Beefy Boxes and Bandwidth Generously Provided by pair Networks
Clear questions and runnable code
get the best and fastest answer
 
PerlMonks  

Re: Clearing an Array of Array's from memory

by bear0053 (Hermit)
on Aug 29, 2003 at 15:43 UTC ( #287722=note: print w/ replies, xml ) Need Help??


in reply to Clearing an Array of Array's from memory

You can undef the array by doing the following:

undef(@myarray);
This will make @myarray = undef. I don't believe clearing it out will slow down your program any despite the size of the array.


Comment on Re: Clearing an Array of Array's from memory
Download Code
Replies are listed 'Best First'.
Re^2: Clearing an Array of Array's from memory (=undef)
by tye (Cardinal) on Aug 29, 2003 at 17:57 UTC
    This will make @myarray = undef.

    I suspect this is just a case of casual, imprecise language, but you are likely to mislead people with that particular phrasing:

    my @myarray = undef; print "\@myarray contains ", 0+@myarray, " elements.\n"; __END__ Produces: @myarray contains 1 elements.
    Because     @myarray = undef;
    is the same as     @myarray = ( undef );
    which isn't at all the same as     undef @myarray;
    undef is a function that undefines what is passed to it and then returns a not-defined() scalar value.

                    - tye

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://287722]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others scrutinizing the Monastery: (8)
As of 2015-07-30 17:58 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 (273 votes), past polls