On Monday, 15 April 2019 at 14:11:05 UTC, diniz wrote:
Le 15/04/2019 à 10:39, Anton Fediushin via Digitalmars-d-learn
a écrit :
[snip]
I don't understand why you just don't call fun with an Enum
(struct) param, since that is how fun is defined. This works by
me (see call in main):
struct Enum {
private {
enum internal {
foo,
bar
}
internal m_enum;
}
this (internal i) { m_enum = i; }
alias m_enum this;
string toString() {
switch (this.m_enum) {
case internal.foo : return "FOO" ;
case internal.bar : return "BAR" ;
default : assert(0) ;
}
}
}
void fun (Enum e) {
writeln(e) ;
}
void main() {
auto e = Enum(Enum.foo) ;
fun(e) ; // -> "FOO"
}
[And I wouldn't make the enum (little e) private, this just
risks complicating code, also eg in testing, I would just not
export it.]
`fun(Enum(Enum.foo));` would obviously work but `fun(Enum.foo);`
would not. `Enum(Enum` is just redundant, I was looking for a
solution that would make code cleaner.
I don't see a problem marking internal enum as private because it
isn't accessed outside of the struct
