Determines whether the function with the given id is strict, i.e., whether calling it forces its arguments.
Ternary#Always says every call forces every parameter, Ternary#Never that no call forces
all of them, and Ternary#Maybe that it depends on the path taken, on the caller, or on a function
flowR could not resolve. A definition without parameters has nothing to leave unforced and is strict.
Determines whether the function with the given id is strict, i.e., whether calling it forces its arguments. Ternary#Always says every call forces every parameter, Ternary#Never that no call forces all of them, and Ternary#Maybe that it depends on the path taken, on the caller, or on a function flowR could not resolve. A definition without parameters has nothing to leave unforced and is strict.