A preliminary attempt to look at the source code of the module foundered

It's here, the bit of code that is relevant here is "has 'fh' => ( isa => InstanceOf['IO::Handle'], ..." (and yes, this is from Moo).

To put 1nickt's suggestion into code - if you modify your code like the following, it works for me:

use IO::Handle;
my $sm = IO::Handle->new;
open ($sm, ...

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In reply to Re: Almost certainly a module documentation issue by haukex
in thread Almost certainly a module documentation issue by dd-b

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