Beefy Boxes and Bandwidth Generously Provided by pair Networks
Just another Perl shrine

Re^3: Clear / Initialize multiple hashes

by BrowserUk (Pope)
on Sep 19, 2013 at 18:45 UTC ( #1054900=note: print w/replies, xml ) Need Help??

in reply to Re^2: Clear / Initialize multiple hashes
in thread Clear / Initialize multiple hashes

but later on if I want to clear all of them how should I go about it?

The simplest way is to scope them such that they get reinitialised by re-entering the scope each time you want to re-use them:

for( some loop condition or contruct ) { my( %hash1, %hash2, %hash3 ); ## do stuff with them ... }

Each time that loop iterates, the hashes will be reinitialised for you.

But, it you really need to do it manually, you could use:

undef %$_ for \(%h1,%h2,%h3);

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1054900]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others romping around the Monastery: (6)
As of 2016-10-22 02:12 GMT
Find Nodes?
    Voting Booth?
    How many different varieties (color, size, etc) of socks do you have in your sock drawer?

    Results (291 votes). Check out past polls.