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bit-marker

v1.0.1

Published

二进制位标记处理,无位数限制

Readme

功能

使用二进制位来标记 bool 状态,位数可无限扩展,因为标记位的可扩展性,你需要通过一个数组而不是整数来初始化 BitMarker。 数组中的每个元素可以表示 32 个 bool 状态,当标记数超过 32 时,会自动扩展。

用法

安装

npm install bit-marker

示例

import BitMarker from 'bit-marker';

// 有新功能上线时,出现功能引导,每个功能仅出现一次,使用 BitMarker 对出现过的引导状态进行标记

enum FunctionGuide {
    A = 0, // 功能 A
    B = 1, // 功能 B
    C = 2,
    D = 3,
}

// 1. 初始化
const initStatus = []; // 初始标记,从数据库读出或者初始化
const bitMarker = new BitMarker(initStatus);

// 2. 设置标记
// 功能 A 已引导
bitMarker.set(FunctionGuide.A, true);

// 3. 获取标记
const isGuideA = bitMarker.get(FunctionGuide.A);
console.log(isGuideA); // true
const isGuideB = bitMarker.get(FunctionGuide.B);
console.log(isGuideB); // false

API

constructor(initStatus: number[])

初始化,initStatus 为初始标记,从数据库读出或者初始化

set(bit: number, value: boolean)

设置标记,bit 为标记位,value 为标记值,true 为已标记,false 为未标记。

get(bit: number)

获取标记,bit 为标记位

setValues(values: number[])

接收一个整数数组,每个元素有效值为 [0, 2 ^ 32 - 1],每个数字表示 32 个标记位,当标记数超过 32 时,会自动扩展。

getValues()

获取所有标记组成的数组。

clear()

清空所有标记

欢迎反馈

  1. 提交 issue
  2. 提 PR

作者

牛书书 Github