greengaroo:

Odd, I find your examples a good case for using the second one. Again, different people will find different things more clear.

When I use hashes, I generally use $$h{foo} in preference to $h->{foo}, primarily because it's easier to type, and I use hashes quite a bit. If I were trying to make it visually distinctive, I'd make the harder to type one be for the less frequently used case. Thus, I'd use something like:

$$hashref{key}->('arg');

[download]

To my eye, that stands out better. (But with my luck, it would blow up, so I'd better whip up a test...)

$ cat t.pl
use strict;
use warnings;

sub p { print "foo(", join(", ", @_), ")\n"; }

my $hr = { key=>\&p };

$$hr{key}->('arg');

$ perl t.pl
foo(arg)

[download]

...roboticus

When your only tool is a hammer, all problems look like your thumb.

In reply to Re^3: How to call a sub-routine ref by roboticus
in thread How to call a sub-routine ref by greengaroo

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