The VecTraits class allows templated functions, methods, and classes to
treat type arguments uniformly as Vec types or to otherwise differentiate
between scalar and vector types. This only works for types that VecTraits
is defined for.
The VecTraits templated class now has a default implementation that will
be used for any type that does not have a VecTraits specialization. This
removes many surprise compiler errors when using a template that, unknown
to you, has VecTraits in its implementation.
One potential issue is that if VecTraits gets defined for a new type, the
behavior of VecTraits could change for that type in backward-incompatible
ways. If VecTraits is used in a purely generic way, this should not be an
issue. However, if assumptions were made about the components and length,
this could cause problems.
Fixes #589 (closed)