Say I have an immutable with only one type.
immutable Strain
exx::Float64
eyy::Float64
ezz::Float64
gyz::Float64
gxz::Float64
gxy::Float64
end
Is there anyway I can reinterpret this as a Vector{Float64} in a fast way
without copying data. The memory of the Strain type should be exactly like
the vector.
The reason I want to do this is because I want to i.e. be able to multiply
a strain and a general matrix but I also want to be able to write my own
functions for Strain.
Naively, I tried this:
julia> reinterpret(Vector{Float64}, strain)
ERROR: reinterpret: expected bits type as first argument
in reinterpret at base.jl:65
I saw this comment in one of the issues here
https://github.com/JuliaLang/julia/issues/5857:
"ImmutableArrays has the advantage that Array(Vector4{Int}, 10) it can be
reinterpreted as a 4x10 matrix with reinterpret and reshape without memory
movement (e.g. when calling a c function on the data)."
Best regards,
Kristoffer Carlsson
