array.toSource() 学习遗传算法中的奇怪数据

发布于 2024-10-19 23:21:01 字数 887 浏览 4 评论 0 原文

我刚刚开始学习遗传算法，我本质上是在写本教程 http://lethain.com/entry/2009/jan/02/genic-algorithms-cool-name-damn-simple/ 到 JavaScript。有一些更改可以更好地代表我的数据集。

不管怎样，当我通过 newPop.toSource() 输出时，我发现

[[#1=[[30,22],#2=[30,85],#3=[30,76]...]]],[#1#,#2#,#3#...#15]]]

我从来没有见过我的 .toSource 输出看起来像这样，我期待的只是一个里面有两个数组的数组

我的代码是

var newPop=populate(data,population,0,70);

function individual(population, min, max){
   var newIndivids=[];
   for(s in population){
      newIndivids.push(population[s]);
     newIndivids[s][0]+=rand;
   }
   return newIndivids;

}

function populate(count,population,min,max){
    var popul=[];
    for(indiv in count){
     popul.push(individual(population,min,max));
    }
    return popul;
}

我在哪里做错了什么我的代码给了我这个奇怪的数组结构？

原文

I'm just starting to learn genetic algorithms and I'm essentially writting this tutorial http://lethain.com/entry/2009/jan/02/genetic-algorithms-cool-name-damn-simple/ to javascript. with a few changes which better represent my dataset.

Anyway, when I output via newPop.toSource(), I get

[[#1=[[30,22],#2=[30,85],#3=[30,76]...]]],[#1#,#2#,#3#...#15]]]

I've never seen my .toSource output look like this, I was expecting just an array with two arrays inside it

My code is

var newPop=populate(data,population,0,70);

function individual(population, min, max){
   var newIndivids=[];
   for(s in population){
      newIndivids.push(population[s]);
     newIndivids[s][0]+=rand;
   }
   return newIndivids;

}

function populate(count,population,min,max){
    var popul=[];
    for(indiv in count){
     popul.push(individual(population,min,max));
    }
    return popul;
}

Is there something I'm doing wrong in my code which is giving me this strange array structure??

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給妳壹絲溫柔 2024-10-26 23:21:01

不确定这些 #1, #2, ... 是什么，但是 toSource() 是 gecko 特定的：https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Function/toSource
我的猜测是，这是对当时内存中对象的某种“引用”，即不是可移植的输出。

我建议您改用 JSON.stringify，它将输出数据结构的可移植字符串表示形式。

JSON 全局对象将在 Firefox/Safari/Chrome 中开箱即用，但如果您在 IE 中也需要它，您可以在此处获取：http://www.json.org/js.html

然后要反转它并取回实际的活动对象，请使用 JSON.parse ：

var data = JSON.parse(str);

Not sure what those #1, #2, ... things are, but toSource() is gecko specific: https://developer.mozilla.org/en/JavaScript/Reference/Global_Objects/Function/toSource
My guess is that it's some kind of "reference" to the object in memory at that point, i.e. not portable output.

I suggest you use JSON.stringify instead, which will output a portable string representation of your data structure.

The JSON global object will be available in Firefox/Safari/Chrome out of the box, but if you also need it in IE you can get it here: http://www.json.org/js.html

Then to reverse this and get back an actual living object, use JSON.parse: