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Answer: How do I take a slice of a hash reference?

by japhy (Canon)
on May 15, 2001 at 03:36 UTC ( #80401=categorized answer: print w/replies, xml ) Need Help??

Q&A > references > How do I take a slice of a hash reference? - Answer contributed by japhy

Here's how:
@slice = @{$array_ref}[ @idx ]; @slice = @{$hash_ref}{ @keys };
And there's no easy way to "pretend" a list is a hash. You need to use a hash reference explicitly:
$scalar = {1, 'a', 2, 'b'}->{$key}; @slice = @{ { 1, 'a', 2, 'b' } }{ @keys };

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[ambrus]: "could evacuate to open schoolyard and then call or go back to school" => wait what? like power cycling the school building by removing all the kids and then reentering them? how would that fix the problems?
[ambrus]: https://www.xkcd. com/723/ is relevant about earthquakes and phones
[ambrus]: must be this earthquake
[ambrus]: (It's convenient that I live in a place with no earthquakes or hurricanes. One less bad thing to look out for.)

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