Mercurial > laserkard
annotate good-parts/first.js @ 82:da3028a52ac1 laserkard
wrote display_update
author | Robert McIntyre <rlm@mit.edu> |
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date | Sun, 25 Jul 2010 10:14:05 -0400 |
parents | 343dc947f999 |
children |
rev | line source |
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rlm@79 | 1 document.writeln("hello world!"); |
rlm@79 | 2 |
rlm@79 | 3 Function.prototype.method = function (name, func) { |
rlm@79 | 4 this.prototype[name] = func; |
rlm@79 | 5 return this; |
rlm@79 | 6 }; |
rlm@79 | 7 |
rlm@79 | 8 |
rlm@79 | 9 if (typeof Object.create !== 'function') { |
rlm@79 | 10 Object.create = function (o) { |
rlm@79 | 11 var F = function () {}; |
rlm@79 | 12 F.prototype = o; |
rlm@79 | 13 return new F(); |
rlm@79 | 14 };} |
rlm@79 | 15 |
rlm@79 | 16 Number.method('integer', function ( ) { |
rlm@79 | 17 return Math[this < 0 ? 'ceil' : 'floor'](this); |
rlm@79 | 18 }); |
rlm@79 | 19 |
rlm@79 | 20 String.method('trim', function ( ) { |
rlm@79 | 21 return this.replace(/^\s+|\s+$/g, ''); |
rlm@79 | 22 }); |
rlm@79 | 23 |
rlm@79 | 24 |
rlm@79 | 25 document.writeln((-10 / 3).integer( )); |
rlm@79 | 26 |
rlm@79 | 27 document.writeln("whatev ".trim()); |
rlm@79 | 28 document.writeln("whatev "); |
rlm@79 | 29 |
rlm@79 | 30 Function.method('curry', function ( ) { |
rlm@79 | 31 var slice = Array.prototype.slice, |
rlm@79 | 32 args = slice.apply(arguments), |
rlm@79 | 33 that = this; |
rlm@79 | 34 return function ( ) { |
rlm@79 | 35 return that.apply(null, args.concat(slice.apply(arguments))); |
rlm@79 | 36 }; |
rlm@79 | 37 }); |
rlm@79 | 38 |
rlm@79 | 39 var memoizer = function (memo, formula) { |
rlm@79 | 40 var recur = function (n) { |
rlm@79 | 41 var result = memo[n]; |
rlm@79 | 42 if (typeof result !== 'number') { |
rlm@79 | 43 result = formula(recur, n); |
rlm@79 | 44 memo[n] = result; |
rlm@79 | 45 } |
rlm@79 | 46 return result; |
rlm@79 | 47 }; |
rlm@79 | 48 return recur; |
rlm@79 | 49 }; |