In Mathematica, one can specify the type of a module argument by giving the Head name. I am using type loosely here since Mathematica does not have types. But this does basically the same thing. So when someone calls
foo with argument which is not an integer, and
foo is defined to accept an argument whose head is integer, the call will not go through.
This is all great. But I'd like to do the same for local module variables. i.e. define a local variable that can only be assigned say
Real values or only
Integer values. But I can't do this now.
The question is, is there a way to do this?
I will give an example below how this is done in Maple, and how to do the same in Mathematica if possible. Here is a simple function that accepts only an integer. It then defines a local variable of type
float which maps to
Real in Mathematica. When it tries to assign an integer value to this variable, this is caught at run time by Maple and it gives an error. I find this feature very useful, and use it all the time, as it helps in finding errors in my code and I find it makes the code more robust.
Here is the Mathematica translation. I could only enforce the type on the arguments, but do not know how to do it for the local module variable.
Does there exist any methods in Mathematica to do the same as in the Maple example? I understand again that Mathematica does not have
types like Maple, but may be there is other workaround to emulate this?
V 13.1 on windows