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

Answer: Is it better to return a hash of hashes or a reference to a hash of hashes?

( #149962=categorized answer: print w/ replies, xml ) Need Help??

Q&A > subroutines > Is it better to return a hash of hashes or a reference to a hash of hashes? - Answer contributed by Juerd

One thing I'd like to add is that returning a hash reference allows for beatiful syntax when you're using a single element from it.
sub hash { qw(foo bar baz xyzzy) } sub hashref { return { qw(foo bar baz xyzzy) } } my %dummy = hash; $dummy = $dummy{foo}; # Afaik, there is no direct syntax to get a single element # but with hash refs, there is: $dummy = hashref->{foo} # equals $dummy = ${ hashref() }{foo}, which is ugly.

  • Comment on Answer: Is it better to return a hash of hashes or a reference to a hash of hashes?
  • Download Code
Log In?
Username:
Password:

What's my password?
Create A New User
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others avoiding work at the Monastery: (3)
As of 2016-07-02 02:04 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    What is your favorite alternate name for a (specific) keyboard key?


















    Results (18 votes). Check out past polls.