Beefy Boxes and Bandwidth Generously Provided by pair Networks
Think about Loose Coupling
 
PerlMonks  

Re^3: regular expressions with !

by Nkuvu (Priest)
on Sep 14, 2006 at 18:46 UTC ( #572975=note: print w/ replies, xml ) Need Help??


in reply to Re^2: regular expressions with !
in thread regular expressions with !

Don't use unless; it makes it too easy to misunderstand code.

I dislike overgeneralizations like this, personally. The following code is perfectly clear:

do_something() unless $big_honkin_error;

I'm not saying that you can't avoid unless and make the code still clear, of course:

do_something() if not $big_honkin_error:

but the unless version is just fine.

I wouldn't use unless at the beginning of a condition, however. But that's related to putting the important parts at the beginning of the statement as per perlstyle recommendations. Specifically:

Just because you *CAN* do something a particular way doesn't mean that you *SHOULD* do it that way. Perl is designed to give you several ways to do anything, so consider picking the most readable one. For instance

PrivoxyWindowOpen(FOO,$foo) || die "Can't open $foo: $!";

is better than

die "Can't open $foo: $!" unless open(FOO,$foo);

because the second way hides the main point of the statement in a modifier.


Comment on Re^3: regular expressions with !
Select or Download Code

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://572975]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others having an uproarious good time at the Monastery: (11)
As of 2015-07-07 12:25 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    The top three priorities of my open tasks are (in descending order of likelihood to be worked on) ...









    Results (88 votes), past polls