[julia-users] When are @generated functions useful?

[Matt]

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?