[code]
import std.stdio;
import std.conv;

enum Values: ubyte{ One = 1, Two = 2 }

void main(){
	writeln( std.conv.to!string( Values.One ) );
}
[/code]

Output is "One".

casting works, but to be able to cast correctly, I need to tell compiler that it is "ubyte".

Isn't there any NON-HACKISH solution to print out the value of enum item? And do not decrease the performance as well please. It runs on web server.


Problem comes from that:
I have written a struct for JsonArray. It has multiple append methods. One of them is "appendNumber".

public ref JsonArray appendNumber(N)( N num )
if( __traits( compiles, {auto x=num.min + num.max;} ) || __traits( compiles, {auto x=num.min_normal;} ) )
{
	appendJSString( std.conv.to!string( num ) );
	return this;
}

While I am passing an enum item to this function, as it has "min" and "max" attributes, it is accepted. But the resulting string is the name of enum item instead of its value. I do not want casting while enum knows its type already.

On Wednesday, 23 December 2015 at 13:11:28 UTC, tcak wrote:
> [code]
> import std.stdio;
> import std.conv;
>
> enum Values: ubyte{ One = 1, Two = 2 }
>
> void main(){
> 	writeln( std.conv.to!string( Values.One ) );
> }
> [/code]
>
> Output is "One".
>
> casting works, but to be able to cast correctly, I need to tell compiler that it is "ubyte".
>
> Isn't there any NON-HACKISH solution to print out the value of enum item? And do not decrease the performance as well please. It runs on web server.
>

So you want the enum's integer value? Try casting it to an integer.

writeln(cast(ubyte) Values.One);

On Wednesday, 23 December 2015 at 17:43:52 UTC, Alex Parrill wrote:
> On Wednesday, 23 December 2015 at 13:11:28 UTC, tcak wrote:
>> [code]
>> import std.stdio;
>> import std.conv;
>>
>> enum Values: ubyte{ One = 1, Two = 2 }
>>
>> void main(){
>> 	writeln( std.conv.to!string( Values.One ) );
>> }
>> [/code]
>>
>> Output is "One".
>>
>> casting works, but to be able to cast correctly, I need to tell compiler that it is "ubyte".
>>
>> Isn't there any NON-HACKISH solution to print out the value of enum item? And do not decrease the performance as well please. It runs on web server.
>>
>
> So you want the enum's integer value? Try casting it to an integer.
>
> writeln(cast(ubyte) Values.One);

He already mentioned that.

What you want to do is use std.traits.

On Wednesday, 23 December 2015 at 17:43:52 UTC, Alex Parrill wrote:
> On Wednesday, 23 December 2015 at 13:11:28 UTC, tcak wrote:
>> [code]
>> import std.stdio;
>> import std.conv;
>>
>> enum Values: ubyte{ One = 1, Two = 2 }
>>
>> void main(){
>> 	writeln( std.conv.to!string( Values.One ) );
>> }
>> [/code]
>>
>> Output is "One".
>>
>> casting works, but to be able to cast correctly, I need to tell compiler that it is "ubyte".
>>
>> Isn't there any NON-HACKISH solution to print out the value of enum item? And do not decrease the performance as well please. It runs on web server.
>>
>
> So you want the enum's integer value? Try casting it to an integer.
>
> writeln(cast(ubyte) Values.One);

He already mentioned that.

What you want to do is use std.traits.OriginalType (https://dlang.org/phobos/std_traits.html#OriginalType) like so:

to!string(cast(OriginalType!Values)Values.one)