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elixir-koans/lib/koans/03_atoms.ex
2016-05-11 21:44:18 +01:00

32 lines
715 B
Elixir

defmodule Atoms do
use Koans
@intro "Atoms"
koan "Atoms are sort of like strings" do
adam = :human
assert adam == ___
end
koan "Strings can be converted to atoms, and vice versa" do
assert String.to_atom("atomized") == ___
assert Atom.to_string(:stringified) == ___
end
koan "It is surprising to find out that booleans are atoms" do
assert is_atom(true) == ___
assert is_atom(false) == ___
assert :true == ___
assert :false == ___
end
koan "Modules are also atoms" do
assert is_atom(String) == ___
end
koan "Functions can be called on the atom too" do
assert :"Elixir.String" == String
assert :"Elixir.String".upcase("hello") == ___
end
end