Re^2: inconsistent module access

Hmmm seems like I can cut down the test a tad :-) File t.pl ...

use feature 'switch';
no warnings 'experimental';

$m = 'test';
given ( $m )  {
    when ('test')   {  test::Get() };
}

package test;
sub Get {
    require IO::All;
    $data = io();
}
1;
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% perl t.pl 
Undefined subroutine &test::io called at t.pl line 11.
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FWIW, changing the call to io()

$data = IO::All::io()
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Results in a different error.

Can't call method "_package" on an undefined value at /usr/share/perl5
+/vendor_perl/IO/All.pm line 63.
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Re^3: inconsistent module access by haukex (Archbishop) on Jun 25, 2022 at 06:28 UTC
It's what choroba said: because you're using require instead of use, the module's `import` method is not called, which is required for the module to work correctly. `$data = IO::All::io()` Results in a different error. That's because there is no `sub io` anywhere in the distribution. `io` is dynamically generated by the aforementioned `import` in the caller's package. The unusual error comes from the fact that the call gets sent to `IO::All::AUTOLOAD()`, which doesn't handle `io`. You need to say either `use IO::All;` or `require IO::All; IO::All->import();` for the module to work correctly.	[reply] [d/l] [select]
Re^3: inconsistent module access (require vs use) by LanX (Saint) on Jun 25, 2022 at 10:18 UTC
My most esteemed brethren choroba and HaukeX already nailed down your problem. But you seem to be confused about the difference between `use` and `require` from the docs use Module Imports some semantics into the current package from the named module, generally by aliasing certain subroutine or variable names into your package. It is exactly equivalent to `BEGIN { require Module; Module->import( LIST ); }` except that Module must be a bareword. ... `BEGIN` happens at compile-time, if you want to use a module at run-time, you always need to call `->import` too. It's also an FAQ, plz see --> What's-the-difference-between-require-and-use? and plz follow the various links embedded in this node to round up the picture.° HTH! :) Cheers Rolf _{(addicted to the Perl Programming Language :) Wikisyntax for the Monastery} °) well you could already have followed some of them before	[reply] [d/l] [select]

use Module