memo: Memoize a function.
In crowding/memo: In-Memory Caching of Repeated Computations (Memoization)

memo	R Documentation

Memoize a function.

Memoize a function.

memo(fn, cache = lru_cache(5000), key = hybrid_key, ...)

`fn`	A function to wrap. It should be a pure function (i.e. it should not cause side effects, and should not depend on any variables that may change.) It should not be a nonstandard-evaluating function. All arguments will be forced by the wrapper.
`cache`	A cache to use. Defaults to a new instance of `lru_cache`. Caches may be shared between memoized functions.
`key`	A hashing strategy. The default "`hybrid_key`" first checks for pointer equivalence and then falls back to using a hash of the arguments. 'pointer_key' uses just pointer equivalence, and 'digest_key' always performs a hash.
`...`	Further arguments passed on to key.