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Re: usage of if on nested hash creating empty slot for non existing value

by bart (Canon)
on Jan 29, 2011 at 16:46 UTC ( [id://885032]=note: print w/replies, xml ) Need Help??


in reply to usage of if on nested hash creating empty slot for non existing value

if (defined $hash->{A}->{LEVEL2}->{LEVEL2_2}) {
To prevent autovivification, make this 
if (exists $hash->{A} && exists $hash->{A}->{LEVEL2} && defined $hash-
+>{A}->{LEVEL2}->{LEVEL2_2}) {

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