tupelo.iuid
Given a user-selected number of bits (currently [4..128]), creates a reversible mapping from integer index to a Unique ID (UID). Both the index and the UID are in the range of [0..N), where N = 2^num-bits.
Given a user-selected number of bits (currently [4..128]), creates a reversible mapping from integer index to a Unique ID (UID). Both the index and the UID are in the range of [0..N), where N = 2^num-bits.
idx->uidclj
(idx->uid ctx ival)Inputs: [ctx :- tsk/KeyMap ival :- s/Int] Returns: BigInteger
Given a context map and an index value [0..2^N), returns the corresponding
UID value (Unique ID), also in [0..2^N). UID values are guaranteed
to be unique for each index and pseudo-random within the interval [0..2^N).
The context map specifies N as the value of the :num-bits key.
Inputs: [ctx :- tsk/KeyMap ival :- s/Int] Returns: BigInteger Given a context map and an index value [0..2^N), returns the corresponding UID value (Unique ID), also in [0..2^N). UID values are guaranteed to be unique for each index and pseudo-random within the interval [0..2^N). The context map specifies N as the value of the `:num-bits` key.
new-ctxclj
(new-ctx opts)Inputs: [opts :- tsk/KeyMap] Returns: tsk/KeyMap
Creates a new Indexed Unique ID (IUID) context map. Usage:
(new-ctx <params-map>)
where <params-map> is of the form:
{:num-bits <long> ; REQUIRED: input/output integers in range [0..2^n) (min=4 max=128):
:rand-seed <long> ; optional: PRNG seed (default: randomized)
:num-rounds <long> ; optional: positive int (default: 7)
}
Inputs: [opts :- tsk/KeyMap]
Returns: tsk/KeyMap
Creates a new Indexed Unique ID (IUID) context map. Usage:
(new-ctx <params-map>)
where <params-map> is of the form:
{:num-bits <long> ; REQUIRED: input/output integers in range [0..2^n) (min=4 max=128):
:rand-seed <long> ; optional: PRNG seed (default: randomized)
:num-rounds <long> ; optional: positive int (default: 7)
} uid->idxclj
(uid->idx ctx uid)Inputs: [ctx :- tsk/KeyMap uid :- s/Int] Returns: BigInteger
Given a context map and a UID value (Unique ID) in [0..2^N),
returns the corresponding index value, also in [0..2^N).
The context map specifies N as the value of the :num-bits key.
Inputs: [ctx :- tsk/KeyMap uid :- s/Int] Returns: BigInteger Given a context map and a UID value (Unique ID) in [0..2^N), returns the corresponding index value, also in [0..2^N). The context map specifies N as the value of the `:num-bits` key.
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