Simpler first example

[femtotrader]

Hello,

I think it would help to have a simpler first example with a Vector and NamedTuple

Here is a proposal.

julia> using StructArrays

julia> adata = [1, 2]
2-element Vector{Int64}:
 1
 2

julia> bdata = [10.1, 20.1]
2-element Vector{Float64}:
 10.1
 20.1

julia> x = StructArray{NamedTuple{(:a, :b), Tuple{Int, Float64}}}((adata, bdata))
2-element StructArray(::Vector{Int64}, ::Vector{Float64}) with eltype @NamedTuple{a::Int64, b::Float64}:
 (a = 1, b = 10.1)
 (a = 2, b = 20.1)

julia> x.a
2-element Vector{Int64}:
 1
 2

julia> x.b
2-element Vector{Float64}:
 10.1
 20.1

julia> x[1]
(a = 1, b = 10.1)

Any opinion?