地图类型名有微小变化。

The names of the map types have changed slightly.

youdao

一个类型快捷方式就是一个类型名的简短形式。

A type shortcut is a shortened form of a type name.

youdao

全局选择符，写做"*"，匹配任意元素类型名。

The universal selector, written "*", matches the name of any element type.

youdao

And just as with variables, you should use some common sense, some style here, and the function's name should X Y communicate what it does, calling it X or Y or Z is generally not all that helpful.

就像变量，你使用一些常识，一些类型，和函数名需要,传达它所做的事情，把它叫做,或者Z通常是没有什么用处的。

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