hash.functionCall: Hash

In memofunc: Function Memoization

Description

Hashes a function call, taking into account the values provided to the function call and unprovided default values. Ensures the order the parameters are provided does not change the outcome of the hash calculation.

Usage

## S3 method for class 'functionCall'
hash(value)

Arguments

value

value to hash

Value

hashed value as a string

Examples

my.function <- function (x, y) x+y

# a list of values to hash
values <- list(
  "Hello world!",
  101,
  3.142,
  TRUE,
  my.function,
  (function (x, y) x+y),
  functionCall(my.function, call("my.function", 10, 10)),
  list(a=1, b=2, c="hello")
)

# hash the values in the list
(hashes <- lapply(values, hash))

# Note that functions with the same body will have the same hash
hashes[[5]] == hashes[[6]]

memofunc documentation built on Feb. 23, 2021, 1:06 a.m.