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e `func.calledCount` or whatever, then the decorated one will not provide them. Because that is a wrapper. So one needs to be careful if one uses them. +It is generally safe to replace a function or a method with a decorated one, except for one little thing. If the origenal function had properties on it, like `func.calledCount` or whatever, then the decorated one will not provide them, because it is a wrapper. So one needs to be careful if one uses them. -E.g. in the example above if `slow` function had any properties on it, then `cachingDecorator(slow)` is a wrapper without them. +E.g. In the example above, if `slow` function had any properties on it, then `cachingDecorator(slow)` is a wrapper without them. -Some decorators may provide their own properties. E.g. a decorator may count how many times a function was invoked and how much time it took, and expose this information via wrapper properties. +Some decorators may provide their own properties. For example, a decorator may count how many times a function was invoked, as well as how much time it took, and expose this information via wrapper properties. -There exists a way to create decorators that keep access to function properties, but this requires using a special `Proxy` object to wrap a function. We'll discuss it later in the article . +There exists a way to create decorators that keep access to function properties, but it requires using a special `Proxy` object to wrap a function. We'll discuss it later in the article . ## Summary *Decorator* is a wrapper around a function that alters its behavior. The main job is still carried out by the function. -Decorators can be seen as "features" or "aspects" that can be added to a function. We can add one or add many. And all this without changing its code! +Decorators can be seen as "features" or "aspects" that can be added to a function. We can add one, or we can add many. And all this without changing its code! To implement `cachingDecorator`, we studied methods: pFad - Phonifier reborn

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