summaryrefslogtreecommitdiff
path: root/rustlings/solutions/quizzes/quiz2.rs
diff options
context:
space:
mode:
authorHunter Kvalevog <hunter@kvog.sh>2026-10-02 21:53:51 -0500
committerHunter Kvalevog <hunter@kvog.sh>2026-10-02 21:53:51 -0500
commit4dfc11d74ab02ac5765ae5d08fb750c91f4744b4 (patch)
tree17ba62056d6b691dd0217b0e8f1b3a5826dce0f6 /rustlings/solutions/quizzes/quiz2.rs
parent02d8f1c62896576e1266553a56980eddbc2a88d7 (diff)
rustlings: move to rust/
Diffstat (limited to 'rustlings/solutions/quizzes/quiz2.rs')
-rw-r--r--rustlings/solutions/quizzes/quiz2.rs90
1 files changed, 0 insertions, 90 deletions
diff --git a/rustlings/solutions/quizzes/quiz2.rs b/rustlings/solutions/quizzes/quiz2.rs
deleted file mode 100644
index 8b073b1..0000000
--- a/rustlings/solutions/quizzes/quiz2.rs
+++ /dev/null
@@ -1,90 +0,0 @@
-// Let's build a little machine in the form of a function. As input, we're going
-// to give a list of strings and commands. These commands determine what action
-// is going to be applied to the string. It can either be:
-// - Uppercase the string
-// - Trim the string
-// - Append "bar" to the string a specified amount of times
-//
-// The exact form of this will be:
-// - The input is going to be a vector of 2-length tuples,
-// the first element is the string, the second one is the command.
-// - The output element is going to be a vector of strings.
-
-enum Command {
- Uppercase,
- Trim,
- Append(usize),
-}
-
-mod my_module {
- use super::Command;
-
- // The solution with a loop. Check out `transformer_iter` for a version
- // with iterators.
- pub fn transformer(input: Vec<(String, Command)>) -> Vec<String> {
- let mut output = Vec::new();
-
- for (string, command) in input {
- // Create the new string.
- let new_string = match command {
- Command::Uppercase => string.to_uppercase(),
- Command::Trim => string.trim().to_string(),
- Command::Append(n) => string + &"bar".repeat(n),
- };
-
- // Push the new string to the output vector.
- output.push(new_string);
- }
-
- output
- }
-
- // Equivalent to `transform` but uses an iterator instead of a loop for
- // comparison. Don't worry, we will practice iterators later ;)
- pub fn transformer_iter(input: Vec<(String, Command)>) -> Vec<String> {
- input
- .into_iter()
- .map(|(string, command)| match command {
- Command::Uppercase => string.to_uppercase(),
- Command::Trim => string.trim().to_string(),
- Command::Append(n) => string + &"bar".repeat(n),
- })
- .collect()
- }
-}
-
-fn main() {
- // You can optionally experiment here.
-}
-
-#[cfg(test)]
-mod tests {
- // Import `transformer`.
- use super::my_module::transformer;
-
- use super::Command;
- use super::my_module::transformer_iter;
-
- #[test]
- fn it_works() {
- for transformer in [transformer, transformer_iter] {
- let input = vec![
- ("hello".to_string(), Command::Uppercase),
- (" all roads lead to rome! ".to_string(), Command::Trim),
- ("foo".to_string(), Command::Append(1)),
- ("bar".to_string(), Command::Append(5)),
- ];
- let output = transformer(input);
-
- assert_eq!(
- output,
- [
- "HELLO",
- "all roads lead to rome!",
- "foobar",
- "barbarbarbarbarbar",
- ]
- );
- }
- }
-}