hash arbitrary string to integer

The digest2int function calculates integer hash of an arbitrary string. This is useful for randomized experiments, feature hashing, etc.

digest2int(x, seed = 0L)

Arguments

x

An arbitrary character vector.

seed

an integer for algorithm initial state. Function will produce different hashes for same input and different seed values.

Value

The digest2int function returns integer vector of the same length as input vector x.

References

Jenkins's one_at_a_time hash: https://en.wikipedia.org/wiki/Jenkins_hash_function#one_at_a_time.

Author

Dmitriy Selivanov selivanov.dmitriy@gmail.com for the R interface; Bob Jenkins for original implementation http://www.burtleburtle.net/bob/hash/doobs.html

See also

digest

Examples

current <- digest2int("The quick brown fox jumps over the lazy dog", 0L)
target <- 1369346549L
stopifnot(identical(target, current))