https://github.com/purehyperbole/bitfield

A basic variable length bit field implementation
https://github.com/purehyperbole/bitfield

Last synced: 8 months ago
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A basic variable length bit field implementation

• Host: GitHub
• URL: https://github.com/purehyperbole/bitfield
• Owner: purehyperbole
• License: mit
• Created: 2021-03-23T16:41:22.000Z (over 5 years ago)
• Default Branch: main
• Last Pushed: 2021-03-23T17:12:30.000Z (over 5 years ago)
• Last Synced: 2025-07-03T19:07:40.699Z (12 months ago)
• Language: Go
• Size: 2.93 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
# bitfield

A basic variable length bit field implementation ported from [this stack overflow answer](https://stackoverflow.com/a/177092)

# Usage

```go

package main

import (

    "fmt"

    "github.com/purehyperbole/bitfield"

)

type Item int

const (

    Eggs Item = iota

    Milk

    Sugar

    Pasta

    Cheese

    Tomatoes

)

func (i Item) String() string {

    return [...]string{"Eggs", "Milk", "Sugar", "Pasta", "Cheese", "Tomatoes"}[i]

}

func main() {

    // creates a bitfield with 128 different possible flags

    shoppingList := bitfield.New(16)

    // set some flags

    shoppingList.Set(Eggs)

    shoppingList.Set(Pasta)

    shoppingList.Set(Cheese)

    for _, item := range []int{Eggs, Milk, Sugar, Pasta, Cheese, Tomatoes} {

        // check if the list has flags

        if shoppingList.Has(item) {

            fmt.Println("need:", item)

        }

    }

}

```