With a bit of extra syntax, you can data type your variables for this.

增加一些语法，即可为此确定您的变量的数据类型。

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Syntax-rules is the type of transformation being applied.

syntax - rules是要采用的转换类型。

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This syntax works by determining the most specific type common to each argument.

这种语法是通过判断与每个参数最接近的类型来实现的。

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This syntax works by determining the most specific type common to each argument.

这种语法是通过判断与每个参数最接近的类型来实现的。

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