BitField

The BitField package provides the primitives to work with bitfields in Go. This package is very simple and can be used to implement more complex data structures such as bitsets, bloom filters, etc.

The BitField is implemented using uint64 type, so it can hold up to 64 bits for one bitfield. To work with bitfields larger than 64 bits, you can combine multiple BitField as an array to build bigger bitfields.

Installation

go get github.com/josestg/bitfield

Usage

package main

import (
	"fmt"
	"github.com/josestg/bitfield"
)

func main() {
	var f bitfield.BitField
	f = f.SetBit(0).SetBit(1).SetBit(3).SetBit(4)
	fmt.Printf("%08b\n", f)   // 00011011
	fmt.Println(f.IsSet(0))   // true
	fmt.Println(f.IsSet(2))   // false
	fmt.Println(f.IsSet(3))   // true
	fmt.Println(f.Cardinal()) // 4

	g := f.DelBit(3)
	fmt.Println(g.IsSet(3)) // false
}