https://github.com/bttmly/whirl

Curried, object-accepting, data-last versions of map, each, filter and reduce.
https://github.com/bttmly/whirl

Last synced: 3 months ago
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Curried, object-accepting, data-last versions of map, each, filter and reduce.

• Host: GitHub
• URL: https://github.com/bttmly/whirl
• Owner: bttmly
• Created: 2014-11-12T03:45:49.000Z (over 10 years ago)
• Default Branch: master
• Last Pushed: 2014-11-19T02:55:24.000Z (over 10 years ago)
• Last Synced: 2024-04-26T06:03:01.049Z (about 1 year ago)
• Language: CoffeeScript
• Homepage:
• Size: 203 KB
• Stars: 2
• Watchers: 4
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# whirl [![Build Status](https://travis-ci.org/nickb1080/whirl.svg?branch=master)](https://travis-ci.org/nickb1080/whirl)

Curried, object-accepting, data-last versions of `map`, `each`, `filter` and `reduce`. Just pieces of [fast.js](https://github.com/codemix/fast.js) with [curry](https://github.com/dominictarr/curry).

### Methods

#### `map(Function callback, Object | Array data) => Array | Object`

`map()` invokes an operation once on each itm in a collection, and collects the return values in a collection of the same type (i.e. mapping an array produces an array, likewise for objects).

**Array**

`callback(Any value, Number index)`

**Object**

`callback(Any value, String key)`

#### `each(Function callback, Object | Array data) => Array | Object`

`each()` invokes an operation once on each item in a collection and returns `undefined`.

**Array**

`callback(Any value, Number index)`

**Object**

`callback(Any value, String key)`

#### `filter(Function callback, Object | Array data) => Array | Object`

`filter()` invokes an operation on each item in a collection, collecting the items (not return values) for which the operation returns a truthy value. Results are of same type as input.

**Array**

`callback(Any value, Number index)`

**Object**

`callback(Any value, String key)`

#### `reduce(Function callback, Any initial, Object | Array data) => Any`

`reduce()` invokes an operation on each item in a collection, with the first argument being the `accumulator`, which is set to the result of the operation, and passed to the next invocation. Results are of a type determined by the operation.

**Array**

`callback(Any current, Any value, Number index)`

**Object**

`callback(Any current, Any value, String key)`