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元类

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元类

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元类

metaclass

从元类(metaclass)说起author: YoungKing version: 0.1 Licence: GPL Date: 2009.03.29 定义从元类(metaclass)说起元类是99…

metaclasses

64 元类(Metaclasses): 用来定义某些类是如何被创建的, 默认使用的元类是type, 元类就是类的类64.1 创建一个类的时候, 解释 …

metaclass willmigerl

刚到处的UCdict术语词典... ... messaging willmigerl 消息传递 metaclass willmigerl 元类 meta-metamodel willmigerl 元-元模型 ...

métaclasse

一元发生说 French, 翻译, 发音, 字典... ... 元件 composant 元类 métaclasse 元数据 métadonnées;métadonnée ...

例句：

You could accomplish the above sort of job with a custom metaclass, attached to XO, but with behavior determined dynamically.

应该用一个附加到 XO 、行为是动态决定的自定义元类来完成上述工作。

For instance , it took us a few months to understand how to use metaclasses, but a few years to understand how not to use them .

例如，花几个月时间就能理解如何使用元类，但是要花几年时间才能明白如何不使用它们。

The values of such attributes would be actual instance(s) of the metaclass .

这个属性集的值将会在元类的实例中生效。

We explain the concept of composition of metaclasses.

我们将解释元类合成的概念。

Of course , the guilt of the authors is obvious here : our earlier installments on metaclasses in Python helped popularize their usage.

当然，作者的过错也很明显：我们的关于 Python 中的元类的前几部分助长了这种做法的流行。

Each of these metaclasses has attributes from which Class inherits .

这些元类都有 Class 继承的属性。

The metaclass will create the class (as a new style one) and will pass it to the class initializer procedure .

元类将创建此类（作为一个新式类）并将其传递给类初始化器过程。

Properties of class type (including metaclass and stereotype associations ) should have this option selected .

类的属性（包括元类和原型的关联）应该选择这个属性。

Many programmers are confused about the difference between a metaclass and a base class .

许多程序员会混淆元类和基类的不同。

The metaclasses being extended by the stereotype are specified on the Extensions tab in the Properties view .

元类被原型所扩展，是在属性视图 Extensions 标检页完成的。

Finally , it contains a stereotype , lessThan, which extends the metaclass Association.

最后，它包含了一个原型，lessThan ，它扩展了元类 Association 。

Concrete subtypes of the metaclass extension 's EClass will automatically be added .

元类扩展的 EClass 的具体子类型将会自动被添加。

It consists of a number of proxies and meta-classes.

它包含许多代理和元类。

When you select multiple metaclasses, a generic features window opens where you can change the stereotype.

当您选择多个元类时，一个通用特性窗口会在您变更模板的地方打开。

And this yuan of syncretic is not open give application programmer .

而这个元类并未开放给应用程序员。

Notice that metaclasses were never mentioned in the lookup procedure .

注意，从未在查找过程中提到过元类。

To do so, we assign a closure to the up property of the meta-class which is created as we assign it the closure.

之后，我们为元类的 up 属性分配一个闭包，这个属性是在我们把闭包分配给它的时候创建的。

In the following example, the msg String instance has got a meta-class that we can access through the metaClass property .

在下面的例子中，字符串 msg 的实例有一个元类，我们可以通过 metaClass 属性访问该元类。

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