How do I completely remove a key/value pair from my hash?

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vroom has asked for the wisdom of the Perl Monks concerning the following question: ⭐ (hashes)

Originally posted as a Categorized Question.

Comment on How do I completely remove a key/value pair from my hash?

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Re: How do I completely remove a key/value pair from a hash?⭐ by vroom (His Eminence) on Jan 20, 2000 at 20:38 UTC
use delete `#Removes key and its associated value delete $hash{key}; #gets rid of a slice of key/value pairs at once; delete @hash {"first","second","third"};` [download]	[reply] [d/l]
Re: How do I completely remove a key/value pair from my hash?⭐ by chromatic (Archbishop) on Mar 06, 2000 at 03:54 UTC
Note that undef (Which many people try first) is the wrong answer. It only sets the value associated with a key to undef. That is usually not what you want: `my %hash = ('one' => 'two', 'two' => '2'); undef $hash{'one'}; print keys %hash;` [download] This prints: twoone. Adding: `print values %hash;` prints: 2.	[reply] [d/l] [select]

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