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comparison good-parts/first.js @ 79:343dc947f999 laserkard

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read JavaSctipt: the good parts
author Robert McIntyre <rlm@mit.edu>
date Sun, 25 Jul 2010 01:33:22 -0400
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78:4ebd94bfecda 79:343dc947f999
1 document.writeln("hello world!");
2
3 Function.prototype.method = function (name, func) {
4 this.prototype[name] = func;
5 return this;
6 };
7
8
9 if (typeof Object.create !== 'function') {
10 Object.create = function (o) {
11 var F = function () {};
12 F.prototype = o;
13 return new F();
14 };}
15
16 Number.method('integer', function ( ) {
17 return Math[this < 0 ? 'ceil' : 'floor'](this);
18 });
19
20 String.method('trim', function ( ) {
21 return this.replace(/^\s+|\s+$/g, '');
22 });
23
24
25 document.writeln((-10 / 3).integer( ));
26
27 document.writeln("whatev ".trim());
28 document.writeln("whatev ");
29
30 Function.method('curry', function ( ) {
31 var slice = Array.prototype.slice,
32 args = slice.apply(arguments),
33 that = this;
34 return function ( ) {
35 return that.apply(null, args.concat(slice.apply(arguments)));
36 };
37 });
38
39 var memoizer = function (memo, formula) {
40 var recur = function (n) {
41 var result = memo[n];
42 if (typeof result !== 'number') {
43 result = formula(recur, n);
44 memo[n] = result;
45 }
46 return result;
47 };
48 return recur;
49 };