Beefy Boxes and Bandwidth Generously Provided by pair Networks
The stupid question is the question not asked
 
PerlMonks  

Re^2: Logical operations on arrays

by Jenda (Abbot)
on Oct 04, 2012 at 23:03 UTC ( #997342=note: print w/ replies, xml ) Need Help??


in reply to Re: Logical operations on arrays
in thread Logical operations on arrays

There's no reason to work hard to set the values in the hash to ones, leave them undefined and use exists() within the grep{}. Also there is no reason to push the elements into the @intersection, just assign them.

my %hash1; @hash1{@array1} = (); my @intersection = grep {exists $hash1{$_} } @array2;

Jenda
Enoch was right!
Enjoy the last years of Rome.


Comment on Re^2: Logical operations on arrays
Download Code

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://997342]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others wandering the Monastery: (12)
As of 2014-09-18 19:13 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

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











    Results (121 votes), past polls