Storing arrays as Variant types.

[Ali Çehreli via Digitalmars-d-learn]

Minimal code for convenience to others:

import std.variant;

void main()
{
     Variant aVariant;
     Variant bVariant;

     char[] a = aVariant.coerce!(char[]);
     byte[] b = bVariant.coerce!(byte[]);
}

On 12/23/2014 02:57 PM, Winter M. wrote:

 > I've run into a problem while trying to coerce array values from a
 > variant; specifically,
 >
 > char[] a = aVariant.coerce!(char[]); // This works just fine.
 >
 > byte[] b = bVariant.coerce!(byte[]); // This causes a static assertion
 > to fail.
 >
 > I'm not really sure why a byte[] would be an unsupported type, since
 > memory-wise the reference should take up as much space as for the char[]
 > (as I understand it).
 > Perhaps I'm missing something, but I'm lost as to why this is the case.

The difference is that char[] passes the isSomeString test (as it is a 
string) but byte[] does not:

 
https://github.com/D-Programming-Language/phobos/blob/master/std/variant.d#L877

Ali