I think you need g{T<:MyString}(x::Vector{T})
Have a look in http://docs.julialang.org/en/release-0.4/manual/types/#man-parametric-types for parametric types.
I think you need g{T<:MyString}(x::Vector{T})
Have a look in http://docs.julialang.org/en/release-0.4/manual/types/#man-parametric-types for parametric types.