What is the best way to do terse type printing?

[jonniedie]

Example:

@concrete terse struct MyType{B}
    a
    b::B
end

x = MyType("hi", 2.0)

Here is what the full type looks like (the explicitly declared parameters always come first, regardless of the position of their corresponding fields):

julia> typeof(x)
MyType{Float64,String}

Options:

1. No type params (baseline):

julia> x
MyType("hi", 2.0)

2. Elipses:

julia> x
MyType{...}("hi", 2.0)

3. Only the explicitly declared params:

julia> x
MyType{Float64}("hi", 2.0)

4. Only the explicitly declared params, but with elipses:

julia> x
MyType{Float64,...}("hi", 2.0)