Skip to main content

from_entries

Note

This is a point-in-time snapshot of the API documentation from January 2026. Going forward, we will not be maintaining a public copy of these references, and recommend users to refer to the built-in signature helpers available in the Hack LSP instead for complete and up-to-date information.

Returns a new dict where each mapping is defined by the given key/value tuples

namespace HH\Lib\Dict;

function from_entries<Tk as arraykey, Tv>(
  Traversable<(Tk, Tv)> $entries,
): 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 values, see Dict\from_values().

Also known as unzip or fromItems in other implementations.

Time complexity: O(n) Space complexity: O(n)

Parameters​

Returns​

  • dict<Tk, Tv>