hash() hashes an arbitrary R object.
hash_file() hashes the data contained in a file.
The generated hash is guaranteed to be reproducible across platforms that have the same endianness and are using the same R version.
A character vector of paths to the files to be hashed.
hash(), a single character string containing the hash.
hash_file(), a character vector containing one hash per file.
These hashers use the XXH128 hash algorithm of the xxHash library, which generates a 128-bit hash. Both are implemented as streaming hashes, which generate the hash with minimal extra memory usage.
hash(), objects are converted to binary using R's native serialization
tools. On R >= 3.5.0, serialization version 3 is used, otherwise version 2 is
serialize() for more information about the serialization version.
hash(c(1, 2, 3))#>  "702f7dd6e81ea41d26ea3b248627ece4"hash(mtcars)#>  "d0487363db4e6cc64fdb740cb6617fc0"authors <- file.path(R.home("doc"), "AUTHORS") copying <- file.path(R.home("doc"), "COPYING") hashes <- hash_file(c(authors, copying)) hashes#>  "f3b28e876c66fd190ce66d9be3a2c3a3" "cdb3a24318136e74f38209c219ca104b"# If you need a single hash for multiple files, # hash the result of `hash_file()` hash(hashes)#>  "96c3494aef2ae9d012e2b7428b6259b9"