Parametric objectives and constraints

[andgoldschmidt]

Should a Union type be here or just one type?

DirectTrajOpt.jl/src/objectives/_objectives.jl

Line 34 in 8ea59c4

∂²L::Union{F3, Nothing}

Do we want to avoid abstract vectors?

DirectTrajOpt.jl/src/constraints/nonlinear_constraints.jl

Line 10 in 8ea59c4

times::AbstractVector{Int}