exercism/elixir/high-score/HINTS.md

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2023-12-18 09:03:01 +00:00
# Hints
## General
- A [map][maps] is an associative data structure of key-value pairs.
- Elixir offers [many useful Map module functions in the standard library][map-module].
## 1. Define a new high score map
- It should return an empty [map][maps].
- [Map module][map-module] functions or literal forms can be useful.
## 2. Add players to the high score map
- The resulting map should be returned.
- [Map module][map-module] contains functions useful for manipulating maps. [One of them][map-put] puts a value in a map under a given key.
## 3. Remove players from the score map
- The resulting map should be returned.
- [Map module][map-module] contains functions useful for manipulating maps. [One of them][map-delete] deletes a key from a map.
## 4. Reset a player's score
- The resulting map should be returned with the player's score reset to an initial value.
- [Map module][map-module] contains functions useful for manipulating maps. [One of them][map-put] puts a value in a map under a given key.
## 5. Update a player's score
- The resulting map should be returned with the player's updated score.
- [Map module][map-module] contains functions useful for manipulating maps. [One of them][map-update] updates a value in a map under a given key.
## 6. Get a list of players
- [Map module][map-module] contains functions useful for manipulating maps. [One of them][map-keys] returns a list of all keys in a map.
[maps]: https://elixir-lang.org/getting-started/keywords-and-maps.html#maps
[map-module]: https://hexdocs.pm/elixir/Map.html
[map-put]: https://hexdocs.pm/elixir/Map.html#put/3
[map-delete]: https://hexdocs.pm/elixir/Map.html#delete/2
[map-update]: https://hexdocs.pm/elixir/Map.html#update/4
[map-keys]: https://hexdocs.pm/elixir/Map.html#keys/1