How to use it. 1  Open Excel & VBA editor 2  (+) Insert the code below under Sheet1. 3  Go back to Excel and select your desired range to fill with random & non-repeating numbers.  Execute the macro (+)
See also What are the rules about using an underscore in a C++ identifier; a lot of the same rules apply to both C and C++, though the embedded double-underscore rule is in C++ only, as mentioned at the top of this answer. Names with double leading underscores are reserved for use by the implementation.
A single underscore before a name is used to specify that the name is to be treated as âprivateâ by a programmer. Itâs kind of* a convention so that the next person (or yourself) using your code knows that a name starting with _ is for internal use. As the Python documentation notes: