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elixir/kitchen-calculator/HINTS.md

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+# Hints
+
+## General
+
+- [Tuples][tuple-module] are data structures which are arranged in contiguous memory and can hold any data-type.
+- Atoms may be used to denote finite states, as this exercise uses `:cup`, `:fluid_ounce`, `:teaspoon`, `:tablespoon`, `:milliliter` to denote the units used.
+- You may use [`Kernel`][elem] or [`Tuple`][tuple-module] functions or pattern matching to manipulate the tuples.
+
+## 1. Get the numeric component from a volume-pair
+
+- Consider using [a `Kernel` module function][elem] to return the volume-pair's numeric component.
+
+## 2. Convert the volume-pair to milliliters
+
+- Use [multiple clause functions][multi-clause] and [pattern matching][pattern-matching] to reduce conditional control flow logic.
+- Implement the function for all units to milliliters, including milliliters to milliliters.
+
+## 3. Convert the milliliter volume-pair to another unit
+
+- Use [multiple clause functions][multi-clause] and [pattern matching][pattern-matching] to reduce conditional control flow logic.
+- Implement the function for all units to milliliters, including milliliters to milliliters.
+
+## 4. Convert from any unit to any unit
+
+- Reuse the functions already created to perform the conversion in the `convert/2` function.
+
+[elem]: https://hexdocs.pm/elixir/Kernel.html#elem/2
+[multi-clause]: https://elixir-lang.org/getting-started/modules-and-functions.html#named-functions
+[tuple-module]: https://hexdocs.pm/elixir/Tuple.html
+[pattern-matching]: https://medium.com/rebirth-delivery/how-to-use-elixir-pattern-matched-functions-arguments-a793733acc6d