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函数柯里化
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| // 摘自Secrets of the JavaScript Ninja | |
| Function.prototype.partial = function() { | |
| var fn = this, args = Array.prototype.slice.call(arguments); | |
| return function() { | |
| var arg = 0; | |
| for (var i = 0; i < args.length && arg < arguments.length; i++) { | |
| if (args[i] === undefined) { | |
| args[i] = arguments[arg++]; | |
| } | |
| } | |
| return fn.apply(this, args); | |
| }; | |
| }; | |
| var delay = setTimeout.partial(undefined, 10); | |
| delay(function(){ | |
| assert(true, | |
| "A call to this function will be delayed 10 ms."); | |
| }); |
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