Re^3: Function name in a variable, can't recall the concept

> However, there is an exception:

More there are:

use strict;
use warnings;


sub tst {
    warn "tst($_[0]) called\n"
}

my $symbol="tst";


($::{$symbol})->(1);

&{$::{$symbol}}(2);

(main->can($symbol))->(3);

&{main->can($symbol)}(4);
[download]

C:/Perl_524/bin\perl.exe  d:/exp/symbolic_references.pl 
tst(1) called
tst(2) called
tst(3) called
tst(4) called
[download]

NB:

$::{...} is a shortcut for STASH lookup $main::{...} and returns a type-glob

->can(...) returns a coderef

Cheers Rolf
_{(addicted to the Perl Programming Language :)

Wikisyntax for the Monastery
FootballPerl is like chess, only without the dice}

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Re^4: Function name in a variable, can't recall the concept by ikegami (Patriarch) on Apr 15, 2019 at 00:54 UTC
Those aren't really exceptions. Strict refs is only meant to stop you from accidentally using symbolic refs. (After all, you can always turn it off strict refs off if you want to use symbolic refs intentionally.) `%::` and `can` only take symbol names, so they can't accidentally be used incorrectly.	[reply] [d/l] [select]
Re^5: Function name in a variable, can't recall the concept by LanX (Saint) on Apr 15, 2019 at 11:25 UTC
> Those aren't really exceptions. I was referring to "allowed under strict" requirement. Cheers Rolf _{(addicted to the Perl Programming Language :) Wikisyntax for the Monastery FootballPerl is like chess, only without the dice}	[reply]
Re^6: Function name in a variable, can't recall the concept by ikegami (Patriarch) on Apr 16, 2019 at 19:14 UTC
I know. A lot of things are allowed under strict refs (e.g. addition). That doesn't make them exceptions.	[reply]