Spring Cleaning
10 Points
let-assertions
Instructions
Mika the events organiser has got a promotion at work, and as part of her new responsibilities she is in charge of the events database. She quickly noticed that a lot of the data is stored in ways that make it hard to work with, so you're teaming up to clean it up with a one-off script.
Because the script is only going to be run once, and you are confident about the structure of the data, you feel this is a good place to use Gleam's let assertions.
1. Extract errors
Each past event has a list of problems that occurred during the event. These have been stored as results, but they're always the Error variant.
Implement the extract_error function which takes a result that is expected to always be an Error and returns the contained error value.
extract_error(Error("Not enough coffee"))
// -> "Not enough coffee"2. Remove team prefix
Team names have been prefixed with the word "Team ", but this is not needed. Implement the remove_team_prefix function to remove the prefix from a team name.
remove_team_prefix("Team Turtle")
// -> "Turtle"3. Split region and team
Each event is run by a team, and each team belongs to a region. In the database they are stored in a single string, separated by a comma.
Implement the split_region_and_team function to split the string into a tuple of two strings, one for the region and one for the team. The prefix "Team " should be removed from the team name.
split_region_and_team("East,Team Orange")
// -> #("East", "Orange")Spring Cleaning
10 Points
let-assertions
Instructions
Mika the events organiser has got a promotion at work, and as part of her new responsibilities she is in charge of the events database. She quickly noticed that a lot of the data is stored in ways that make it hard to work with, so you're teaming up to clean it up with a one-off script.
Because the script is only going to be run once, and you are confident about the structure of the data, you feel this is a good place to use Gleam's let assertions.
1. Extract errors
Each past event has a list of problems that occurred during the event. These have been stored as results, but they're always the Error variant.
Implement the extract_error function which takes a result that is expected to always be an Error and returns the contained error value.
extract_error(Error("Not enough coffee"))
// -> "Not enough coffee"2. Remove team prefix
Team names have been prefixed with the word "Team ", but this is not needed. Implement the remove_team_prefix function to remove the prefix from a team name.
remove_team_prefix("Team Turtle")
// -> "Turtle"3. Split region and team
Each event is run by a team, and each team belongs to a region. In the database they are stored in a single string, separated by a comma.
Implement the split_region_and_team function to split the string into a tuple of two strings, one for the region and one for the team. The prefix "Team " should be removed from the team name.
split_region_and_team("East,Team Orange")
// -> #("East", "Orange")