range-list

Introduction

A lib for managing range list.

• range: a pair of integers (other type would initiate errors): such as [2, 6), this range inclouds integers: 2, 3, 4, and 5.
• range list
  • ordered: from samll to large: such as [10, 20) [6, 9) is not right, the right order is [6, 9) [10, 20)
  • not overlapped: such as [2, 10) [5, 20) is not right, the right list is [2, 5) [10, 20)

Development

• developed with typescript.
• use babel to support es6 develop environment.
• use ts-jest to test.
• also support script in package.json to help develop and test.

How to use

• not pulished yet.
• but MIT license makes you feel free to fork.

const rl = new RangeList();
rl.add([1, 5]);
rl.print();
// Should display: [1, 5)
rl.add([10, 20]);
rl.print();
// Should display: [1, 5) [10, 20)
rl.add([20, 20]);
rl.print();
// Should display: [1, 5) [10, 20)
rl.add([20, 21]);
rl.print();
// Should display: [1, 5) [10, 21)
rl.add([2, 4]);
rl.print();
// Should display: [1, 5) [10, 21)
rl.add([3, 8]);
rl.print();
// Should display: [1, 8) [10, 21)
rl.remove([10, 10]);
rl.print();
// Should display: [1, 8) [10, 21)
rl.remove([10, 11]);
rl.print();
// Should display: [1, 8) [11, 21)
rl.remove([15, 17]);
rl.print();
// Should display: [1, 8) [11, 15) [17, 21)
rl.remove([3, 19]);
rl.print();
// Should display: [1, 3) [19, 21)

Works not finished

• form now on, integer is only validated, if users who use pairs of decimal as a range, may initiate unkown error
• not so sure the efficiency of large size of range list refactored
• some code need to be refactored

Thanks

• firstly, thanks to jerry.ai that I got a opportunity to write this project.
• secondly, thanks Jayden Li, that I found a npm package: j-range-list-js published by him witch inspired me from several aspects.