How to export hash references

Anonymous Monk has asked for the wisdom of the Perl Monks concerning the following question:

I'm trying to export a reference to a hash but can only access it with a fully-qualified name. What am I doing wrong? Thanks


Package Foo;

use strict;
use warnings;

use Exporter 'import';
our @ISA = qw[Exporter];
our @EXPORT_OK = qw[%env $env];

our %env =  %ENV;
our $env = \%ENV;

1;
[download]


perl -I. -MFoo=%env -le 'print scalar keys %env'
38

perl -I. -MFoo=$env -le 'print scalar keys %$env'
0

perl -I. -MFoo=$env -le 'print scalar keys %$Foo::env'
38

Comment on How to export hash references Download Code

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Re: How to export hash references by hippo (Archbishop) on Feb 14, 2020 at 12:05 UTC
`Package Foo;` This isn't valid. In Perl, package is all in lowercase. Your actual problem (once that's fixed) is that you are not escaping the dollar symbol. `$ perl -I. -MFoo=$env -le 'print scalar keys %$env' 0 $ perl -I. -MFoo=\$env -le 'print scalar keys %$env' 76` [download]	[reply] [d/l] [select]
Re^2: How to export hash references by Anonymous Monk on Feb 14, 2020 at 12:32 UTC
Thanks hippo. That Package thing was a dumb typo, good catch. I'm so used to importing arrays and hashes, without having to escape the sigil, that I forgot about the pesky $hell. Thank you!	[reply]