HH\Lib\Dict\map_async
Requires the Hack Standard Library to be installed.
Facebook Engineer?
This function is available as Dict\gen_map() in Facebook's www repository.
Returns a new dict where each value is the result of calling the given async function on the original value
namespace HH\Lib\Dict;
function map_async<Tk as arraykey, Tv1, Tv2>(
KeyedTraversable<Tk, Tv1> $traversable,
(function(Tv1): Awaitable<Tv2>) $value_func,
): Awaitable<dict<Tk, Tv2>>;
For non-async functions, see Dict\map().
Time complexity: O(n * f), where f is the complexity of $async_func
Space complexity: O(n)
Parameters
KeyedTraversable<Tk, Tv1> $traversable(function(Tv1): Awaitable<Tv2>) $value_func