Template declaration doesn't match
John Colvin
john.loughran.colvin at gmail.com
Sun Feb 9 11:49:29 PST 2014
On Sunday, 9 February 2014 at 19:16:35 UTC, tcak wrote:
> I started writing a piece code today. It is as following.
>
> class Test{
> public enum DATA_LENGTH = 16;
>
> public static void foo( T )( in T[DATA_LENGTH] msg ) if( is(T:
> ubyte) || is(T: char)){
> //...
> }
>
> public static void bar( in ubyte[DATA_LENGTH] msg ){
> //...
> }
> }
>
> void main(){
> ubyte[ Test.DATA_LENGTH ] msg;
>
> Test.foo( msg ); // error: template bugtest.Test.foo does not
> match any function template declaration.
>
> Test.bar( msg ); // ok. works
> }
>
> If I call `foo`, it gives error as noted. I am on Ubuntu 13.10
> 64-bit, DMD 2.064.2.
>
> Is that error normal and I am missing something? or a bug?
bug. Pretty sure it's only a problem with static arrays.
Here's a workaround, using std.traits.isStaticArray and
std.range.ElementType :
public static void foo(T)(in T msg)
if(isStaticArray!T && T.length == DATA_LENGTH
&&(is(ElementType!T : ubyte) || is(ElementType!T : ubyte)))
{
//...
}
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