edf50fdf80
- Run mix credo --all to identify possible code optimizations - Resolve most of the errors generated by credo such as: - Numbers larger than 9999 should be written with underscores: 58_127 - Modules should have a @moduledoc tag - Comparison will always return true
47 lines
1.1 KiB
Elixir
47 lines
1.1 KiB
Elixir
defmodule Strings do
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@moduledoc false
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use Koans
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@intro "Strings"
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koan "Strings are there to represent text" do
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assert "hello" == ___
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end
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koan "Values may be inserted into strings by interpolation" do
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assert "1 + 1 = #{1 + 1}" == ___
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end
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koan "They can be put together" do
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assert "hello world" == ___ <> "world"
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end
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koan "Or pulled apart into a list when needed" do
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assert ["hello", "world"] == String.split(___, " ")
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end
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koan "Be careful, a message may be altered" do
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assert String.replace("An awful day", "awful", "incredible") == ___
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end
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koan "But strings never lie about themselves" do
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assert true == String.contains?("An incredible day", ___)
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end
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koan "Sometimes you want just the opposite of what is given" do
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assert ___ == String.reverse("ananab")
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end
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koan "Other times a little cleaning is in order" do
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assert String.trim(" \n banana\n ") == ___
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end
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koan "Repetition is the mother of learning" do
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assert String.duplicate("String", 3) == ___
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end
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koan "Strings can be louder when necessary" do
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assert String.upcase("listen") == ___
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end
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end
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