How can i get the value from an enum when passed to a function?

[Jakob Ovrum]

On Sunday, 19 January 2014 at 18:07:46 UTC, Tobias Pankrath wrote:
> You'll need to cast the value, but you can guard this cast 
> using std.traits.OriginalType or write a toOType function.
>
> auto toOType(E)(E e) if(is(E == enum)) { return 
> cast(OriginalType!E) e; }
>
> I never get these is-expressions right on first try, but the 
> idea should be clear.

You don't have to use an explicit cast. Enum values can be 
implicitly converted to their base enum type:

---
string str = E.one;
writeln(str); // prints "1"
---

If DMD pull request #1356[1] is pulled, I think we'll be able to 
do:

---
writeln(string(E.one)); // prints "1"
---

I recommend avoiding the cast operator whenever possible.

[1] https://github.com/D-Programming-Language/dmd/pull/1356