hash

package

v0.0.0-...-9d3c4bc Latest Latest Go to latest Published: Nov 1, 2019 License: Apache-2.0 Imports: 6 Imported by: 0

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Repository

github.com/grailbio/gql

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Documentation ¶

Overview ¶

Package hash provides functions for computing a hash of vql values and AST nodes. Hash is ultimately used as an UID of a Table, so that it can be cached and reused across computations.

Constants ¶

This section is empty.

Variables ¶

View Source

var (
	// Zero is an all-zero hash value.
	Zero = Hash{}
)

Functions ¶

This section is empty.

Types ¶

type Hash ¶

type Hash [hashBytes]byte

Hash uniquely identifies a Value or an AST node.

func Bool ¶

func Bool(b bool) Hash

Bool hashes a boolean value.

func Bytes ¶

func Bytes(data []byte) Hash

Bytes hashes a byte array.

func Float ¶

func Float(v float64) Hash

Float hashes an float64 value.

func Int ¶

func Int(v int64) Hash

Int hashes an int64 value.

func String ¶

func String(s string) Hash

String hashes a string.

func Time ¶

func Time(t time.Time) Hash

Time hashes a time.Time value.

func (Hash) Add ¶

func (h Hash) Add(h2 Hash) Hash

Add merges two hash values commutatively.

∀ h, ∀ h2: h.Add(h2) == h2.Add(h)

func (Hash) Merge ¶

func (h Hash) Merge(h2 Hash) Hash

Merge combines the two hashes. This function is not commutative or distributive.

func (Hash) String ¶

func (h Hash) String() string

String returns a human-readable description.

Source Files ¶

View all Source files

hash.go

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