
Problems? Is your data what you think it is?

(Ovid) Re: A question of style

by Ovid (Cardinal)
on Aug 23, 2000 at 03:07 UTC ( #29131=note: print w/ replies, xml ) Need Help??

in reply to A question of style

I generally prefer to use parens, but be aware that the following two statements are not identical:
&mysub; mysub();
If you call a sub with empty parentheses, the called sub has an empty @_. However, if you call it with a preceding ampersand as in the first example, the current value of @_ gets passed to the sub that you call. This is most useful when calling subs from subs.

This is more than just a matter of style. If you're not aware of that difference, coming back later to maintain that code may just break it. As a result, I prefer not to use ampersands when calling a sub unless I specifically desire to pass the contents of @_ to the called sub.


Comment on (Ovid) Re: A question of style
Download Code

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://29131]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others about the Monastery: (12)
As of 2016-05-31 09:13 GMT
Find Nodes?
    Voting Booth?