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moritz/change-hash-keys-recursively.p6 Secret

Created May 5, 2021 09:54
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Change hash keys recursively in Raku #rakulang
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change-hash-keys-recursively.p6
my %input = (
'a-b' => [2, { 'b-c' => 'd-x' }]
);
multi change-keys(%input, &changer) {
%input.map(-> $p { changer($p.key) => change-keys($p.value, &changer) }).hash
}
multi change-keys(@input, &changer) {
@input.map(-> $x { change-keys($x, &changer)}).list;
}
multi change-keys($input, &changer) { $input }
say change-keys(%input, { .subst('-', '_') })
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