Beefy Boxes and Bandwidth Generously Provided by pair Networks
"be consistent"

Re: perlfunc index name conflict

by Anonymous Monk
on Sep 23, 2012 at 22:40 UTC ( #995266=note: print w/ replies, xml ) Need Help??

in reply to perlfunc index name conflict

Well, CORE::index, but FWIW, I doubt PDL exports an index function

Comment on Re: perlfunc index name conflict
Replies are listed 'Best First'.
Re^2: perlfunc index name conflict
by syphilis (Chancellor) on Sep 23, 2012 at 23:09 UTC
    I doubt PDL exports an index function

    I expected the same ... but, apparently, not so:
    use warnings; use strict; use warnings; use PDL; print index('hello world', 'lo w'), "\n";
    This outputs:
    Argument "hello world" isn't numeric in subroutine entry at lin +e 7. Argument "lo w" isn't numeric in subroutine entry at line 7. 0
    If we comment out the "use PDL;" we then get the expected output of "3".
    As Anonymous Monk said, one solution is to use CORE::index() instead of index().
    Another solution is to use PDL(); instead of use PDL;

    But it's a bit rude of PDL to be exporting this function by default, isn't it ?

    Update: The PDL documentation states:
    PDL includes about a dozen perl modules that form the core of the language, plus additional modules that add further functionality. The perl module "PDL" loads all of the core modules automatically, making their functions available in the current perl namespace.
    Exports "use PDL;" exports a large number of routines into the calling namespace. If you want to avoid namespace pollution, you must instead "use PDL::Lite", and include any additional modules explicitly.
    So this *is* documented ... and it seems that the recommended solution is to "use PDL::Lite;".


Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://995266]
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others musing on the Monastery: (5)
As of 2015-11-25 23:54 GMT
Find Nodes?
    Voting Booth?

    What would be the most significant thing to happen if a rope (or wire) tied the Earth and the Moon together?

    Results (693 votes), past polls