/trunk/lib/collections/arrays/arrays.js |
@@ -1,63 +1,69 @@ |
/*************************************************************************/ |
/* Copyright (C) 2017 Wizardry and Steamworks - License: GNU GPLv3 */ |
/*************************************************************************/ |
function wasProduct(b) { |
if (!Array.prototype.product) { |
Array.prototype.product = function(b) { |
var a = this; |
var m = Math.max(this.length, a.length); |
return $.map( |
new Array(Math.max(this.length, a.length)), |
function(e, i) { |
var o = {}; |
for(var i = 0; i < m; ++i) { |
o[a[i]] = b[i]; |
} |
return o; |
}); |
}; |
} |
if (!Array.prototype.product) { |
Array.prototype.product = wasProduct; |
} |
// jQuery |
if(typeof jQuery === 'function') { |
$.extend({ |
product: wasProduct |
product: function(a, b) { |
return $.map( |
new Array(Math.max(this.length, a.length)), |
function(e, i) { |
var o = {}; |
o[a[i]] = b[i]; |
return o; |
}); |
} |
}); |
|
/*************************************************************************/ |
/* Copyright (C) 2017 Wizardry and Steamworks - License: GNU GPLv3 */ |
/*************************************************************************/ |
function wasStride(s) { |
if (!Array.prototype.stride) { |
Array.prototype.stride = function(s) { |
return this.filter(function(e, i) { |
return i % s === 0; |
}); |
}; |
} |
if (!Array.prototype.stride) { |
Array.prototype.stride = wasStride; |
} |
// jQuery |
if(typeof jQuery === 'function') { |
$.extend({ |
stride: wasStride |
stride: function(a, s) { |
return a.filter(function(e, i) { |
return i % s === 0; |
}); |
} |
}); |
|
/*************************************************************************/ |
/* Copyright (C) 2017 Wizardry and Steamworks - License: GNU GPLv3 */ |
/*************************************************************************/ |
// Vanilla JavaScript |
function wasChunk(n) { |
if (!Array.prototype.chunk) { |
Array.prototype.chunk = function(n) { |
if (!this.length) { |
return []; |
} |
return [this.slice(0, n)] |
.concat(this.slice(n).wasChunk(n)); |
.concat(this.slice(n).chunk(n)); |
}; |
} |
if (!Array.prototype.chunk) { |
Array.prototype.chunk = wasChunk; |
$.extend({ |
chunk: function(a, n) { |
if (!a.length) { |
return []; |
} |
// jQuery |
if(typeof jQuery === 'function') { |
$.extend({ |
chunk: wasChunk |
return [a.slice(0, n)] |
.concat(a.slice(n).chunk(n)); |
} |
}); |
} |
|
/*************************************************************************/ |
/* Copyright (C) 2017 Wizardry and Steamworks - License: GNU GPLv3 */ |
@@ -64,8 +70,9 @@ |
/*************************************************************************/ |
/*stackoverflow.com/questions/7837456/how-to-compare-arrays-in-javascript*/ |
/*************************************************************************/ |
// Vanilla JavaScript |
function wasEquals(a) { |
if (!Array.prototype.equals) { |
// attach the .equals method to Array's prototype to call it on any array |
Array.prototype.equals = function(a) { |
// if the other array is a falsy value, return |
if (!a) { |
return false; |
@@ -89,24 +96,33 @@ |
} |
} |
return true; |
}; |
} |
if (!Array.prototype.equals) { |
// attach the .equals method to Array's prototype to call it on any array |
Array.prototype.equals = wasEquals; |
} |
// jQuery |
if(typeof jQuery === 'function') { |
|
$.extend({ |
equals: wasEquals |
}); |
equals: function(a) { |
// if the other array is a falsy value, return |
if (!a) { |
return false; |
} |
|
/*************************************************************************/ |
/* Node.JS package export. */ |
/*************************************************************************/ |
module.exports.collections.arrays = { |
stride: wasProduct, |
stride: wasStride, |
chunk: wasChunk, |
equals: wasEquals |
}; |
// compare lengths - can save a lot of time |
if (this.length !== a.length) { |
return false; |
} |
|
for (var i = 0, l = this.length; i < l; i++) { |
// Check if we have nested arrays |
if (this[i] instanceof Array && a[i] instanceof Array) { |
// recurse into the nested arrays |
if (!this[i].equals(a[i])) { |
return false; |
} |
} else if (this[i] !== a[i]) { |
// Warning - two different object instances will never be equal: {x:20} != {x:20} |
return false; |
} |
} |
return true; |
} |
}); |