Ejercicios 40/94
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@ -1,11 +1,12 @@
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// enums1.rs
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// No hints this time! ;)
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// I AM NOT DONE
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#[derive(Debug)]
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enum Message {
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// TODO: define a few types of messages as used below
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Quit,
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Echo,
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Move,
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ChangeColor,
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}
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fn main() {
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// enums2.rs
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// Execute `rustlings hint enums2` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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#[derive(Debug)]
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enum Message {
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// TODO: define the different variants used below
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Move {x: i32, y: i32},
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Echo(String),
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ChangeColor(u32, u32, u32),
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Quit
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}
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impl Message {
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@ -2,10 +2,11 @@
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// Address all the TODOs to make the tests pass!
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// Execute `rustlings hint enums3` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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enum Message {
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// TODO: implement the message variant types based on their usage below
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Move(Point),
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Echo(String),
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ChangeColor(u8, u8, u8),
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Quit,
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}
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struct Point {
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@ -37,8 +38,13 @@ impl State {
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}
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fn process(&mut self, message: Message) {
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// TODO: create a match expression to process the different message variants
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// Remember: When passing a tuple as a function argument, you'll need extra parentheses: fn function((t, u, p, l, e))
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match message {
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Message::Quit => self.quit(),
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Message::Echo(string) => self.echo(string),
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Message::Move(point) => self.move_position(point),
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Message::ChangeColor(r, g, b) => self.change_color((r, g, b)),
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}
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}
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}
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@ -2,13 +2,11 @@
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// Make me compile without changing the function signature!
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// Execute `rustlings hint strings1` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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fn main() {
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let answer = current_favorite_color();
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println!("My current favorite color is {}", answer);
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}
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fn current_favorite_color() -> String {
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"blue"
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String::from("blue")
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}
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@ -2,11 +2,9 @@
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// Make me compile without changing the function signature!
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// Execute `rustlings hint strings2` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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fn main() {
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let word = String::from("green"); // Try not changing this line :)
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if is_a_color_word(word) {
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if is_a_color_word(&word) {
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println!("That is a color word I know!");
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} else {
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println!("That is not a color word I know.");
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@ -1,21 +1,16 @@
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// strings3.rs
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// Execute `rustlings hint strings3` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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fn trim_me(input: &str) -> String {
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// TODO: Remove whitespace from both ends of a string!
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???
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input.trim().to_string()
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}
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fn compose_me(input: &str) -> String {
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// TODO: Add " world!" to the string! There's multiple ways to do this!
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???
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format!("{}{}", input, " world!")
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}
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fn replace_me(input: &str) -> String {
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// TODO: Replace "cars" in the string with "balloons"!
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???
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input.replace("cars", "balloons")
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}
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#[cfg(test)]
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@ -6,8 +6,6 @@
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// before the parentheses on each line. If you're right, it will compile!
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// No hints this time!
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// I AM NOT DONE
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fn string_slice(arg: &str) {
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println!("{}", arg);
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}
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@ -16,14 +14,14 @@ fn string(arg: String) {
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}
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fn main() {
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???("blue");
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???("red".to_string());
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???(String::from("hi"));
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???("rust is fun!".to_owned());
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???("nice weather".into());
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???(format!("Interpolation {}", "Station"));
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???(&String::from("abc")[0..1]);
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???(" hello there ".trim());
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???("Happy Monday!".to_string().replace("Mon", "Tues"));
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???("mY sHiFt KeY iS sTiCkY".to_lowercase());
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string_slice("blue");
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string("red".to_string());
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string(String::from("hi"));
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string("rust is fun!".to_owned());
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string("nice weather".into());
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string(format!("Interpolation {}", "Station"));
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string_slice(&String::from("abc")[0..1]);
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string_slice(" hello there ".trim());
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string("Happy Monday!".to_string().replace("Mon", "Tues"));
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string("mY sHiFt KeY iS sTiCkY".to_lowercase());
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}
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@ -4,8 +4,6 @@
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// Make the code compile and the tests pass!
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// Execute `rustlings hint structs3` or use the `hint` watch subcommand for a hint.
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// I AM NOT DONE
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#[derive(Debug)]
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struct Package {
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sender_country: String,
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}
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}
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fn is_international(&self) -> ??? {
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// Something goes here...
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fn is_international(&self) -> bool {
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if self.sender_country == self.recipient_country { false } else { true }
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}
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fn get_fees(&self, cents_per_gram: i32) -> ??? {
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// Something goes here...
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fn get_fees(&self, cents_per_gram: i32) -> i32 {
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self.weight_in_grams * cents_per_gram
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}
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}
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