HH\Lib\Dict\pull
Returns a new dict with mapped keys and values
namespace HH\Lib\Dict;
function pull<Tk as arraykey, Tv1, Tv2>(
Traversable<Tv1> $traversable,
(function(Tv1): Tv2) $value_func,
(function(Tv1): Tk) $key_func,
): dict<Tk, Tv2>;
- values are the result of calling
$value_func
on the original value - keys are the result of calling
$key_func
on the original value. In the case of duplicate keys, later values will overwrite the previous ones.
Time complexity: O(n * (f1 + f2), where f1 is the complexity of $value_func
and f2 is the complexity of $key_func
Space complexity: O(n)
Parameters
Traversable<Tv1>
$traversable
(function(Tv1): Tv2) $value_func
(function(Tv1): Tk) $key_func
Returns
dict<Tk, Tv2>