Beefy Boxes and Bandwidth Generously Provided by pair Networks
Your skill will accomplish
what the force of many cannot

Re: Conditional loading of methods

by jasonk (Parson)
on Dec 09, 2008 at 04:33 UTC ( #729079=note: print w/replies, xml ) Need Help??

in reply to Conditional loading of methods

The only way you are going to get around the syntax problems is to only compile the code in question if the module exists....

eval "use Foo::Bar"; eval <<"END" unless $@; sub my_method { # Code } END

but because that is going to introduce it's own problems, I would opt for moving that code into a module or a library...

eval "use Foo::Bar"; if ( $@ ) { require ""; } else { require ""; }

As for the second part, because you are using eval BLOCK rather than eval STRING, the use will still be evaluated at compile time, rather than at run time. You could get the effect you are looking for by breaking the use up into it's components though...

eval { require Foo::Bar; import Foo::Bar; }
We're not surrounded, we're in a target-rich environment!

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://729079]
[holli]: I got into a fight yesterday and won.
[holli]: No, that's not true. I started it.

How do I use this? | Other CB clients
Other Users?
Others making s'mores by the fire in the courtyard of the Monastery: (7)
As of 2017-12-13 17:53 GMT
Find Nodes?
    Voting Booth?
    What programming language do you hate the most?

    Results (373 votes). Check out past polls.