The following program crash with the following error:
----
std.variant.VariantException@std\variant.d(1161): Attempt to use an uninitialized VariantN
----
========
module main;

import std.variant;
import std.stdio;

class Foo
{
}

int main(string[] argv)
{
   Variant v1 = Variant.init;
   writeln(v1.convertsTo!Foo);

   return 0;
}
========
Why would a test method, which test if the value can be used thrown an error?
Why simply not return false if the variant is uninitialized?

Anyway I found a work around
----
writeln(v1 != Variant.init && v1.convertsTo!Foo);
----

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