Declarative processing primitives
Traits
The major traits are [Process]/[SplitProcess]/[Inplace]/[SplitInplace].
Composition
Impls can be cascaded in (homogeneous) [C; N] arrays/[C] slices, and heterogeneous
(C0, C1) tuples. They can be used as configuration-major or
configuration-minor (through [Minor]) or in [Add]s on complementary allpasses and polyphase banks.
Tuples, arrays, and Pairs, and Minor can be mixed and nested ad lib.
Stateless filters should implement SplitProcess<X, Y, ()> for Self for composability.
Configuration-less filters or filters that include their configuration should implement
Process for Self and can be used in split configurations through [Split<(), Unsplit<Self>>].