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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"]

def is_valid_roman(string) do
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@nelsonmestevao nelsonmestevao Feb 10, 2024

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Suggested change
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 ☝️

.tool-versions Show resolved Hide resolved
@nelsonmestevao nelsonmestevao changed the title feat(naming): improve extract_fist_last_name feat(naming): add support for roman numbers and jr suffix in extract_fist_last_name Feb 10, 2024
@nelsonmestevao nelsonmestevao changed the title feat(naming): add support for roman numbers and jr suffix in extract_fist_last_name feat(naming): add support for roman numbers and jr suffix in extract_fist_last_name/1 Feb 10, 2024
@nelsonmestevao nelsonmestevao changed the title feat(naming): add support for roman numbers and jr suffix in extract_fist_last_name/1 feat(naming): add support for roman numbers and jr suffix in extract_first_last_name/1 Feb 10, 2024
@@ -0,0 +1,20 @@
defmodule ExToolkit.Roman do
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@nelsonmestevao nelsonmestevao Feb 10, 2024

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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.

Comment on lines +13 to +19
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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Suggested change
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 💡

Comment on lines +11 to +12
defp is_valid_roman([], _), do: true

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Suggested change
defp is_valid_roman([], _), do: true

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2 participants