I'm not aware of any other languages with anything quite like Julia's generated functions but would be very interested in hearing of features that are similar to it.
On Tue, Oct 6, 2015 at 11:19 AM, Steven G. Johnson <[email protected]> wrote: > > > On Tuesday, October 6, 2015 at 10:17:27 AM UTC-4, Páll Haraldsson wrote: >> >> On Monday, October 5, 2015 at 7:34:43 PM UTC, Matt wrote: >>> >>> Most of the time I read Julia code with generated functions, the goal is >>> loop >>> unrolling <https://en.wikipedia.org/wiki/Loop_unrolling> (included the >>> main example in the documentation >>> <http://julia.readthedocs.org/en/latest/manual/metaprogramming/#generated-functions> >>> ). >>> What are other good cases to use @generated functions? >>> >> >> I (think I) understand the (hygenic) macro (Lisp-like) concept, and kind >> of, generated functions (I understand that those are macros on steroids..). >> > > Macros are functions evaluated at *parse time*, given the *symbolic* > expressions (ASTs) of the arguments and returning a transformed > expression. Generated functions are functions evaluated at *compile time*, > given the *types* of the arguments and returning a symbolic expression. > Ordinary functions are functions evaluated at *runtime*, given the > *values* of the arguments and returning a value. >
