I'd like to say I'm a huge fan of Julia, and don't have much experience with metaprogramming in other languages. I'm sure I do more of this than necessary, but

I'd like to say I'm a huge fan of Julia, and don't have much experience with metaprogramming in other languages. I'm sure I do more of this than necessary, but much of my code ends up being "generated functions". @generated foo(x, y) ... end When you write an `@generated` function, you write code that creates a Julia expression. Using "x" and "y" in the function give you the types of these arguments. Defining parametric structs lets you pass any information you want (eg, array sizes) to specialize code and algorithms. A very useful library: https://github.com/MikeInnes/MacroTools.jl https://github.com/MikeInnes/MacroTools.jl