I have some data which presents active days like this NNYYYYN or any
combination of them. I am told I can store the value of all combinations
in a single integer. I have read that this can be acheived by using
bitwise comparison. Unfortunately, I have never used this so don't
really understand it without seeing a simple explanation. I know you
guys are the best so would appreciate an explanation and ideally some
sample code.

Many Thanks