I have some C++ code, in which the following enum is declared:

enum Some 
{
   Some_Alpha = 0,
   Some_Beta,
   Some_Gamma,
   Some_Total
};
int array[Some_Total];

The values of Alpha, Beta and Gamma are sequential, and I gladly use the following cycle to iterate through them:

for ( int someNo = (int)Some_Alpha; someNo < (int)Some_Total; ++someNo ) {}

This cycle is ok, until I decide to change the order of the declarations in the enum, say, making Beta the first value and Alpha - the second one. That invalidates the cycle header, because now I have to iterate from Beta to Total. So, what are the best practices of iterating through enum? I want to iterate through all the values without changing the cycle headers every time. I can think of one solution:

enum Some 
{
   Some_Start = -1,
   Some_Alpha,
   ...
   Some_Total
};
int array[Some_Total];

and iterate from (Start + 1) to Total, but it seems ugly and I have never seen someone doing it in the code. Is there any well-known paradigm for iterating through the enum, or I just have to fix the order of the enum values? (let's pretend, I really have some awesome reasons for changing the order of the enum values)...