32 lines
1.3 KiB
Markdown
32 lines
1.3 KiB
Markdown
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# Hints
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## General
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- Read the official documentation for [ranges][range].
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## 1. Define the rank range
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- There is a [special operator][range-creation-operator] for creating ranges.
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## 2. Define the file range
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- There is a [special operator][range-creation-operator] for creating ranges.
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- There is a [special syntax][unicode-code-points] to write a character code point without explicitly knowing its value.
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## 3. Transform the rank range into a list of ranks
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- Ranges implement the `Enumerable` protocol.
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- There is a [built-in function][enum-to-list] to change an enumerable data structure to a list.
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## 4. Transform the file range into a list of files
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- Ranges implement the `Enumerable` protocol.
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- There is a [built-in function][enum-map] to change an enumerable data structure to a list while modifying its elements.
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- The [bitstring special form][bitstring-special-form] can be used to turn a code point into a string.
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[range]: https://hexdocs.pm/elixir/Range.html
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[range-creation-operator]: https://hexdocs.pm/elixir/Kernel.html#../2
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[unicode-code-points]: https://hexdocs.pm/elixir/syntax-reference.html#integers-in-other-bases-and-unicode-code-points
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[enum-to-list]: https://hexdocs.pm/elixir/Enum.html#to_list/1
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[enum-map]: https://hexdocs.pm/elixir/Enum.html#map/2
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[bitstring-special-form]: https://hexdocs.pm/elixir/Kernel.SpecialForms.html#%3C%3C%3E%3E/1
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