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-rw-r--r--exercises/strings/strings3.rs45
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diff --git a/exercises/strings/strings3.rs b/exercises/strings/strings3.rs
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--- a/exercises/strings/strings3.rs
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-// strings3.rs
-//
-// Execute `rustlings hint strings3` or use the `hint` watch subcommand for a
-// hint.
-
-// I AM NOT DONE
-
-fn trim_me(input: &str) -> String {
- // TODO: Remove whitespace from both ends of a string!
- ???
-}
-
-fn compose_me(input: &str) -> String {
- // TODO: Add " world!" to the string! There's multiple ways to do this!
- ???
-}
-
-fn replace_me(input: &str) -> String {
- // TODO: Replace "cars" in the string with "balloons"!
- ???
-}
-
-#[cfg(test)]
-mod tests {
- use super::*;
-
- #[test]
- fn trim_a_string() {
- assert_eq!(trim_me("Hello! "), "Hello!");
- assert_eq!(trim_me(" What's up!"), "What's up!");
- assert_eq!(trim_me(" Hola! "), "Hola!");
- }
-
- #[test]
- fn compose_a_string() {
- assert_eq!(compose_me("Hello"), "Hello world!");
- assert_eq!(compose_me("Goodbye"), "Goodbye world!");
- }
-
- #[test]
- fn replace_a_string() {
- assert_eq!(replace_me("I think cars are cool"), "I think balloons are cool");
- assert_eq!(replace_me("I love to look at cars"), "I love to look at balloons");
- }
-}