Overloading getproperty to dereference fields of a pointer-to-struct

ex.jl

julia> function pointer_field(p::Ptr{T}, sym) where T
         idx = findfirst(s -> s==sym, fieldnames(T))
         ptype = fieldtypes(T)[idx]
         unsafe_load(Ptr{ptype}(Ptr{UInt8}(p) + fieldoffset(T, idx)))
       end
pointer_field (generic function with 1 method)

julia>

julia> struct X
         a::Int32
         b::Int32
         c::Int32
       end

julia> x = [X(1,2,3)]
1-element Array{X,1}:
 X(1, 2, 3)

julia> p = pointer(x)
Ptr{X} @0x000000011258a9f0

julia> function Base.getproperty(x::Ptr{X}, s::Symbol)
         if findfirst(x->x == s, fieldnames(X)) != nothing
           return pointer_field(x, s)
         else
           return getfield(x, s)
         end
       end

julia> p.a
1

julia> p.b
2

julia> p.c
3