Question

Possible Duplicate:
How do I implement dispatch tables in Perl?

I have a hash table that contains commands such as int(rand()) etc.
How do I execute those commands?

Answer 1

You can use eval($str) to execute Perl code you store in a string variable, $str. You could alternatively store your code as function references within a hash, so something like:

$hash{'random'} = sub { int(rand()) }; 

This way, you could write $hash{'random'}->() to execute the function whenever you want a random value.

See also Implementing Dispatch Tables on PerlMonks.