take symbol as parameter
rjframe
dlang at ryanjframe.com
Sat Dec 30 23:30:02 UTC 2017
On Sat, 30 Dec 2017 13:07:49 +0000, Marc wrote:
> how do I take a symbol as parameter?
>
> for example:
>
>> template nameof(alias S) {
>> import std.array : split;
>> enum nameof = S.stringof.split(".")[$-1];
>>}
>
> Works fine for say a enum member such nameof!(myEnum.X) but this:
>
>> struct S { int v; }
>> S s;
>> writefln(nameof!(s.v)); // should return "v"
>
> return the following error:
>
>> Error: template instance nameof!(v) cannot use local 'v' as parameter
>> to > non-global template nameof(alias S)
You can use the name of the struct rather than the instance.
writefln(nameof!(S.v));
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