HH\Asio\mmkw

Returns an Awaitable of Map of ResultOrExceptionWrapper after a mapping operation has been applied to each key/value pair in the provided KeyedTraversable

namespace HH\Asio;

function mmkw<Tk, Tv, Tr>(
    KeyedTraversable<Tk, Tv> $inputs,
  (function(Tk,Tv):Awaitable<Tr>) $callable,
): Awaitable<Map<Tk, ResultOrExceptionWrapper<Tr>>>;

This function is similar to mmk(), except the Map in the returned Awaitable contains values of ResultOrExceptionWrapper instead of raw values.

This function is similar to Map::mapWithKey(), but the mapping of the keys and values is done using Awaitables.

This function is called mmkw because we are returning a map, doing a mapping operation on keys and values, and each value member in the Map is wrapped by a ResultOrExceptionWrapper.

$callable must return an Awaitable.

The ResultOrExceptionWrappers in the Map of the returned Awaitable are not available until you await or join the returned Awaitable.

Parameters

• KeyedTraversable<Tk, Tv> $inputs - The KeyedTraversable of keys and values to map.
• (function(Tk,Tv):Awaitable<Tr>) $callable - The callable containing the Awaitable operation to apply to $inputs.

Return Values

• Awaitable<Map<Tk, ResultOrExceptionWrapper<Tr>>> - An Awaitable of Map of key/ResultOrExceptionWrapper pairs after the mapping operation has been applied to the keys an values in $inputs.