trigram

package

v1.0.0 Latest Latest Go to latest Published: Oct 3, 2017 License: GPL-3.0 Imports: 4 Imported by: 1

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Package trigram is a simple trigram index.

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type Index map[T][]uint32

Index is a trigram index.

func NewIndex() Index

NewIndex returns a new trigram index.

func (idx Index) Add(id uint32, s string)

Add adds a string under the given ID.

func (idx Index) AddTrigrams(id uint32, tt []T)

AddTrigrams adds a slice of trigrams under the given ID.

func (idx Index) Query(s string) []uint32

Query returns a slice of IDs that match the trigrams in the query s.

func (idx Index) QueryTrigrams(tt []T) []uint32

QueryTrigrams returns a slice of IDs that match the given set of trigrams.

type T uint32

T is a trigram.

func Extract(s string) []T

Extract returns a slice of all the unique trigrams in s.