cdsousa

using FixedSizeArrays: Mat, FixedVector
immutable Vec{N, T} <: FixedVector{N, T}; _::NTuple{N, T}; end

macro fsa(expr)
    if expr.head == :vect
        Expr(:call, :Vec, expr.args...)
    elseif expr.head == :hcat
        Expr(:call, :Mat, [Expr(:tuple, a) for a in expr.args]...)
    elseif expr.head == :vcat
        if isa(expr.args[1], Expr) && expr.args[1].head == :row