Beefy Boxes and Bandwidth Generously Provided by pair Networks
Don't ask to ask, just ask
 
PerlMonks  

Re: simple array question

by philipbailey (Chaplain)
on Jan 03, 2011 at 03:22 UTC ( #880122=note: print w/ replies, xml ) Need Help??


in reply to simple array question

It seems that you are trying to assign a list to array @compass. Lists are surrounded by brackets, or parentheses if you prefer that term: (). Instead, you have used braces, which in this case create a reference to an anonymous hash, hence the warning messages.

So you need something more like this:

#!/usr/bin/perl use strict; use warnings; my @compass = ( ["NW", "N", "NE"], ["W", "center", "E"], ["SW", "S", "SE"], ); print $compass[0]->[1];


Comment on Re: simple array question
Download Code
Re^2: simple array question
by tw (Acolyte) on Jan 03, 2011 at 03:40 UTC

    thanks greatly that worked!

    it is nice to have some help when starting, may have been a while before I finally got it.

    seems that some code has { or [ also

    is that a typo or a perl version thing or OS thing or am I still missing something? thanks again

Re^2: simple array question
by chromatic (Archbishop) on Jan 03, 2011 at 04:37 UTC
    Lists are surrounded by brackets....

    Not rvalue lists! Commas, not parentheses, produce literal rvalue lists. The three array references in this variant of that code are a list just as much as in the original version:

    my @compass = ["NW", "N", "NE"], ["W", "center", "E"], ["SW", "S", "SE"], ;

    The difference between the two examples is the precedence of the assignment operator compared to the precedence of the comma operators.

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://880122]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others drinking their drinks and smoking their pipes about the Monastery: (7)
As of 2015-07-03 13:43 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 (53 votes), past polls