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Re^4: Undesirable parent hash keys (concept?)

by tobyink (Abbot)
on Jan 11, 2013 at 10:34 UTC ( #1012856=note: print w/ replies, xml ) Need Help??


in reply to Re^3: Undesirable parent hash keys (concept?)
in thread Undesirable parent hash keys

autovivification has lexical scope, so if other modules rely on autovivification, then using no autovivification in your script/module shouldn't harm them. (The only exception I could think of would be modules that play with B::Hooks::Parser, etc, to do weird stuff within your lexical scope.)

I don't see much value in explicitly specifying the 'exists' option for the autovivification pragma, as the default options are pretty sane: when no autovivification is in effect, autovivification will still be allowed for "store" operations...

use strict; use warnings; no autovivification; # default options use Data::Dumper; my $ref = undef; $ref->{foo}[0]{bar}[0] = 42; # store print Dumper $ref;
perl -E'sub Monkey::do{say$_,for@_,do{($monkey=[caller(0)]->[3])=~s{::}{ }and$monkey}}"Monkey say"->Monkey::do'


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