note
shmem
<blockquote><i>
1)using input record separator as newline indicator is very interesting. Never seen it before but works well. Any reason?
I am assuming it's just a style issue?
</i></blockquote>
<p>I guess it's more along "a \n is a \n is a \n" - $/ is a global, and that could be changed far away without you knowing it; so it's more safety than style.
<blockquote><i>
2)Below code from tutorial does not work when I insert my next to variable.. can someone explain this?
</i></blockquote>
<p>You are allocating a lexical $x, not a package global (which would be either <c>use vars '$x'</c> or <c>our $x</c>), and [doc://local] aliases only package globals. You can't (shouldn't) allocate globs and lexicals of the same name in the same scope:
<c>
our $x;
my $x; # gives a warning
</c>
<c>
our $x;
{
my $x; # ok
}
</c>
<blockquote><i>
3)can someone explain further on "lexical variables are declared at compile-time, not initialised?
Is this because BEGIN runs during compile-time? I sneaked in a new my $foo = something inside of BEGIN
block and execution of the code came out w/ foo is something during BEGIN phase
</i></blockquote>
<p>"lexical variables are declared at compile-time, not initialised" means "the container is created, but
nothing is put into it". The initialization (= puting something into the bucket) happens at run time.
BEGIN blocks are compiled <i>and immediately run</i>, that's why "code came out w/ foo is something during BEGIN phase".
<p>See also [id://94027].
<div class="pmsig"><div class="pmsig-510280">
<p>--shmem
<small><small><pre>
_($_=" "x(1<<5)."?\n".q·/)Oo. G°\ /
/\_¯/(q /
---------------------------- \__(m.====·.(_("always off the crowd"))."·
");sub _{s./.($e="'Itrs `mnsgdq Gdbj O`qkdq")=~y/"-y/#-z/;$e.e && print}</pre></small></small>
</div></div>
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