Coffeescript Object作为私人会员，是否可能？

I'm used to being able to in Java define an object which can contain other objects as members, for example (psuedocode):

我习惯于在Java中定义一个可以包含其他对象作为成员的对象,例如(psuedocode):

class Zoo{
private List<Animal> animals;
}
class Animal {
private double weight;
private double height;
private double species;
}

Then you could have a constructor for zoo which takes X animals and adds them to an animal collection and have it's own methods.

然后你可以有一个动物园的构造函数,它接受X动物并将它们添加到动物集合中并拥有它自己的方法。

In coffeescript I can't seem to be able to do this, is this a limitation of javascript?

在coffeescript中我似乎无法做到这一点,这是javascript的限制吗?

1 个解决方案

#1

hope I understood your question.

希望我理解你的问题。

in Coffeescript you may write

在Coffeescript你可以写

class Animal
  name: ''

class Zoo
  animals: [] #notice you do not specify type!

  constructor: (animalList) ->
    @animals = animalList #and animal list is an array of Animal class instances


zoo = new Zoo([new Animal()])
console.log(zoo.animals.length) #should be eq to 1

If you want animals to be private same as it would be in Java or C#, I would recommend not using classes but:

如果你想让动物与Java或C#中的动物相同,我建议不要使用类,但是:

Zoo = (animals) ->

  return {
    getAnimals: -> animals
    addToAnimals: (animal) -> animals.push(animal)
  }

#1