根据给定的属性合成一个函数引用。
Synthesizes a function reference type from given properties.
注意，该函数接受散列引用，而不是实际的文件名。
Note that this function takes a hash reference, not an actual file name.
通过使用引用，可以告诉函数指向信息的指针。
By using a reference, you tell the function to point to the information.
要求您永远不要忘记调用引用计数函数。
It requires that you never forget to call the reference counting functions.
callback—指的是当请求返回时将要调用的函数的引用。
Callback - a reference to a function that will be called when the request returns.
构造函数被作为引用传递给实际的语法self。
The constructor is passed a reference to the actual grammar self.
对象的引用可以以几种方式逃避它的构造函数，直接和简接都可以。
An object's reference can escape its constructor in several ways, both directly and indirectly.
相反，窗口小部件可以在其构造函数中引用它们的父代。
Instead, widgets take a reference to their parent in their constructors.
在这个函数的开始我们仍然有一些对堆栈的引用。
In the top of the function we still have some references to the stack.
一旦从该函数返回你将不能再试图引用这个对象了。
You should no longer try to reference this object upon returning from this function.
使用引用形参，函数可以直接访问实参对象，而无须复制它。
By using a reference parameter, the function can access the object directly without copying it.
这些链接引用answer _ question函数(稍后编写这个函数)。
These links are constructed to refer to the answer_question function you'll write in a moment.
函数相等需要它们引用的是同一个函数。
Function values are equal if they refer to the same function.
方法可以像普通函数一样引用全局名称。
Methods may reference global names in the same way as ordinary functions.
方法可以像引用普通的函数那样引用全局命名。
Methods may reference global names in the same way as ordinary functions.
简单地翻译一下，是说这个函数的参数是不能依靠引用来传递的。
Note: Note that the parameters for call_user_func() are not passed by reference.
为了说明这个关系式引用了调制传递函数的概念。
In order to explain the relationship, the concept of the modulation transfer function is used.
为了说明这个关系式引用了调制传递函数的概念。
In order to explain the relationship, the concept of the modulation transfer function is used.
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