sparsebitvector

This library provides a SparseBitVector implementation in go based on the similarly named class provided by LLVM.

See:

• Documentation on GoDoc
• LLVM's SparseBitVector

Usage

go get github.com/neilisaac/sparsebitvector

import "github.com/neilisaac/sparsebitvector"

vec := sparsebitvector.New(1, 2, 1000000)

vec.Set(1000001)
vec.Unset(1)

vec.IntersectWith(sparsebitvector.New(1, 1000001))

for value := range vec.Iterate() {
    fmt.Println("vec contains", value)
}

Supported operations

• Set set a bit to true
• Unset set a bit to false (called reset in LLVM)
• Test check whether a bit is true
• TestAndSet set a bit to true and return true if it was changed
• Clear set all bits to false
• Iterate returns a channel that publishes all true bits
• Equals compare to another SparseBitVector
• Contains returns true if another SparseBitVector's bits are all true
• UnionAndIntersectionSize return the size of the union and intersection with another SparseBitVector
• UnionSize
• IntersectionSize
• UnionWith union itself with another SparseBitVector
• IntersectWith intersect itself with another SparseBitVector
• IntersectWithComplement intersect itself with the bitwise inverse of another SparseBitVector

TODO

• Union returning a new bit vector
• Intersection returning a new bit vector
• Intersects returning true if any bit is present in the intersection