示例：对圆的面积执行函数索引

Example: Functional index on the area of a circle

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示例：对图像的平均RG b值执行函数索引。

Example: Functional index on the average RGB values of an image.

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将包括许多执行函数的算子，例如数据聚合、联接、分割和复杂函数。

Many operators that perform functions are included, such as data aggregation, joining, splitting, and complex functions.

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So now, henceforth, when you say, to declare a function, I am declaring a function here but down here am I quote unquote defining it or implementing it.

从此以后，当你说，声明一个函数，我在这里声明了一个函数,但是到这里我定义它或执行它。

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printf That's not actually where someone implemented print F and related functions, rather, in dot H files, by convention, are prototypes.

那实际不是有某人在哪里执行,相关函数，而是在，h文件中，按照惯例，它们是函数原型。

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Now this is not a particularly compelling pace just yet of implementing your own function.

这里没有一个特别的强制性的步骤,来执行你自己的函数。

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