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elixir-koans/lib/koans/03_sigils.ex
2016-05-17 07:54:33 -05:00

40 lines
944 B
Elixir

defmodule Sigils do
use Koans
@intro "Sigils"
koan "The ~s sigil is a different way of expressing string literals" do
assert ~s{This is a string} == ___
end
koan "Sigils are useful to avoid escaping quotes in strings" do
assert "\"Welcome to the jungle\", they said." == ___
end
koan "Sigils can use different delimiters" do
matches? = ~s{This works!} == ~s[This works!]
assert matches? == ___
end
koan "The lowercase ~s sigil supports string interpolation" do
assert ~s[1 + 1 = #{1+1}] == ___
end
koan "The ~S sigil is similar to ~s but doesn't do interpolation" do
assert ~S[1 + 1 = #{1+1}] == ___
end
koan "The ~w sigil creates word lists" do
assert ~w(Hello world) == ___
end
koan "The ~w sigil also allows interpolation" do
assert ~w(Hello 1#{1+1}3) == ___
end
koan "The ~W sigil behaves to ~w as ~S behaves to ~s" do
assert ~W(Hello #{1+1}) == ___
end
end