hasch.core — org.replikativ/hasch 0.3.97

Hashing functions for EDN.

b64-hash clj/s

(b64-hash val)

Provides a base64 encoded string of the edn-hash of a value val. This contains all bits of the hash compared to 128 bits for the UUID-5. Both should be safe, but b64-hash is safer towards collisions.

edn-hash clj/s

(edn-hash val)

(edn-hash val write-handlers)

(edn-hash val md-create-fn write-handlers)

Hash an edn value with SHA-512 by default or a compatible hash function of choice.

Please use the write-handlers only in legacy cases and rather extend the PHashCoercion protocol to your own types.

hash->str clj/s

hash-ref clj/s

(hash-ref val)

(hash-ref val write-handlers)

(hash-ref val md-create-fn write-handlers)

Create a HashRef from a value. Stores the -coerce output so that when the HashRef appears inside a larger structure, it produces the same hash as the original value — transparent merkle-style structural hashing.

(edn-hash (hash-ref x)) == (edn-hash x) (uuid {:a (hash-ref x)}) == (uuid {:a x})

squuid clj/s

(squuid)

(squuid uuid)

Calculates a sequential UUID as described in https://github.com/clojure-cookbook/clojure-cookbook/blob/master/01_primitive-data/1-24_uuids.asciidoc

uuid clj/s

(uuid)

(uuid val & {:keys [write-handlers]})

Creates random UUID-4 without argument or UUID-5 for the argument value.

Optionally an incognito-style write-handlers map can be supplied, which describes record serialization in terms of Clojure data structures.

uuid4 clj/s

uuid5 clj/s