Package Exports

int-range

This package does not declare an exports field, so the exports above have been automatically detected and optimized by JSPM instead. If any package subpath is missing, it is recommended to post an issue to the original package (int-range) to support the "exports" field. If that is not possible, create a JSPM override to customize the exports field for this package.

Readme

int-range

创建整数范围（IntRange），实现 IntRange 之间的加法、减法、交集、切割；判断 IntRange 之间是否存在相交（isIntersect）、包含（isContains）关系。

Install:

npm i int-range

Demo:

const {IntRange, range, rangeAdd, rangeSub, rangeIntersect, rangeCut} = require('int-range');

let range1 = new IntRange(0,10);
console.log(`range1 : ${range1.toString()}`);

let range2 = range(8,12);
console.log(`range2 : ${range2.toString()}`);
console.log(`range2 to Array : ${range2.toArray()}`);


console.log(`range1 contains range2 : ${range1.isContains(range2)}`);
console.log(`range1 intersect range2 : ${range1.isIntersect(range2)}`);

// add
console.log(`range1 + range2 : ${rangeAdd(range1, range2)}`);
let range3 = range(20,30);
console.log(`range1 + range2 + range3 : ${rangeAdd(range1, range2, range3)}`);

// subtract
console.log(`range1 - range2 : ${rangeSub(range1, range2)}`);
console.log(`range2 - range1 : ${rangeSub(range2, range1)}`);

// intersect
console.log(`range1 ∩ range2 : ${rangeIntersect(range1, range2)}`);

// cut
console.log(`range1 cut range2 : ${rangeCut(range1, range2)}`);

Output:

range1 : {min:0, max:9, length:10}
range2 : {min:8, max:12, length:5}
range2 to Array : 8,9,10,11,12
range1 contains range2 : false
range1 intersect range2 : true
range1 + range2 : {min:0, max:12, length:13}
range1 + range2 + range3 : {min:0, max:12, length:13},{min:20, max:30, length:11}
range1 - range2 : {min:0, max:7, length:8}
range2 - range1 : {min:10, max:12, length:3}
range1 ∩ range2 : {min:8, max:9, length:2}
range1 cut range2 : {min:0, max:7, length:8},{min:8, max:9, length:2},{min:10, max:12, length:3}

Update:

版本	更新内容
1.3.3	1、修复 `Range.begin` 赋值异常的 BUG 2、优化项目结构，增加单元测试
1.3.2	修复 `rangeSub(range(0))` 结果异常的 BUG
1.3.1	优化 `range()` 方法，可以返回 `length=0` 的 `IntRange` 实例。例如： `range(2)` 等价于 `new IntRange(2,0)`
1.3.0	1、支持 `IntRange.length = 0` 2、新增方法：`IntRange.toRaw()` 3、优化算法
1.2.0	新增方法：`[静态] IntRange.create()`、`[静态] IntRange.release()`、`IntRange.equal()`