On Wednesday, 27 April 2016 at 10:49:54 UTC, Nordlöw wrote:
What's the easiest way to create an `enum` using the symbol
names of an `AliasSeq` as enumerator names?
/** Returns: a `string` containing the definition of an `enum`
named `name` and
with enumerator names given by `Es`, optionally prepended
with `prefix` and
appended with `suffix`.
TODO Move to Phobos std.typecons
*/
string makeEnumDefinitionString(string name,
string prefix = `_`,
string suffix = ``,
Es...)()
if (Es.length >= 1)
{
typeof(return) s = `enum ` ~ name ~ ` { `;
foreach (E; Es)
{
s ~= prefix ~ E.stringof ~ suffix ~ `, `;
}
s ~= `}`;
return s;
}
@safe pure nothrow @nogc unittest
{
import std.meta : AliasSeq;
alias Types = AliasSeq!(byte, short);
mixin(makeEnumDefinitionString!("Type", `_`, `_`, Types));
static assert(is(Type == enum));
static assert(Type._byte_.stringof == "_byte_");
static assert(Type._short_.stringof == "_short_");
}
Can it be made more elegant?
Destroy!
