Does the example below from Types chapter of Julia manual depend on `Real <: Real`

being true? I’m assuming that author’s intention was to include the first definition of `norm`

in more generic definition, which follows.

Since Point{Float64} is not a subtype of Point{Real}, the following method can’t be applied to arguments of type Point{Float64}:

`function norm(p::Point{Real}) sqrt(p.x^2 + p.y^2) end`

The correct way to define a method that accepts all arguments of type Point{T} where T is a subtype of Real is:

`function norm{T<:Real}(p::Point{T}) sqrt(p.x^2 + p.y^2) end`