Question

I have an enum that is declared in the following manner (but with more options – about 15 or so) since I wanted an easy way to define all options without having to explicitly list them.

[Flags]
enum Options
{
    Option1 = 1,
    Option2 = 2,
    Option3 = 4,
    Option4 = 8,
    AllOptions = 15
}

So that instead of saying

Options foo = Options.Option1 | Options.Option2 | Options.Option3 |... ad nauseum

I can just say

Options foo = Options.AllOptions;

Is this wise? Or is there perhaps a better way to give a variable all available options without explicitly having to list them?

Answer 1

Or is there perhaps a better way to give a variable all available options without explicitly having to list them?

Well, you could use my Unconstrained Melody project:

Options allOptions = Flags.GetUsedBits<Options>();

(There are then all kinds of other operations you can do using Unconstrained Melody.)

Personally I’d try to avoid hard-coding an “all” value though – it would be all too easy to add a new value and forget to update the “all” value.

(I’d also avoid naming it AllOptions in this case – it should just be All, to avoid the redundancy in Options.AllOptions.)

If you do do it, add a unit test to make sure you’ve done it right 🙂