The symbols to test.
Whether or not all of Classes are structs or classes.
struct S1 { } struct S2 { } struct C1 { } struct C2 { } assert( isExtendable!( S1 ) ); assert( isExtendable!( C1 ) ); assert( isExtendable!( S1, S2 ) ); assert( isExtendable!( C1, C2 ) ); assert( isExtendable!( S1, C2 ) ); assert( isExtendable!( C1, C2 ) );
Makes sure the types given can be extended.