call a hash in a sub

[donny750]

hi,

How can i do to call a hash in a sub ?

Thanks

 

[stevexff]

Do you want to pass hash to a sub as a parameter? Or return a hash from a sub?

Steve

[small]"Every program can be reduced by one instruction, and every program has at least one bug. Therefore, any program can be reduced to one instruction which doesn't work." (Object:erlDesignPatterns)[/small]

 

[donny750]

i want to pass hash to a sub as parameter
i've try this

sub mysub {
%myhash = @_ ;
..

}

but when i use %myhash in my sub i've nothing
he don't access to the hash

 

[Kirsle]

Read from @_ in array context.

my (%myhash) = @_;

-------------
Kirsle.net | Kirsle's Programs and Projects

 

[ishnid]

No need for the parens around %myhash, this'll do it:

my %hash = ( one => 1, two => 2 );
mysub(%hash);

sub mysub {
   my %myhash = @_;
   print $myhash{one},"\n";
   print $myhash{two},"\n";
}

Of course, here you're passing by value so you won't be able to modify the contents of %hash. If you want to do that, you'll have to pass a reference instead.

 

[donny750]

i've test your script

it's run good

but if i modifiy my script and try it's not run

 

[ishnid]

It may be you're passing in an array of hashes (@arrayval) and then trying to retrieve it as a hash (%configuration), which certainly isn't going to do what you want it to do.