How to handle subroutine redefined errors in Perl

So I have a file that in short has this problem...

#!/usr/bin/perl -w
package Foo;

use strict;
use POSIX;

...

sub remove {
  ...
}
...

and I get a get an error saying the subroutine remove has been redefined. I know the problem, there is a subroutine called remove in POSIX. However, I don't know how to handle it. How is this problem typically solved?

Answers


do this:

use POSIX ();

which will stop the export all default functionality of the POSIX module. You will then need to prefix all POSIX methods with POSIX:: such as:

POSIX::remove(filename)

for the POSIX remove function.


The other way to suppress this warning is to put your subroutine redefinition inside a no warnings 'redefine' block:

{
    no warnings 'redefine';
    sub remove { ... }
}

You can exclude certain symbols from being normally exported with the '!name' directive (see perldoc Exporter), e.g.:

#!/usr/bin/perl -w
package Foo;

use strict;
use POSIX '!remove';

...

sub remove {
  ...
}
...

Subroutine XYZ redefined at line N [perl error]

You could wrap your routine in no warnings 'redefine' (which is lexically scoped):

no warnings 'redefine';

sub XYZ{

...
...

}

It worked for me!


Need Your Help

What is boilerplate code?

terminology definition boilerplate

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