| /tags/1.0.9/lib/collections/arrays/arrays.js |
|---|
| @@ -0,0 +1,145 @@ |
|---|
| /*************************************************************************/ |
| /* Copyright (C) 2017 Wizardry and Steamworks - License: GNU GPLv3 */ |
| /*************************************************************************/ |
| function wasArrayToObject(a) { |
| var o = {}; |
| a.reduce(function(a, c, i) { |
| i = Math.floor(i / 2); |
| if (!a[i]) { |
| a[i] = []; |
| } |
| a[i].push(c); |
| return a; |
| }, []).forEach(function(c, i, a) { |
| o[c[0]] = c[1]; |
| }, o); |
| return o; |
| } |
| if (!Array.prototype.toObject) { |
| Array.prototype.toObject = function() { |
| return wasArrayToObject(this); |
| }; |
| } |
| // jQuery |
| if(typeof jQuery === 'function') { |
| $.extend({ |
| toObject: wasArrayToObject |
| }); |
| } |
| |
| |
| /*************************************************************************/ |
| /* Copyright (C) 2017 Wizardry and Steamworks - License: GNU GPLv3 */ |
| /*************************************************************************/ |
| function wasProduct(a, b) { |
| var m = Math.max(a.length, b.length); |
| var o = {}; |
| for(var i = 0; i < m; ++i) { |
| o[a[i]] = b[i]; |
| } |
| return o; |
| } |
| if (!Array.prototype.product) { |
| Array.prototype.product = function(b) { |
| return wasProduct(this, b); |
| }; |
| } |
| // jQuery |
| if(typeof jQuery === 'function') { |
| $.extend({ |
| product: wasProduct |
| }); |
| } |
| |
| /*************************************************************************/ |
| /* Copyright (C) 2017 Wizardry and Steamworks - License: GNU GPLv3 */ |
| /*************************************************************************/ |
| function wasStride(a, s) { |
| return a.filter(function(e, i) { |
| return i % s === 0; |
| }); |
| } |
| if (!Array.prototype.stride) { |
| Array.prototype.stride = function(s) { |
| return wasStride(this, s); |
| }; |
| } |
| // jQuery |
| if(typeof jQuery === 'function') { |
| $.extend({ |
| stride: wasStride |
| }); |
| } |
| |
| // Vanilla JavaScript |
| function wasChunk(a, n) { |
| return Array.from(new Array(Math.ceil(a.length/n)), (_,i)=>a.slice(i*n,i*n+n)); |
| } |
| if (!Array.prototype.chunk) { |
| Array.prototype.chunk = function(a, n) { |
| return wasChunk(this, n); |
| }; |
| } |
| // jQuery |
| if(typeof jQuery === 'function') { |
| $.extend({ |
| chunk: wasChunk |
| }); |
| } |
| |
| /*************************************************************************/ |
| /* Copyright (C) 2017 Wizardry and Steamworks - License: GNU GPLv3 */ |
| /*************************************************************************/ |
| /*stackoverflow.com/questions/7837456/how-to-compare-arrays-in-javascript*/ |
| /*************************************************************************/ |
| // Vanilla JavaScript |
| function wasEquals(a, b) { |
| // if the other array is a falsy value, return |
| if (!b) { |
| return false; |
| } |
| |
| // compare lengths - can save a lot of time |
| if (a.length !== b.length) { |
| return false; |
| } |
| |
| for (var i = 0, l = a.length; i < l; i++) { |
| // Check if we have nested arrays |
| if (a[i] instanceof Array && b[i] instanceof Array) { |
| // recurse into the nested arrays |
| if (!a[i].equals(b[i])) { |
| return false; |
| } |
| } else if (a[i] !== b[i]) { |
| // Warning - two different object instances will never be equal: {x:20} != {x:20} |
| return false; |
| } |
| } |
| return true; |
| } |
| if (!Array.prototype.equals) { |
| // attach the .equals method to Array's prototype to call it on any array |
| Array.prototype.equals = function(a, b) { |
| return wasEquals(this, b); |
| }; |
| } |
| // jQuery |
| if(typeof jQuery === 'function') { |
| $.extend({ |
| equals: wasEquals |
| }); |
| } |
| |
| /*************************************************************************/ |
| /* Node.JS package export. */ |
| /*************************************************************************/ |
| if(typeof module !== 'undefined' && typeof module.exports !== 'undefined') { |
| module.exports.collections = { |
| product: wasProduct, |
| stride: wasStride, |
| chunk: wasChunk, |
| equals: wasEquals, |
| toObject: wasArrayToObject |
| }; |
| } |
