Re^4: Contents of @_ using subroutine signatures with default values (flag)


P is for Practical
	PerlMonks

Re^4: Contents of @_ using subroutine signatures with default values (flag)

by LanX (Saint)

on Jul 14, 2020 at 10:21 UTC ( [id://11119292]=note: print w/replies, xml )

Need Help??

in reply to Re^3: Contents of @_ using subroutine signatures with default values (flag)
in thread Contents of @_ using subroutine signatures with default values

> See this p5p post for more details.

Thanks Dave, I will.

... this will be a longer read this evening. OO

On a side note: I was fascinated to learn (rediscover ?), that a call &sub without arguments has full access to the callers @_.

use strict;
use warnings;
use Data::Dump qw/pp dd/;


sub foo {
    warn pp \@_;
    push @_,@_+1
}

sub tst {
    &foo;
    &foo;
    &foo;
    warn pp \@_;
}

tst(1);
[download]

-*- mode: compilation; default-directory: "d:/exp/" -*- Compilation started at Tue Jul 14 12:21:10 C:/Perl_524/bin\perl.exe -w d:/exp/access_@_.pl [1] at d:/exp/access_@_.pl line 7. [1, 2] at d:/exp/access_@_.pl line 7. [1, 2, 3] at d:/exp/access_@_.pl line 7. [1 .. 4] at d:/exp/access_@_.pl line 15. Compilation finished at Tue Jul 14 12:21:10
[download]

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

Wikisyntax for the Monastery}