Beefy Boxes and Bandwidth Generously Provided by pair Networks
XP is just a number
 
PerlMonks  

Re: list assignment to list in scalar context (boolean)

by tye (Sage)
on Nov 09, 2012 at 03:45 UTC ( #1003054=note: print w/replies, xml ) Need Help??


in reply to list assignment to list in scalar context

List assignment in a scalar context returns the number of items in the right-hand side because that is extremely useful as a Boolean test, as shown in your own example:

while( my( $k, $v ) = each %h ) {

You wouldn't want that loop to terminate early just because one of the values in %h was false.

- tye        

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1003054]
help
Chatterbox?
and all is quiet...

How do I use this? | Other CB clients
Other Users?
Others meditating upon the Monastery: (6)
As of 2018-06-24 07:11 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    Should cpanminus be part of the standard Perl release?



    Results (126 votes). Check out past polls.

    Notices?