Clear Static Memoization

:::info[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. :::

Clear memoization data

• if $cls is non-null, clear memoziation cache for $cls::$func, or for all static memoized methods if $func is null
• if $cls is null, clear memoization cache for $func

namespace HH;

function clear_static_memoization(
  ?string $cls,
  ?string $func = NULL,
): bool;

Parameters

• ?string $cls
• ?string $func = NULL

Returns

• bool