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86 lines
2.7 KiB
86 lines
2.7 KiB
4 years ago
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## Stable
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A stable array sort, because `Array#sort()` is not guaranteed stable.
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MIT licensed.
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[](http://travis-ci.org/Two-Screen/stable)
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[](http://ci.testling.com/Two-Screen/stable)
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#### From npm
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Install with:
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```sh
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npm install stable
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```
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Then use it in Node.js or some other CommonJS environment as:
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```js
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const stable = require('stable')
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```
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#### From the browser
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Include [`stable.js`] or the minified version [`stable.min.js`]
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in your page, then call `stable()`.
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[`stable.js`]: https://raw.github.com/Two-Screen/stable/master/stable.js
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[`stable.min.js`]: https://raw.github.com/Two-Screen/stable/master/stable.min.js
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#### Usage
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The default sort is, as with `Array#sort`, lexicographical:
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```js
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stable(['foo', 'bar', 'baz']) // => ['bar', 'baz', 'foo']
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stable([10, 1, 5]) // => [1, 10, 5]
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```
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Unlike `Array#sort`, the default sort is **NOT** in-place. To do an in-place
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sort, use `stable.inplace`, which otherwise works the same:
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```js
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const arr = [10, 1, 5]
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stable(arr) === arr // => false
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stable.inplace(arr) === arr // => true
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```
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A comparator function can be specified:
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```js
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// Regular sort() compatible comparator, that returns a number.
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// This demonstrates the default behavior.
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const lexCmp = (a, b) => String(a).localeCompare(b)
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stable(['foo', 'bar', 'baz'], lexCmp) // => ['bar', 'baz', 'foo']
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// Boolean comparator. Sorts `b` before `a` if true.
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// This demonstrates a simple way to sort numerically.
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const greaterThan = (a, b) => a > b
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stable([10, 1, 5], greaterThan) // => [1, 5, 10]
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```
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#### License
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Copyright (C) 2018 Angry Bytes and contributors.
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Permission is hereby granted, free of charge, to any person obtaining a copy of
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this software and associated documentation files (the "Software"), to deal in
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the Software without restriction, including without limitation the rights to
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use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
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of the Software, and to permit persons to whom the Software is furnished to do
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so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included in all
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copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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SOFTWARE.
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