HH\Lib\Dict\from_values
Requires the Hack Standard Library to be installed.
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This function is available as Dict\from_values() in Facebook's www repository.
Returns a new dict keyed by the result of calling the given function on each corresponding value
namespace HH\Lib\Dict;
function from_values<Tk as arraykey, Tv>(
Traversable<Tv> $values,
(function(Tv): Tk) $key_func,
): dict<Tk, Tv>;
In the case of duplicate keys, later values will overwrite the previous ones.
- To create a dict from keys, see
Dict\from_keys(). - To create a dict from key/value tuples, see
Dict\from_entries().
Time complexity: O(n) Space complexity: O(n)
Parameters
Traversable<Tv> $values(function(Tv): Tk) $key_func
Returns
dict<Tk, Tv>