21 lines
440 B
Julia
21 lines
440 B
Julia
abstract type Mammal end
|
|
habitat(::Mammal) = "planet Earth"
|
|
|
|
struct Whale <: Mammal
|
|
mass::Float64
|
|
habitat::String
|
|
end
|
|
Base.show(io::IO, ::Whale) = print(io, "a whale")
|
|
habitat(w::Whale) = w.habitat
|
|
|
|
struct Wolf <: Mammal
|
|
mass::Float64
|
|
end
|
|
Base.show(io::IO, ::Wolf) = print(io, "a wolf")
|
|
|
|
arr = [Whale(1000, "ocean"), Wolf(50)]
|
|
println("Type of $arr is ", typeof(arr))
|
|
for a in arr
|
|
println("Habitat of $a: ", habitat(a))
|
|
end
|