Beefy Boxes and Bandwidth Generously Provided by pair Networks
We don't bite newbies here... much
 
PerlMonks  

Re^3: @array elements multiplication with another array elements.

by tobyink (Abbot)
on Oct 31, 2012 at 07:51 UTC ( #1001621=note: print w/ replies, xml ) Need Help??


in reply to Re^2: @array elements multiplication with another array elements.
in thread @array elements multiplication with another array elements.

It uses a prototype of &\@\@. That means the two arrays get implicitly turned into arrayrefs by the Perl parser. The body of the sub just sees a coderef and two arrayrefs - not a flattened list. See perlsub.

perl -E'sub Monkey::do{say$_,for@_,do{($monkey=[caller(0)]->[3])=~s{::}{ }and$monkey}}"Monkey say"->Monkey::do'


Comment on Re^3: @array elements multiplication with another array elements.
Download Code
Replies are listed 'Best First'.
Re^4: @array elements multiplication with another array elements.
by grizzley (Chaplain) on Oct 31, 2012 at 08:31 UTC
    That's true! Wow, thanks, first example of prototypes being useful
    c:\>perl -le "sub f(\@\@) { print 'array ', ++$cnt ,': ', join ' ', @$ +_ for @_ } @a=(1..5, 11,12);@b=(13..15); f @a, @b" array 1: 1 2 3 4 5 11 12 array 2: 13 14 15

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1001621]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others examining the Monastery: (11)
As of 2015-07-07 18:56 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 (93 votes), past polls