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elixir-koans/lib/koans/03_tuples.ex
2016-04-23 12:03:13 +01:00

36 lines
865 B
Elixir

defmodule Tuples do
use Koans
koan "Tuples can contain different things" do
assert {:a, 1, "hi"} == ___
end
koan "Tuples have a size" do
assert tuple_size({:a, :b, :c}) == ___
end
koan "You can pull out individual elements" do
assert elem({:a, "hi"}, 1) == ___
end
koan "You can change individual elements of a tuple" do
assert put_elem({:a, "hi"}, 1, "bye") == ___
end
koan "You can also simply extend a tuple with new stuff" do
assert Tuple.insert_at({:a, "hi"}, 1, :new_thing) == ___
end
koan "Add things at the end" do
assert Tuple.append({"Huey", "Dewey"}, "Louie") == ___
end
koan "Or remove them" do
assert Tuple.delete_at({:this, :is, :not, :awesome}, 2) == ___
end
koan "Turn it into a list in case you need it" do
assert Tuple.to_list({:this, :can, :be, :a, :list}) == ___
end
end