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darray

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.

namespace HH;

function darray<Tk as arraykey, Tv>(
  KeyedTraversable<Tk, Tv> $arr,
): darray<arraykey, mixed, Tk, Tv>;

Parameters​

Returns​

  • darray<arraykey, mixed, Tk, Tv>