Why do some people use "None" as enumeration member ?
- by alex
I noticed that some enumerations have "None" as a enumeration member.
For example what I mean
enum Mode
{
Mode1 = 1,
Mode2 = 2,
Mode3 = 3,
None = 4
}
Why do they use it ? In what cases solution with a none member is more preferable (less preferable) ?