"...use v5.24;..."

"Dereferencing a reference to a typeglob" can be done with Postfix Dereference Syntax (i.e. $globref->**). Some examples: 

$ perl -v | head -2 | tail -1
This is perl 5, version 24, subversion 0 (v5.24.0) built for darwin-th
+read-multi-2level
$ alias perle
alias perle='perl -Mstrict -Mwarnings -Mautodie=:all -E'
$ perle 'use 5.024; my $x = \*STDERR; say "OUT"; say { $x->** } "ERR"'
OUT
ERR
$ perle 'use 5.024; my $x = \*STDERR; say "OUT"; say { $x->** } "ERR"'
+ > /dev/null
ERR
$ perle 'use 5.024; my $x = \*STDERR; say "OUT"; say { $x->** } "ERR"'
+ 2> /dev/null
OUT
$

[download]

I wrote a fair amount about using this syntax in general, just yesterday: "Re^3: Syntax Question Related to "join" on a Complex Data Structure [postderef and postderef_qq]". You'll find examples of "$arrayref->@*", which may be closer (than "$globref->**") to the type of thing you're after.

— Ken

In reply to Re: Dereferencing a reference to a typeglob? [Postfix Dereference Syntax] by kcott
in thread Dereferencing a reference to a typeglob? by Anonymous Monk

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