Re: [julia-users] inner constructor returning an object of a different type

[Rafael Fourquet]

In the pre-jb/functions era, where higher-order functions where
suboptimal (because function calls would not specialize on them),
there was a trick using the feature you noticed to overcome this
limitation, i.e. make it fast. Cf the discussion at
https://groups.google.com/d/topic/julia-users/qscRyNqRrB4/Idiscussion.
Note that the fast-anonymous package by Tim Holy was using this trick.