Beefy Boxes and Bandwidth Generously Provided by pair Networks
go ahead... be a heretic
 
PerlMonks  

Re^7: Using an array element as a loop iterator

by Eily (Hermit)
on Nov 08, 2013 at 20:14 UTC ( #1061763=note: print w/ replies, xml ) Need Help??


in reply to Re^6: Using an array element as a loop iterator
in thread Using an array element as a loop iterator

It surely is ^^. The problem is that you can't use that construct like this: while( $a[0] = shift `cat file` ) (but that is a unusual way to read a file, indeed). So you do have to set @a1 first, which is the first part of my for loop. And if @a1 contains a value that is false, $a[0] = shift @a1 will be false as well, so the loop will stop early. defined($a[0] = shit @a1) would work, unless you want to use undef as a value. That's why I used @a1 in scalar context as the third part of the for loop.


Comment on Re^7: Using an array element as a loop iterator
Select or Download Code
Re^8: Using an array element as a loop iterator
by LanX (Canon) on Nov 08, 2013 at 20:19 UTC
    agreed! ++ =)

    Cheers Rolf

    ( addicted to the Perl Programming Language)

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1061763]
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: (7)
As of 2014-09-20 11:22 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    How do you remember the number of days in each month?











    Results (158 votes), past polls