Test whether a memoised function has been cached for particular arguments.

Test whether a memoised function has been cached for particular arguments.

has_cache(f)

Arguments

f

Function to test.

Value

A function, with the same arguments as f, that can be called to test if f has cached results.

See also

is.memoised, memoise, drop_cache

Examples

mem_sum <- memoise(sum)
has_cache(mem_sum)(1, 2, 3) # FALSE
#> [1] FALSE
mem_sum(1, 2, 3)
#> [1] 6
has_cache(mem_sum)(1, 2, 3) # TRUE
#> [1] TRUE