On Monday, 15 April 2019 at 10:15:50 UTC, Anton Fediushin wrote:
On Monday, 15 April 2019 at 10:00:36 UTC, Alex wrote:
Enum.internal is private to make it inaccessible from any other
place. All I want is a way to have an enum that I could extend
with my own methods.
Something to make the following code work:
```
Enum a = Enum.foo;
Enum b = Enum.bar;
assert(a == Enum.foo);
assert(a < b);
assert(a.toString == "FOO");
assert(b.toString == "BAR");
writeln(a); // FOO
writeln(b); // BAR
```
This would:
´´´
struct Enum {
private {
enum internal {
foo,
bar
}
internal m_enum;
}
this(internal i) { m_enum = i; }
alias m_enum this;
string toString() {
if(m_enum == internal.foo)
return "FOO";
else
return "BAR";
}
}
void fun(Enum e) {}
void main(){
import std.stdio;
fun(Enum.init);
Enum a = Enum.foo;
Enum b = Enum.bar;
assert(a == Enum.foo);
assert(a < b);
assert(a.toString == "FOO");
assert(b.toString == "BAR");
writeln(a); // FOO
writeln(b); // BAR
}
´´´
Assuming, that automatic generation of "FOO" from foo was not
part of your question :-p
