Julia 1.0 Programming Cookbook

How to do it...

Start with defining the custom Point type, and next learn how to store it in an array as follows:

1. First, define the type that you will be working with:

julia> struct Point{T<:Integer, S<:AbstractString}           pos::Complex{T}           label::S       endjulia> Point(x::T, y::T, label::S) where {T<:Integer,                                          S<:AbstractString} =           Point{T,S}(Complex(x,y), label)Pointjulia> Point(x, y, label) = Point(promote(Integer.((x,y))...)...,                                  label)Point

2. Next, create a few instances of this type:

julia> p1 = Point(1, 0, "1")Point{Int64,String}(1 + 0im, "1")julia> p2 = Point(1, 0, SubString("1", 1))Point{Int64,SubString{String}}(1 + 0im, "1")julia> p3 = Point(true, false, "1")Point{Bool,String}(Complex(true,false), "1")julia> p4 = Point(2, 0, "2")Point{Int64,String}(2 ...