产生某种指定类型和格式的结果的程序或另一种编码序列(如“宏生成程序”、“微代码生成程序”)。

A program or other coding sequence that produces a result of specified type and format (" a macro generator "; "a microcode generator").

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还可以创建没有参数的宏，在这种情况下不指定任何数字。

Macros can also be created without arguments, in which case they don't specify any number.

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类型安全意味着宏在进行类型转换之前，会验证指定操作可以在指定类型上安全地执行。

Type-safe means that the macro verifies that the specified operation can be performed on the given type before attempting to cast.

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