jarjar/rustlings
1
0
Fork 0
mirror of https://github.com/rust-lang/rustlings.git synced 2026-01-12 21:59:18 +00:00
Code Issues Packages Projects Releases Wiki Activity

strings

Browse Source
This commit is contained in:
enforcer007 2022-11-13 13:23:53 +05:30
parent 3b06c0dd76
commit 1a3c8c40cf
3 changed files with 14 additions and 14 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
exercises/strings/strings1.rs
View File

@ -2,13 +2,11 @@
// Make me compile without changing the function signature! // Make me compile without changing the function signature!
// Execute `rustlings hint strings1` or use the `hint` watch subcommand for a hint. // Execute `rustlings hint strings1` or use the `hint` watch subcommand for a hint.
// I AM NOT DONE
fn main() { fn main() {
let answer = current_favorite_color(); let answer = current_favorite_color();
println!("My current favorite color is {}", answer); println!("My current favorite color is {}", answer);
} }
fn current_favorite_color() -> String { fn current_favorite_color() -> String {
"blue" "blue".into()
} }

4
exercises/strings/strings2.rs
View File

@ -2,11 +2,9 @@
// Make me compile without changing the function signature! // Make me compile without changing the function signature!
// Execute `rustlings hint strings2` or use the `hint` watch subcommand for a hint. // Execute `rustlings hint strings2` or use the `hint` watch subcommand for a hint.
// I AM NOT DONE
fn main() { fn main() {
let word = String::from("green"); // Try not changing this line :) let word = String::from("green"); // Try not changing this line :)
if is_a_color_word(word) { if is_a_color_word(&word) {
println!("That is a color word I know!"); println!("That is a color word I know!");
} else { } else {
println!("That is not a color word I know."); println!("That is not a color word I know.");

20
exercises/strings/strings3.rs
View File

@ -1,21 +1,19 @@
// strings3.rs // strings3.rs
// Execute `rustlings hint strings3` or use the `hint` watch subcommand for a hint. // Execute `rustlings hint strings3` or use the `hint` watch subcommand for a hint.
// I AM NOT DONE
fn trim_me(input: &str) -> String { fn trim_me(input: &str) -> String {
// TODO: Remove whitespace from both ends of a string! // TODO: Remove whitespace from the end of a string!
??? input.trim().into()
} }
fn compose_me(input: &str) -> String { fn compose_me(input: &str) -> String {
// TODO: Add " world!" to the string! There's multiple ways to do this! // TODO: Add " world!" to the string! There's multiple ways to do this!
??? format!("{} world!", input)
} }
fn replace_me(input: &str) -> String { fn replace_me(input: &str) -> String {
// TODO: Replace "cars" in the string with "balloons"! // TODO: Replace "cars" in the string with "balloons"!
??? input.replace("cars", "balloons")
} }
#[cfg(test)] #[cfg(test)]
@ -37,7 +35,13 @@ mod tests {
#[test] #[test]
fn replace_a_string() { fn replace_a_string() {
assert_eq!(replace_me("I think cars are cool"), "I think balloons are cool"); assert_eq!(
assert_eq!(replace_me("I love to look at cars"), "I love to look at balloons"); 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"
);
} }
} }