rok::core::num::assign
rok::core::num::assign - the *Assign impls (stdlib 2.4.6) of the
primitives, int / float and str. A primitive's method is
#[intrinsic("rok.OP_assign.TYPE")]: a += b and a by-name call both
lower to a = a op b. %%= has no machine op; it calls Modulo.
One block per (type, trait); keep it regular.