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functional.js

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functional.js - npm Package Compare versions

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0.1.8-1

24

functional.js
var λ = (function () {
var λ = {};
var sliceArgs = function (args) {
return args.length > 0 ? [].slice.call(args, 0) : [];
};
λ.curry = function (func) {

@@ -9,3 +13,3 @@ if (!func || typeof (func) !== "function") {

return function inner() {
var _args = arguments.length >= 1 ? [].slice.call(arguments, 0) : [];
var _args = sliceArgs(arguments);
if (_args.length === func.length) {

@@ -18,3 +22,3 @@ return func.apply(null, _args);

return function() {
var args = arguments.length >= 1 ? [].slice.call(arguments, 0) : [];
var args = sliceArgs(arguments);
return inner.apply(null, _args.concat(args));

@@ -96,3 +100,3 @@ };

});
funcs = arguments.length >= 1 ? [].slice.call(arguments, 0) : [];
funcs = sliceArgs(arguments);
if (hasInvalid(funcs)) {

@@ -111,2 +115,16 @@ throw "λ Error: Invalid function to compose";

λ.partition = λ.curry(function (iterator, items) {
var truthy = [],
falsy = [],
partitionEach;
if (typeof (iterator) !== "function") {
throw "λ Error: Invalid function";
}
partitionEach = λ.each(function (item) {
(iterator.call(null, item) ? truthy : falsy).push(item);
});
partitionEach(items);
return [truthy, falsy];
});
return λ;

@@ -113,0 +131,0 @@ })();

4

functional.min.js
/*!
functional.js (v0.1.7) 14-08-2013
functional.js (v0.1.8) 23-08-2013
(c) Lee Crossley <leee@hotmail.co.uk> (http://ilee.co.uk/)
*/
var λ=function(){var a={};return a.curry=function(b){if(!b||"function"!=typeof b)throw"λ Error: No function to curry";return function c(){var d=arguments.length>=1?[].slice.call(arguments,0):[];if(d.length===b.length)return b.apply(null,d);if(d.length>b.length){var e=b.apply(null,d);return a.reduce(b,e,d.slice(b.length))}return function(){var a=arguments.length>=1?[].slice.call(arguments,0):[];return c.apply(null,d.concat(a))}}},a.each=a.curry(function(a,b){if(b&&"function"==typeof a)for(var c=0;c<b.length;c++)a(b[c])}),a.map=a.curry(function(b,c){var d,e=[];if(c&&"function"==typeof b)return d=a.each(function(){e.push(b.apply(null,arguments))}),d(c),e}),a.reduce=a.reducel=a.curry(function(b,c,d){var e,f=c;if(d&&"function"==typeof b)return e=a.each(function(a){f=b.call(null,f,a)}),e(d),f}),a.any=a.curry(function(b,c){var d,e=!1;if("function"!=typeof b)throw"λ Error: Invalid function";return d=a.each(function(a){return b.call(null,a)?(e=!0,void 0):void 0}),d(c),e}),a.select=a.curry(function(b,c){var d,e=[];if("function"!=typeof b)throw"λ Error: Invalid function";return d=a.each(function(a){b.call(null,a)&&e.push(a)}),d(c),e}),a.compose=function(b){var c=a.any(function(a){return"function"!=typeof a});if(b=arguments.length>=1?[].slice.call(arguments,0):[],c(b))throw"λ Error: Invalid function to compose";return function(){var c=arguments,d=a.each(function(a){c=[a.apply(null,c)]});return d(b.reverse()),c[0]}},a}();"undefined"!=typeof exports&&("undefined"!=typeof module&&module.exports&&(exports=module.exports=λ),exports.λ=λ);
var λ=function(){var a={},b=function(a){return a.length>0?[].slice.call(a,0):[]};return a.curry=function(c){if(!c||"function"!=typeof c)throw"λ Error: No function to curry";return function d(){var e=b(arguments);if(e.length===c.length)return c.apply(null,e);if(e.length>c.length){var f=c.apply(null,e);return a.reduce(c,f,e.slice(c.length))}return function(){var a=b(arguments);return d.apply(null,e.concat(a))}}},a.each=a.curry(function(a,b){if(b&&"function"==typeof a)for(var c=0;c<b.length;c++)a(b[c])}),a.map=a.curry(function(b,c){var d,e=[];if(c&&"function"==typeof b)return d=a.each(function(){e.push(b.apply(null,arguments))}),d(c),e}),a.reduce=a.reducel=a.curry(function(b,c,d){var e,f=c;if(d&&"function"==typeof b)return e=a.each(function(a){f=b.call(null,f,a)}),e(d),f}),a.any=a.curry(function(b,c){var d,e=!1;if("function"!=typeof b)throw"λ Error: Invalid function";return d=a.each(function(a){return b.call(null,a)?(e=!0,void 0):void 0}),d(c),e}),a.select=a.curry(function(b,c){var d,e=[];if("function"!=typeof b)throw"λ Error: Invalid function";return d=a.each(function(a){b.call(null,a)&&e.push(a)}),d(c),e}),a.compose=function(c){var d=a.any(function(a){return"function"!=typeof a});if(c=b(arguments),d(c))throw"λ Error: Invalid function to compose";return function(){var b=arguments,d=a.each(function(a){b=[a.apply(null,b)]});return d(c.reverse()),b[0]}},a.partition=a.curry(function(b,c){var d,e=[],f=[];if("function"!=typeof b)throw"λ Error: Invalid function";return d=a.each(function(a){(b.call(null,a)?e:f).push(a)}),d(c),[e,f]}),a}();"undefined"!=typeof exports&&("undefined"!=typeof module&&module.exports&&(exports=module.exports=λ),exports.λ=λ);

@@ -5,3 +5,4 @@ {

"description": "functional.js is (go on, guess) a functional js library. It facilitates currying and point-free / tacit programming in JavaScript. Minified version here: http://bit.ly/funcmin",
"version": "0.1.7",
"homepage": "http://ilee.co.uk",
"version": "0.1.8-1",
"main": "functional.min.js",

@@ -8,0 +9,0 @@ "keywords": [

@@ -5,4 +5,23 @@ # functional.js (λ) [![Build Status](https://travis-ci.org/leecrossley/functional-js.png?branch=master)](https://travis-ci.org/leecrossley/functional-js) [![devDependency Status](https://david-dm.org/leecrossley/functional-js/dev-status.png)](https://david-dm.org/leecrossley/functional-js#info=devDependencies)

Grab the minified version [here](http://bit.ly/funcmin).
## Getting started
### Using npm
```
npm install functional.js
```
To then include functional.min.js in your app:
```
var λ = require("functional.js");
```
### Direct dependency
Download the minified version [here](http://bit.ly/funcmin), reference the js file and λ will become a global variable.
## Examples
### Basic λ.curry example

@@ -149,2 +168,18 @@

expect(composed(2)).toEqual("hello 201");
```
### Curried λ.partition example
```javascript
var items = [7, 6, 5, 4, 3, 2, 1];
var even = function (item) {
return item % 2 === 0;
};
var partitionEven = λ.partition(even);
var result = partitionEven(items);
expect(result).toEqual([[6, 4, 2], [7, 5, 3, 1]]);
```

@@ -220,2 +220,28 @@ describe("functional", function() {

it("should be able to λ.partition an array of odd and even numbers", function() {
var items = [1, 2, 3, 4, 5, 6, 7];
var even = function (item) {
return item % 2 === 0;
};
var result = λ.partition(even, items);
expect(result).toEqual([[2, 4, 6], [1, 3, 5, 7]]);
});
it("should be able to λ.curry λ.partition", function() {
var items = [7, 6, 5, 4, 3, 2, 1];
var even = function (item) {
return item % 2 === 0;
};
var partitionEven = λ.partition(even);
var result = partitionEven(items);
expect(result).toEqual([[6, 4, 2], [7, 5, 3, 1]]);
});
});