每个函数的定义都给出了函数名和函数的元数，以便您能导出函数的特定定义。
The definition for each function shows the function name with the arity of the function. This enables you to export very specific definitions of the function.
每个函数的定义都给出了函数名和函数的元数，以便您能导出函数的特定定义。
The definition for each function shows the function name with the arity of the function. This enables you to export very specific definitions of the function.
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