feat(naming): add support for roman numbers and jr suffix in extract_first_last_name/1 #2
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| defmodule ExToolkit.Roman do | ||
| @valid_romans ["I", "V", "X", "L", "C", "D", "M"] | ||
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| def is_valid_roman(string) do |
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| def is_valid_roman(string) do | |
| @spec is_valid_roman(String.t()) :: boolean() | |
| def is_valid_roman(string) when is_binary(string) do |
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Don't forget documentation and unit tests ☝️
nelsonmestevao
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nelsonmestevao
changed the title
nelsonmestevao
changed the title
| @@ -0,0 +1,20 @@ | |||
| defmodule ExToolkit.Roman do | |||
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| defmodule ExToolkit.Roman do | |
| defmodule ExToolkit.NumeralSystems.Roman do |
And then we can replace is_valid_roman/1 with just valid?/1, what do you think?
| string | ||
| |> String.upcase() | ||
| |> String.graphemes() | ||
| |> is_valid_roman(@valid_romans) |
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This does not make sense since you are using directly @valid_romans in the bottom case. You just need a guard.
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| defp is_valid_roman([head | tail], valid_romans) do | ||
| if Enum.member?(@valid_romans, head) do | ||
| is_valid_roman(tail, valid_romans) | ||
| else | ||
| false | ||
| end | ||
| end |
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| defp is_valid_roman([head | tail], valid_romans) do | |
| if Enum.member?(@valid_romans, head) do | |
| is_valid_roman(tail, valid_romans) | |
| else | |
| false | |
| end | |
| end | |
| defp is_valid_roman(graphenes) when is_list(graphenes) do | |
| Enum.all?(graphenes, &(&1 in @valid_romans)) | |
| end |
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And then you can just pipe it in the original case without the extra aux function 💡
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| defp is_valid_roman([], _), do: true | ||
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Suggested change
| defp is_valid_roman([], _), do: true |
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