Parsimonious way to unpack big structs

[amrods]

@jlperla

But the problem with your code is one of defensive programming: α, β, γ = p.α, p.β, p.γ is extremely error prone. If you accidentally get them out of order, maybe after adding a new parameter or removing one, then you will get all sorts of silent bugs.

That’s precisely what drove me to ComponentArrays. It is also very tedious to change the code to try different model pieces that take subsets of a large vector of parameters.

@apo383

If other people will look at the code, I’d prefer to at least give a hint with

(; a, b) = p # unpacking fields

That is what I do, just with @unpack.