Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl Monk, Perl Meditation
 
PerlMonks  

Re: what is bad about this?

by kutsu (Priest)
on Feb 06, 2006 at 21:42 UTC ( #528344=note: print w/replies, xml ) Need Help??


in reply to what is bad about this?

Because your program won't run (actually it will run but will also fill up your logs with a lot of unnessary warnings) under warnings and strict (if you want to know why it's a good idea to have them on Use strict warnings and diagnostics or die). But as to why it's a bad idea in general check out this quote from diagnostics:

Scalar value @a[1] better written as $a[1] at -e line 1 (#1) (W syntax) You've used an array slice (indicated by @) to select a single element of an array. Generally it's better to ask for a scalar value (indicated by $). The difference is that $foo[&bar] always behaves like a scalar, both when assigning to it and when evaluating its argument, while @foo[1] behaves like a list when you assign to it, and provides a list context to its subscript, which can do weird things if you're expecting only one subscript.
On the other hand, if you were actually hoping to treat the array element as a list, you need to look into how references work, because Perl will not magically convert between scalars and lists for you. See perlref.

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://528344]
help
Chatterbox?
[MidLifeXis]: heh.
[MidLifeXis]: Most likely it is a code that some undocumented system, hidden behind layers of IT, deep in the bowels of the building under the machine room floor, reads that code to keep a presence switch from going off. :-b
[MidLifeXis]: I think I forgot "running on a farm of commodore 64, vic 20s, trs 80s, and apple ]|[e systems"
[GotToBTru]: oh I know what it is .. but it is a number only slightly useful to me and of no possible use to our customer
[MidLifeXis]: Whew - you just saved the free world. <o)
[GotToBTru]: i guess it's a placeholder, the code will only fill it in if there is nothing else to use
[GotToBTru]: but then .. if you have nothing to say, why not say nothing?

How do I use this? | Other CB clients
Other Users?
Others romping around the Monastery: (8)
As of 2017-01-20 19:09 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    Do you watch meteor showers?




    Results (176 votes). Check out past polls.