Your constructor is returning the RHS of the last assignment in that
statement block — the passed coef_ vector. Simply amending your
constructor to return `x` makes this behave as you expect.
type FIR{in_t, coef_t}
in::Vector{in_t}
coef::Vector{coef_t}
FIR (in_::Vector{in_t}, coef_::Vector{coef_t}) = (x=new(); x.in = zeros(
in_t, size (in_)); x.coef = coef_; x)
end
On Wednesday, July 30, 2014 11:01:06 AM UTC-4, Neal Becker wrote:
>
> As a learning exercise, I am trying to code a simple FIR filter.
> As a start, it has 2 fields and a constructor:
>
> type FIR{in_t, coef_t}
> in::Vector{in_t}
> coef::Vector{coef_t}
> FIR (in_::Vector{in_t}, coef_::Vector{coef_t}) = (x=new(); x.in =
> zeros(in_t, size (in_)); x.coef = coef_;)
> end
>
> w = zeros (Float64, 10)
> f = FIR{Float64,Float64}(w,w)
>
> This code executes, but seems very confused:
> julia> typeof(f)
> Array{Float64,1}
>
> Huh? I expected "f" to be of type FIR{Float64,Float64}. Clearly I'm
> doing
> something very wrong.
>
>
