35 lines
1.2 KiB
Markdown
35 lines
1.2 KiB
Markdown
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# Hints
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## General
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- Use the built-in [(linked) list type][list].
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## 1. Define a function to return an empty language list
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- The function needs to return `[]`.
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## 2. Define a function to add a language to the list
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- An element can be prepended to a list using `|`.
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## 3. Define a function to remove a language from the list
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- Elixir [provides a function][tl] to return a list with the first item removed.
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## 4. Define a function to return the first item in the list
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- Elixir [provides a function][hd] to get the first item from a list.
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## 5. Define a function to return how many languages are in the list
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- Elixir [provides a function][length] to count the length of a list.
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## 6. Define a function to determine if the list includes a functional language
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- Your function should return a boolean value indicating whether `"Elixir"` is a member of the list. Elixir [provides a function][in] to test list membership.
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[list]: https://elixir-lang.org/getting-started/basic-types.html#linked-lists
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[hd]: https://hexdocs.pm/elixir/Kernel.html#hd/1
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[tl]: https://hexdocs.pm/elixir/Kernel.html#tl/1
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[length]: https://hexdocs.pm/elixir/Kernel.html#length/1
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[in]: https://hexdocs.pm/elixir/Kernel.html#in/2
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