type Type1
    a::Matrix{Float64} # why not vector of vectors?
    b::Vector{Matrix{Float64}}
    c::Vector{Float64}
    d::Float64
    e::Int64
end

type Type2{T}
    a::Matrix{T} # why not vector of vectors?
    b::Vector{Matrix{T}}
    c::Vector{T}
    d::T
    e::Int64
end

a = rand(30, 30)
b = Matrix[rand(10, 10), rand(10, 10)]
b_ = Matrix{Float64}[rand(10, 10), rand(10, 10)]
c = rand(30)
d = 0.9
e = 3

Type1(a, b, c, d, e)
Type2(a, b, c, d, e)
Type2(a, b_, c, d, e)