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jsExtends.js
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jsExtends.js
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/*
Copyright © 2011 MLstate
This file is part of OPA.
OPA is free software: you can redistribute it and/or modify it under the
terms of the GNU Affero General Public License, version 3, as published by
the Free Software Foundation.
OPA is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU Affero General Public License for
more details.
You should have received a copy of the GNU Affero General Public License
along with OPA. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* Extensions to JS standard prototypes
*
* @author David Rajchenbach-Teller
*/
/**
* {1 Array}
*/
//The following extracts come from the specification of ECMASCRIPT 262
if (!Array.prototype.map)
{
/**
* This would be the place for the documentation of Array.map
* @param fun
**/
Array.prototype.map = function(fun /*, thisp */)
{
"use strict";
if (this === void 0 || this === null)
throw new TypeError();
var t = Object(this);
var len = t.length >>> 0;
if (typeof fun !== "function")
throw new TypeError();
var res = new Array(len);
var thisp = arguments[1];
for (var i = 0; i < len; i++)
{
if (i in t)
res[i] = fun.call(thisp, t[i], i, t);
}
return res;
};
}
if (!Array.prototype.forEach)
{
/**
* This would be the place for the documentation of Array.forEach
* @param fun
**/
Array.prototype.forEach = function(fun /*, thisp */)
{
"use strict";
if (this === void 0 || this === null)
throw new TypeError();
var t = Object(this);
var len = t.length >>> 0;
if (typeof fun !== "function")
throw new TypeError();
var thisp = arguments[1];
for (var i = 0; i < len; i++)
{
if (i in t)
fun.call(thisp, t[i], i, t);
}
};
}
if (!Array.prototype.reduce)
{
/**
* This would be the place for the documentation of Array.reduce
* @param fun
**/
Array.prototype.reduce = function(fun /*, initialValue */)
{
"use strict";
if (this === void 0 || this === null)
throw new TypeError();
var t = Object(this);
var len = t.length >>> 0;
if (typeof fun !== "function")
throw new TypeError();
// no value to return if no initial value and an empty array
if (len == 0 && arguments.length == 1)
throw new TypeError();
var k = 0;
var accumulator;
if (arguments.length >= 2)
{
accumulator = arguments[1];
}
else
{
do
{
if (k in t)
{
accumulator = t[k++];
break;
}
// if array contains no values, no initial value to return
if (++k >= len)
throw new TypeError();
}
while (true);
}
while (k < len)
{
if (k in t)
accumulator = fun.call(undefined, accumulator, t[k], k, t);
k++;
}
return accumulator;
};
}
//End of extracts
/**
* @param i
* @param b
**/
Array.prototype.append_sub = function(i, b)
{
return this.concat(b.slice(i));
}
/**
* @param i
**/
Array.prototype.sub = function(i)
{
return this.slice(0, i);
}
/**
* @param value
**/
Array.prototype.inArray = function (value)
{
for (var i = 0, l = this.length; i < l; i++)
if (value == this[i]) return true;
return false;
}
/**
* {1 String}
*/
/**
* Remove blank char at left and right.
* @return {String|string} trimed string
**/
String.prototype.trim = function ()
{
var chr = " \t\n\r\v\0", n = this;
while (n.length > 0 && chr.indexOf(n.substr(0, 1)) != -1) n = n.substr(1);
while (n.length > 0 && chr.indexOf(n.substr(-1)) != -1) n = n.substr(0, n.length - 1);
return n;
}