Optionally matches p
Return data type will be a Nullable of p's data type
import sdpc.parsers; auto i = "asdf"; auto r6 = optional!(token!"x")(i); assert(r6.ok); assert(r6.v.isNull); auto r7 = optional!(token!"a")(i); assert(r7.ok); assert(!r7.v.isNull);
See Implementation
Optionally matches p
Return data type will be a Nullable of p's data type