Autovivification is a feature in Perl that automatically creates data structures for undefined values, which can lead to unexpected behaviors. Here are some common pitfalls and gotchas associated with autovivification:
Here’s an example demonstrating autovivification:
# Example of Perl autovivification
my %data;
# Autovivification occurs here
$data{'key1'}{'key2'} = 'value';
# At this point, %data has automatically created a nested structure
# that looks like:
# {
# 'key1' => {
# 'key2' => 'value'
# }
# }
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