Perhaps it would be less ambiguous if we turned const/immutable for functions into annotations:
@const Foo bar(); //const function @immutable Foo bar(); //immutable function @immutable const(Foo) bar(); //immutable function with const return value @const const(Foo) bar(); //const function with const return value immutable(Foo) bar(); //mutable function with immutable return value @immutable immutable(Foo) bor(); //immutable function with immutable return value But I'm not a big fan of "@", it clutters up source code.
