Is there any way in D to define static methods or members within an enum's scope, as one might do in Java? It can sometimes help with code organization. For example, this is something that coming from Java I'd have expected to be valid but isn't:

enum SomeEnum{
    NORTH, SOUTH, EAST, WEST;

    static int examplestaticmethod(in int x){
        return x + 2;
    }
}

int z = SomeEnum.examplestaticmethod(2);

On Wednesday, 6 April 2016 at 13:59:42 UTC, pineapple wrote:
> Is there any way in D to define static methods or members within an enum's scope, as one might do in Java?

No. You could make a struct rather than an enum though with the methods, and a bunch of static things to simulate SomeEnum.NORTH.

On Wednesday, 6 April 2016 at 13:59:42 UTC, pineapple wrote:
> Is there any way in D to define static methods or members within an enum's scope, as one might do in Java? It can sometimes help with code organization. For example, this is something that coming from Java I'd have expected to be valid but isn't:
>
> enum SomeEnum{
>     NORTH, SOUTH, EAST, WEST;
>
>     static int examplestaticmethod(in int x){
>         return x + 2;
>     }
> }
>
> int z = SomeEnum.examplestaticmethod(2);

You can use UFCS:

enum SomeEnum { NORTH, ... }

int examplestaticmethod(in SomeEnum e) { return e+2; }

SomeEnum.NORTH.examplestaticmethod();

On Wednesday, 6 April 2016 at 13:59:42 UTC, pineapple wrote:
> Is there any way in D to define static methods or members within an enum's scope, as one might do in Java? It can sometimes help with code organization. For example, this is something that coming from Java I'd have expected to be valid but isn't:
>
> enum SomeEnum{
>     NORTH, SOUTH, EAST, WEST;
>
>     static int examplestaticmethod(in int x){
>         return x + 2;
>     }
> }
>
> int z = SomeEnum.examplestaticmethod(2);

Java's enums are classes, which is why that works. Nothing in Java can exist outside of a class. D's enums are like those in C. They do not define objects, just constant values.

On Wednesday, 6 April 2016 at 13:59:42 UTC, pineapple wrote:
> Is there any way in D to define static methods or members within an enum's scope, as one might do in Java? It can sometimes help with code organization. For example, this is something that coming from Java I'd have expected to be valid but isn't:
>
> enum SomeEnum{
>     NORTH, SOUTH, EAST, WEST;
>
>     static int examplestaticmethod(in int x){
>         return x + 2;
>     }
> }
>
> int z = SomeEnum.examplestaticmethod(2);

You can't declare functions inside of an enum, however, you can emulate the behaviour using an anonymous enum inside of a struct or class.

ie.

struct SomeEnum
{
    enum : SomeEnum
    {
        NORTH = SomeEnum("North"),
        EAST  = SomeEnum("East"),
        SOUTH = SomeEnum("South"),
        WEST  = SomeEnum("West")
    }

    const string name;

    static SomeEnum getWithName(string name)
    {
        // . . .
    }
}