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Array.js
179 lines (146 loc) · 3.69 KB
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Array.js
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/*
---
name: Array
description: Contains Array Prototypes like each, contains, and erase.
license: MIT-style license.
requires: Type
provides: Array
...
*/
Array.implement({
/*<!ES5>*/
every: function(fn, bind){
for (var i = 0, l = this.length >>> 0; i < l; i++){
if ((i in this) && !fn.call(bind, this[i], i, this)) return false;
}
return true;
},
filter: function(fn, bind){
var results = [];
for (var value, i = 0, l = this.length >>> 0; i < l; i++) if (i in this){
value = this[i];
if (fn.call(bind, value, i, this)) results.push(value);
}
return results;
},
indexOf: function(item, from){
var length = this.length >>> 0;
for (var i = (from < 0) ? Math.max(0, length + from) : from || 0; i < length; i++){
if (this[i] === item) return i;
}
return -1;
},
map: function(fn, bind){
var length = this.length >>> 0, results = Array(length);
for (var i = 0; i < length; i++){
if (i in this) results[i] = fn.call(bind, this[i], i, this);
}
return results;
},
some: function(fn, bind){
for (var i = 0, l = this.length >>> 0; i < l; i++){
if ((i in this) && fn.call(bind, this[i], i, this)) return true;
}
return false;
},
/*</!ES5>*/
clean: function(){
return this.filter(function(item){
return item != null;
});
},
invoke: function(methodName){
var args = Array.slice(arguments, 1);
return this.map(function(item){
return item[methodName].apply(item, args);
});
},
associate: function(keys){
var obj = {}, length = Math.min(this.length, keys.length);
for (var i = 0; i < length; i++) obj[keys[i]] = this[i];
return obj;
},
link: function(object){
var result = {};
for (var i = 0, l = this.length; i < l; i++){
for (var key in object){
if (object[key](this[i])){
result[key] = this[i];
delete object[key];
break;
}
}
}
return result;
},
contains: function(item, from){
return this.indexOf(item, from) != -1;
},
append: function(array){
this.push.apply(this, array);
return this;
},
getLast: function(){
return (this.length) ? this[this.length - 1] : null;
},
getRandom: function(){
return (this.length) ? this[Number.random(0, this.length - 1)] : null;
},
include: function(item){
if (!this.contains(item)) this.push(item);
return this;
},
combine: function(array){
for (var i = 0, l = array.length; i < l; i++) this.include(array[i]);
return this;
},
erase: function(item){
for (var i = this.length; i--;){
if (this[i] === item) this.splice(i, 1);
}
return this;
},
empty: function(){
this.length = 0;
return this;
},
flatten: function(){
var array = [];
for (var i = 0, l = this.length; i < l; i++){
var type = typeOf(this[i]);
if (type == 'null') continue;
array = array.concat((type == 'array' || type == 'collection' || type == 'arguments' || instanceOf(this[i], Array)) ? Array.flatten(this[i]) : this[i]);
}
return array;
},
pick: function(){
for (var i = 0, l = this.length; i < l; i++){
if (this[i] != null) return this[i];
}
return null;
},
hexToRgb: function(array){
if (this.length != 3) return null;
var rgb = this.map(function(value){
if (value.length == 1) value += value;
return value.toInt(16);
});
return (array) ? rgb : 'rgb(' + rgb + ')';
},
rgbToHex: function(array){
if (this.length < 3) return null;
if (this.length == 4 && this[3] == 0 && !array) return 'transparent';
var hex = [];
for (var i = 0; i < 3; i++){
var bit = (this[i] - 0).toString(16);
hex.push((bit.length == 1) ? '0' + bit : bit);
}
return (array) ? hex : '#' + hex.join('');
}
});
//<1.2compat>
Array.alias('extend', 'append');
var $pick = function(){
return Array.from(arguments).pick();
};
//</1.2compat>