If enabled, the hash value for a frozen struct instance will be computed at most once, and then stored on the instance for further reuse. For expensive hash computations this can result in improved performance at the cost of a small amount of memory use.
If enabled, the hash value for a frozen struct instance will be computed at most once, and then stored on the instance for further reuse. For expensive hash computations this can result in improved performance at the cost of a small amount of memory use.
Fixes #591.