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Kevin Bi
parent
2398f378b0
commit
a38bfdc8b8
194
Cargo.lock
generated
194
Cargo.lock
generated
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|
||||
checksum = "9337591893a19b88d8d87f2cec1e73fad5cdfd10e5a6f349f498ad6ea2ffb1e3"
|
||||
|
||||
[[package]]
|
||||
name = "unicode-xid"
|
||||
version = "0.2.2"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "8ccb82d61f80a663efe1f787a51b16b5a51e3314d6ac365b08639f52387b33f3"
|
||||
checksum = "c0edd1e5b14653f783770bce4a4dabb4a5108a5370a5f5d8cfe8710c361f6c8b"
|
||||
|
||||
[[package]]
|
||||
name = "walkdir"
|
||||
@ -635,6 +628,49 @@ version = "0.4.0"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "712e227841d057c1ee1cd2fb22fa7e5a5461ae8e48fa2ca79ec42cfc1931183f"
|
||||
|
||||
[[package]]
|
||||
name = "windows-sys"
|
||||
version = "0.36.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "ea04155a16a59f9eab786fe12a4a450e75cdb175f9e0d80da1e17db09f55b8d2"
|
||||
dependencies = [
|
||||
"windows_aarch64_msvc",
|
||||
"windows_i686_gnu",
|
||||
"windows_i686_msvc",
|
||||
"windows_x86_64_gnu",
|
||||
"windows_x86_64_msvc",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "windows_aarch64_msvc"
|
||||
version = "0.36.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "9bb8c3fd39ade2d67e9874ac4f3db21f0d710bee00fe7cab16949ec184eeaa47"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_gnu"
|
||||
version = "0.36.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "180e6ccf01daf4c426b846dfc66db1fc518f074baa793aa7d9b9aaeffad6a3b6"
|
||||
|
||||
[[package]]
|
||||
name = "windows_i686_msvc"
|
||||
version = "0.36.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "e2e7917148b2812d1eeafaeb22a97e4813dfa60a3f8f78ebe204bcc88f12f024"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_gnu"
|
||||
version = "0.36.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "4dcd171b8776c41b97521e5da127a2d86ad280114807d0b2ab1e462bc764d9e1"
|
||||
|
||||
[[package]]
|
||||
name = "windows_x86_64_msvc"
|
||||
version = "0.36.1"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "c811ca4a8c853ef420abd8592ba53ddbbac90410fab6903b3e79972a631f7680"
|
||||
|
||||
[[package]]
|
||||
name = "ws2_32-sys"
|
||||
version = "0.2.1"
|
||||
|
||||
@ -1,11 +1,12 @@
|
||||
// enums1.rs
|
||||
// No hints this time! ;)
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
#[derive(Debug)]
|
||||
enum Message {
|
||||
// TODO: define a few types of messages as used below
|
||||
Quit,
|
||||
Echo,
|
||||
Move,
|
||||
ChangeColor,
|
||||
}
|
||||
|
||||
fn main() {
|
||||
|
||||
@ -1,11 +1,13 @@
|
||||
// enums2.rs
|
||||
// Execute `rustlings hint enums2` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
#[derive(Debug)]
|
||||
enum Message {
|
||||
// TODO: define the different variants used below
|
||||
Move { x: i32, y: i32 },
|
||||
Echo(String),
|
||||
ChangeColor(i32, i32, i32),
|
||||
Quit,
|
||||
}
|
||||
|
||||
impl Message {
|
||||
|
||||
@ -2,17 +2,19 @@
|
||||
// Address all the TODOs to make the tests pass!
|
||||
// Execute `rustlings hint enums3` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
enum Message {
|
||||
// TODO: implement the message variant types based on their usage below
|
||||
}
|
||||
|
||||
struct Point {
|
||||
x: u8,
|
||||
y: u8,
|
||||
}
|
||||
|
||||
enum Message {
|
||||
// TODO: implement the message variant types based on their usage below
|
||||
Move(Point),
|
||||
Echo(String),
|
||||
ChangeColor((u8, u8, u8)),
|
||||
Quit,
|
||||
}
|
||||
|
||||
struct State {
|
||||
color: (u8, u8, u8),
|
||||
position: Point,
|
||||
@ -38,6 +40,18 @@ impl State {
|
||||
|
||||
fn process(&mut self, message: Message) {
|
||||
// TODO: create a match expression to process the different message variants
|
||||
match message {
|
||||
Message::ChangeColor(color) => {
|
||||
self.change_color(color);
|
||||
}
|
||||
Message::Move(point) => {
|
||||
self.move_position(point);
|
||||
}
|
||||
Message::Echo(s) => {}
|
||||
Message::Quit => {
|
||||
self.quit();
|
||||
}
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -1,7 +1,9 @@
|
||||
// functions1.rs
|
||||
// Execute `rustlings hint functions1` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
fn call_me() {
|
||||
println!("Hello world!");
|
||||
}
|
||||
|
||||
fn main() {
|
||||
call_me();
|
||||
|
||||
@ -1,13 +1,11 @@
|
||||
// functions2.rs
|
||||
// Execute `rustlings hint functions2` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn main() {
|
||||
call_me(3);
|
||||
}
|
||||
|
||||
fn call_me(num:) {
|
||||
fn call_me(num: i32) {
|
||||
for i in 0..num {
|
||||
println!("Ring! Call number {}", i + 1);
|
||||
}
|
||||
|
||||
@ -1,10 +1,8 @@
|
||||
// functions3.rs
|
||||
// Execute `rustlings hint functions3` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn main() {
|
||||
call_me();
|
||||
call_me(5);
|
||||
}
|
||||
|
||||
fn call_me(num: u32) {
|
||||
|
||||
@ -7,14 +7,12 @@
|
||||
// in the signatures for now. If anything, this is a good way to peek ahead
|
||||
// to future exercises!)
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn main() {
|
||||
let original_price = 51;
|
||||
println!("Your sale price is {}", sale_price(original_price));
|
||||
}
|
||||
|
||||
fn sale_price(price: i32) -> {
|
||||
fn sale_price(price: i32) -> i32 {
|
||||
if is_even(price) {
|
||||
price - 10
|
||||
} else {
|
||||
|
||||
@ -1,13 +1,11 @@
|
||||
// functions5.rs
|
||||
// Execute `rustlings hint functions5` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn main() {
|
||||
let answer = square(3);
|
||||
println!("The square of 3 is {}", answer);
|
||||
}
|
||||
|
||||
fn square(num: i32) -> i32 {
|
||||
num * num;
|
||||
num * num
|
||||
}
|
||||
|
||||
@ -10,17 +10,17 @@
|
||||
//
|
||||
// Execute `rustlings hint hashmaps1` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
use std::collections::HashMap;
|
||||
|
||||
fn fruit_basket() -> HashMap<String, u32> {
|
||||
let mut basket = // TODO: declare your hash map here.
|
||||
let mut basket = HashMap::new();
|
||||
|
||||
// Two bananas are already given for you :)
|
||||
basket.insert(String::from("banana"), 2);
|
||||
|
||||
// TODO: Put more fruits in your basket here.
|
||||
basket.insert(String::from("apple"), 3);
|
||||
basket.insert(String::from("orange"), 4);
|
||||
|
||||
basket
|
||||
}
|
||||
|
||||
@ -11,8 +11,6 @@
|
||||
//
|
||||
// Execute `rustlings hint hashmaps2` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
use std::collections::HashMap;
|
||||
|
||||
#[derive(Hash, PartialEq, Eq)]
|
||||
@ -34,9 +32,9 @@ fn fruit_basket(basket: &mut HashMap<Fruit, u32>) {
|
||||
];
|
||||
|
||||
for fruit in fruit_kinds {
|
||||
// TODO: Put new fruits if not already present. Note that you
|
||||
// are not allowed to put any type of fruit that's already
|
||||
// present!
|
||||
if !basket.contains_key(&fruit) {
|
||||
basket.insert(fruit, 10);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -14,8 +14,6 @@
|
||||
|
||||
// Execute `rustlings hint hashmaps3` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
use std::collections::HashMap;
|
||||
|
||||
// A structure to store team name and its goal details.
|
||||
@ -25,6 +23,26 @@ struct Team {
|
||||
goals_conceded: u8,
|
||||
}
|
||||
|
||||
fn get_updated_team(
|
||||
scores: &HashMap<String, Team>,
|
||||
team_name: &str,
|
||||
goals_scored: u8,
|
||||
goals_against: u8,
|
||||
) -> Team {
|
||||
match scores.get(team_name) {
|
||||
Some(team) => Team {
|
||||
name: team_name.to_string(),
|
||||
goals_scored: team.goals_scored + goals_scored,
|
||||
goals_conceded: team.goals_conceded + goals_against,
|
||||
},
|
||||
None => Team {
|
||||
name: team_name.to_string(),
|
||||
goals_scored: goals_scored,
|
||||
goals_conceded: goals_against,
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
fn build_scores_table(results: String) -> HashMap<String, Team> {
|
||||
// The name of the team is the key and its associated struct is the value.
|
||||
let mut scores: HashMap<String, Team> = HashMap::new();
|
||||
@ -35,11 +53,16 @@ fn build_scores_table(results: String) -> HashMap<String, Team> {
|
||||
let team_1_score: u8 = v[2].parse().unwrap();
|
||||
let team_2_name = v[1].to_string();
|
||||
let team_2_score: u8 = v[3].parse().unwrap();
|
||||
// TODO: Populate the scores table with details extracted from the
|
||||
// current line. Keep in mind that goals scored by team_1
|
||||
// will be number of goals conceded from team_2, and similarly
|
||||
// goals scored by team_2 will be the number of goals conceded by
|
||||
// team_1.
|
||||
|
||||
scores.insert(
|
||||
team_1_name.to_string(),
|
||||
get_updated_team(&scores, &team_1_name, team_1_score, team_2_score),
|
||||
);
|
||||
|
||||
scores.insert(
|
||||
team_2_name.to_string(),
|
||||
get_updated_team(&scores, &team_2_name, team_2_score, team_1_score),
|
||||
);
|
||||
}
|
||||
scores
|
||||
}
|
||||
|
||||
@ -1,13 +1,17 @@
|
||||
// if1.rs
|
||||
// Execute `rustlings hint if1` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
pub fn bigger(a: i32, b: i32) -> i32 {
|
||||
// Complete this function to return the bigger number!
|
||||
// Do not use:
|
||||
// - another function call
|
||||
// - additional variables
|
||||
|
||||
if (a > b) {
|
||||
a
|
||||
} else {
|
||||
b
|
||||
}
|
||||
}
|
||||
|
||||
// Don't mind this for now :)
|
||||
|
||||
@ -4,13 +4,13 @@
|
||||
// Step 2: Get the bar_for_fuzz and default_to_baz tests passing!
|
||||
// Execute `rustlings hint if2` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
pub fn foo_if_fizz(fizzish: &str) -> &str {
|
||||
if fizzish == "fizz" {
|
||||
"foo"
|
||||
} else if (fizzish == "fuzz") {
|
||||
"bar"
|
||||
} else {
|
||||
1
|
||||
"baz"
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -9,8 +9,6 @@
|
||||
// when you change one of the lines below! Try adding a `println!` line, or try changing
|
||||
// what it outputs in your terminal. Try removing a semicolon and see what happens!
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn main() {
|
||||
println!("Hello and");
|
||||
println!(r#" welcome to... "#);
|
||||
@ -26,5 +24,7 @@ fn main() {
|
||||
println!("solve the exercises. Good luck!");
|
||||
println!();
|
||||
println!("The source for this exercise is in `exercises/intro/intro1.rs`. Have a look!");
|
||||
println!("Going forward, the source of the exercises will always be in the success/failure output.");
|
||||
println!(
|
||||
"Going forward, the source of the exercises will always be in the success/failure output."
|
||||
);
|
||||
}
|
||||
|
||||
@ -2,8 +2,6 @@
|
||||
// Make the code print a greeting to the world.
|
||||
// Execute `rustlings hint intro2` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn main() {
|
||||
println!("Hello {}!");
|
||||
println!("Hello {}!", "world");
|
||||
}
|
||||
|
||||
@ -1,15 +1,13 @@
|
||||
// modules1.rs
|
||||
// Execute `rustlings hint modules1` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
mod sausage_factory {
|
||||
// Don't let anybody outside of this module see this!
|
||||
fn get_secret_recipe() -> String {
|
||||
String::from("Ginger")
|
||||
}
|
||||
|
||||
fn make_sausage() {
|
||||
pub fn make_sausage() {
|
||||
get_secret_recipe();
|
||||
println!("sausage!");
|
||||
}
|
||||
|
||||
@ -3,12 +3,10 @@
|
||||
// 'use' and 'as' keywords. Fix these 'use' statements to make the code compile.
|
||||
// Execute `rustlings hint modules2` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
mod delicious_snacks {
|
||||
// TODO: Fix these use statements
|
||||
use self::fruits::PEAR as ???
|
||||
use self::veggies::CUCUMBER as ???
|
||||
pub use self::fruits::PEAR as fruit;
|
||||
pub use self::veggies::CUCUMBER as veggie;
|
||||
|
||||
mod fruits {
|
||||
pub const PEAR: &'static str = "Pear";
|
||||
|
||||
@ -5,10 +5,9 @@
|
||||
// from the std::time module. Bonus style points if you can do it with one line!
|
||||
// Execute `rustlings hint modules3` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
// TODO: Complete this use statement
|
||||
use ???
|
||||
use std::time::SystemTime;
|
||||
use std::time::UNIX_EPOCH;
|
||||
|
||||
fn main() {
|
||||
match SystemTime::now().duration_since(UNIX_EPOCH) {
|
||||
|
||||
@ -1,12 +1,10 @@
|
||||
// move_semantics1.rs
|
||||
// Execute `rustlings hint move_semantics1` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn main() {
|
||||
let vec0 = Vec::new();
|
||||
|
||||
let vec1 = fill_vec(vec0);
|
||||
let mut vec1 = fill_vec(vec0);
|
||||
|
||||
println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
|
||||
|
||||
|
||||
@ -2,12 +2,10 @@
|
||||
// Make me compile without changing line 13 or moving line 10!
|
||||
// Execute `rustlings hint move_semantics2` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn main() {
|
||||
let vec0 = Vec::new();
|
||||
|
||||
let mut vec1 = fill_vec(vec0);
|
||||
let mut vec1 = fill_vec(&vec0);
|
||||
|
||||
// Do not change the following line!
|
||||
println!("{} has length {} content `{:?}`", "vec0", vec0.len(), vec0);
|
||||
@ -17,8 +15,8 @@ fn main() {
|
||||
println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
|
||||
}
|
||||
|
||||
fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
|
||||
let mut vec = vec;
|
||||
fn fill_vec(vec: &Vec<i32>) -> Vec<i32> {
|
||||
let mut vec = vec.to_vec();
|
||||
|
||||
vec.push(22);
|
||||
vec.push(44);
|
||||
|
||||
@ -3,8 +3,6 @@
|
||||
// (no lines with multiple semicolons necessary!)
|
||||
// Execute `rustlings hint move_semantics3` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn main() {
|
||||
let vec0 = Vec::new();
|
||||
|
||||
@ -17,7 +15,7 @@ fn main() {
|
||||
println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
|
||||
}
|
||||
|
||||
fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
|
||||
fn fill_vec(mut vec: Vec<i32>) -> Vec<i32> {
|
||||
vec.push(22);
|
||||
vec.push(44);
|
||||
vec.push(66);
|
||||
|
||||
@ -4,12 +4,8 @@
|
||||
// function.
|
||||
// Execute `rustlings hint move_semantics4` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn main() {
|
||||
let vec0 = Vec::new();
|
||||
|
||||
let mut vec1 = fill_vec(vec0);
|
||||
let mut vec1 = fill_vec();
|
||||
|
||||
println!("{} has length {} content `{:?}`", "vec1", vec1.len(), vec1);
|
||||
|
||||
@ -20,7 +16,7 @@ fn main() {
|
||||
|
||||
// `fill_vec()` no longer takes `vec: Vec<i32>` as argument
|
||||
fn fill_vec() -> Vec<i32> {
|
||||
let mut vec = vec;
|
||||
let mut vec = Vec::new();
|
||||
|
||||
vec.push(22);
|
||||
vec.push(44);
|
||||
|
||||
@ -3,13 +3,11 @@
|
||||
// adding, changing or removing any of them.
|
||||
// Execute `rustlings hint move_semantics5` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn main() {
|
||||
let mut x = 100;
|
||||
let y = &mut x;
|
||||
let z = &mut x;
|
||||
*y += 100;
|
||||
let z = &mut x;
|
||||
*z += 1000;
|
||||
assert_eq!(x, 1200);
|
||||
}
|
||||
|
||||
@ -2,24 +2,22 @@
|
||||
// Execute `rustlings hint move_semantics6` or use the `hint` watch subcommand for a hint.
|
||||
// You can't change anything except adding or removing references.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn main() {
|
||||
let data = "Rust is great!".to_string();
|
||||
|
||||
get_char(data);
|
||||
get_char(&data);
|
||||
|
||||
string_uppercase(&data);
|
||||
string_uppercase(data);
|
||||
}
|
||||
|
||||
// Should not take ownership
|
||||
fn get_char(data: String) -> char {
|
||||
fn get_char(data: &String) -> char {
|
||||
data.chars().last().unwrap()
|
||||
}
|
||||
|
||||
// Should take ownership
|
||||
fn string_uppercase(mut data: &String) {
|
||||
data = &data.to_uppercase();
|
||||
fn string_uppercase(mut data: String) {
|
||||
data = data.to_uppercase();
|
||||
|
||||
println!("{}", data);
|
||||
}
|
||||
|
||||
@ -2,8 +2,6 @@
|
||||
// Fill in the rest of the line that has code missing!
|
||||
// No hints, there's no tricks, just get used to typing these :)
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn main() {
|
||||
// Booleans (`bool`)
|
||||
|
||||
@ -12,7 +10,7 @@ fn main() {
|
||||
println!("Good morning!");
|
||||
}
|
||||
|
||||
let // Finish the rest of this line like the example! Or make it be false!
|
||||
let is_evening = false;
|
||||
if is_evening {
|
||||
println!("Good evening!");
|
||||
}
|
||||
|
||||
@ -2,8 +2,6 @@
|
||||
// Fill in the rest of the line that has code missing!
|
||||
// No hints, there's no tricks, just get used to typing these :)
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn main() {
|
||||
// Characters (`char`)
|
||||
|
||||
@ -18,9 +16,7 @@ fn main() {
|
||||
println!("Neither alphabetic nor numeric!");
|
||||
}
|
||||
|
||||
let // Finish this line like the example! What's your favorite character?
|
||||
// Try a letter, try a number, try a special character, try a character
|
||||
// from a different language than your own, try an emoji!
|
||||
let your_character = 'a';
|
||||
if your_character.is_alphabetic() {
|
||||
println!("Alphabetical!");
|
||||
} else if your_character.is_numeric() {
|
||||
|
||||
@ -2,10 +2,8 @@
|
||||
// Create an array with at least 100 elements in it where the ??? is.
|
||||
// Execute `rustlings hint primitive_types3` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn main() {
|
||||
let a = ???
|
||||
let a = [1; 110];
|
||||
|
||||
if a.len() >= 100 {
|
||||
println!("Wow, that's a big array!");
|
||||
|
||||
@ -2,13 +2,11 @@
|
||||
// Get a slice out of Array a where the ??? is so that the test passes.
|
||||
// Execute `rustlings hint primitive_types4` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
#[test]
|
||||
fn slice_out_of_array() {
|
||||
let a = [1, 2, 3, 4, 5];
|
||||
|
||||
let nice_slice = ???
|
||||
let nice_slice = &a[1..4];
|
||||
|
||||
assert_eq!([2, 3, 4], nice_slice)
|
||||
}
|
||||
|
||||
@ -2,11 +2,9 @@
|
||||
// Destructure the `cat` tuple so that the println will work.
|
||||
// Execute `rustlings hint primitive_types5` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn main() {
|
||||
let cat = ("Furry McFurson", 3.5);
|
||||
let /* your pattern here */ = cat;
|
||||
let (name, age) = cat;
|
||||
|
||||
println!("{} is {} years old.", name, age);
|
||||
}
|
||||
|
||||
@ -3,14 +3,11 @@
|
||||
// You can put the expression for the second element where ??? is so that the test passes.
|
||||
// Execute `rustlings hint primitive_types6` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
#[test]
|
||||
fn indexing_tuple() {
|
||||
let numbers = (1, 2, 3);
|
||||
// Replace below ??? with the tuple indexing syntax.
|
||||
let second = ???;
|
||||
let second = numbers.1;
|
||||
|
||||
assert_eq!(2, second,
|
||||
"This is not the 2nd number in the tuple!")
|
||||
assert_eq!(2, second, "This is not the 2nd number in the tuple!")
|
||||
}
|
||||
|
||||
@ -10,10 +10,14 @@
|
||||
// Write a function that calculates the price of an order of apples given
|
||||
// the quantity bought. No hints this time!
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
// Put your function here!
|
||||
// fn calculate_price_of_apples {
|
||||
fn calculate_price_of_apples(apples: i32) -> i32 {
|
||||
if (apples > 40) {
|
||||
apples
|
||||
} else {
|
||||
apples * 2
|
||||
}
|
||||
}
|
||||
|
||||
// Don't modify this function!
|
||||
#[test]
|
||||
|
||||
@ -2,13 +2,11 @@
|
||||
// Make me compile without changing the function signature!
|
||||
// Execute `rustlings hint strings1` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn main() {
|
||||
let answer = current_favorite_color();
|
||||
println!("My current favorite color is {}", answer);
|
||||
}
|
||||
|
||||
fn current_favorite_color() -> String {
|
||||
"blue"
|
||||
"blue".to_string()
|
||||
}
|
||||
|
||||
@ -2,11 +2,9 @@
|
||||
// Make me compile without changing the function signature!
|
||||
// Execute `rustlings hint strings2` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn main() {
|
||||
let word = String::from("green"); // Try not changing this line :)
|
||||
if is_a_color_word(word) {
|
||||
if is_a_color_word(word.as_str()) {
|
||||
println!("That is a color word I know!");
|
||||
} else {
|
||||
println!("That is not a color word I know.");
|
||||
|
||||
@ -1,21 +1,19 @@
|
||||
// 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!
|
||||
???
|
||||
input.trim().to_string()
|
||||
}
|
||||
|
||||
fn compose_me(input: &str) -> String {
|
||||
// TODO: Add " world!" to the string! There's multiple ways to do this!
|
||||
???
|
||||
String::from(input.to_owned() + " world!")
|
||||
}
|
||||
|
||||
fn replace_me(input: &str) -> String {
|
||||
// TODO: Replace "cars" in the string with "balloons"!
|
||||
???
|
||||
input.replace("cars", "balloons").to_string()
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
@ -37,7 +35,13 @@ mod tests {
|
||||
|
||||
#[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");
|
||||
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"
|
||||
);
|
||||
}
|
||||
}
|
||||
|
||||
@ -6,8 +6,6 @@
|
||||
// before the parentheses on each line. If you're right, it will compile!
|
||||
// No hints this time!
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn string_slice(arg: &str) {
|
||||
println!("{}", arg);
|
||||
}
|
||||
@ -16,14 +14,14 @@ fn string(arg: String) {
|
||||
}
|
||||
|
||||
fn main() {
|
||||
???("blue");
|
||||
???("red".to_string());
|
||||
???(String::from("hi"));
|
||||
???("rust is fun!".to_owned());
|
||||
???("nice weather".into());
|
||||
???(format!("Interpolation {}", "Station"));
|
||||
???(&String::from("abc")[0..1]);
|
||||
???(" hello there ".trim());
|
||||
???("Happy Monday!".to_string().replace("Mon", "Tues"));
|
||||
???("mY sHiFt KeY iS sTiCkY".to_lowercase());
|
||||
string_slice("blue");
|
||||
string("red".to_string());
|
||||
string(String::from("hi"));
|
||||
string("rust is fun!".to_owned());
|
||||
string("nice weather".into());
|
||||
string(format!("Interpolation {}", "Station"));
|
||||
string_slice(&String::from("abc")[0..1]);
|
||||
string_slice(" hello there ".trim());
|
||||
string("Happy Monday!".to_string().replace("Mon", "Tues"));
|
||||
string("mY sHiFt KeY iS sTiCkY".to_lowercase());
|
||||
}
|
||||
|
||||
@ -2,13 +2,14 @@
|
||||
// Address all the TODOs to make the tests pass!
|
||||
// Execute `rustlings hint structs1` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
struct ColorClassicStruct {
|
||||
// TODO: Something goes here
|
||||
red: i32,
|
||||
green: i32,
|
||||
blue: i32,
|
||||
}
|
||||
|
||||
struct ColorTupleStruct(/* TODO: Something goes here */);
|
||||
struct ColorTupleStruct(i32, i32, i32);
|
||||
|
||||
#[derive(Debug)]
|
||||
struct UnitLikeStruct;
|
||||
@ -20,7 +21,11 @@ mod tests {
|
||||
#[test]
|
||||
fn classic_c_structs() {
|
||||
// TODO: Instantiate a classic c struct!
|
||||
// let green =
|
||||
let green = ColorClassicStruct {
|
||||
red: 0,
|
||||
green: 255,
|
||||
blue: 0,
|
||||
};
|
||||
|
||||
assert_eq!(green.red, 0);
|
||||
assert_eq!(green.green, 255);
|
||||
@ -30,7 +35,7 @@ mod tests {
|
||||
#[test]
|
||||
fn tuple_structs() {
|
||||
// TODO: Instantiate a tuple struct!
|
||||
// let green =
|
||||
let green = ColorTupleStruct(0, 255, 0);
|
||||
|
||||
assert_eq!(green.0, 0);
|
||||
assert_eq!(green.1, 255);
|
||||
@ -40,7 +45,7 @@ mod tests {
|
||||
#[test]
|
||||
fn unit_structs() {
|
||||
// TODO: Instantiate a unit-like struct!
|
||||
// let unit_like_struct =
|
||||
let unit_like_struct = UnitLikeStruct;
|
||||
let message = format!("{:?}s are fun!", unit_like_struct);
|
||||
|
||||
assert_eq!(message, "UnitLikeStructs are fun!");
|
||||
|
||||
@ -2,8 +2,6 @@
|
||||
// Address all the TODOs to make the tests pass!
|
||||
// Execute `rustlings hint structs2` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
#[derive(Debug)]
|
||||
struct Order {
|
||||
name: String,
|
||||
@ -35,7 +33,11 @@ mod tests {
|
||||
fn your_order() {
|
||||
let order_template = create_order_template();
|
||||
// TODO: Create your own order using the update syntax and template above!
|
||||
// let your_order =
|
||||
let your_order = Order {
|
||||
name: String::from("Hacker in Rust"),
|
||||
count: 1,
|
||||
..order_template
|
||||
};
|
||||
assert_eq!(your_order.name, "Hacker in Rust");
|
||||
assert_eq!(your_order.year, order_template.year);
|
||||
assert_eq!(your_order.made_by_phone, order_template.made_by_phone);
|
||||
|
||||
@ -4,8 +4,6 @@
|
||||
// Make the code compile and the tests pass!
|
||||
// Execute `rustlings hint structs3` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
#[derive(Debug)]
|
||||
struct Package {
|
||||
sender_country: String,
|
||||
@ -26,12 +24,12 @@ impl Package {
|
||||
}
|
||||
}
|
||||
|
||||
fn is_international(&self) -> ??? {
|
||||
// Something goes here...
|
||||
fn is_international(&self) -> bool {
|
||||
self.sender_country != self.recipient_country
|
||||
}
|
||||
|
||||
fn get_fees(&self, cents_per_gram: i32) -> ??? {
|
||||
// Something goes here...
|
||||
fn get_fees(&self, cents_per_gram: i32) -> i32 {
|
||||
cents_per_gram * self.weight_in_grams
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
@ -2,9 +2,7 @@
|
||||
// Make me compile!
|
||||
// Execute `rustlings hint variables1` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn main() {
|
||||
x = 5;
|
||||
let x = 5;
|
||||
println!("x has the value {}", x);
|
||||
}
|
||||
|
||||
@ -1,10 +1,8 @@
|
||||
// variables2.rs
|
||||
// Execute `rustlings hint variables2` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn main() {
|
||||
let x;
|
||||
let x = 0;
|
||||
if x == 10 {
|
||||
println!("x is ten!");
|
||||
} else {
|
||||
|
||||
@ -1,9 +1,7 @@
|
||||
// variables3.rs
|
||||
// Execute `rustlings hint variables3` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn main() {
|
||||
let x: i32;
|
||||
let x: i32 = 32;
|
||||
println!("Number {}", x);
|
||||
}
|
||||
|
||||
@ -1,10 +1,8 @@
|
||||
// variables4.rs
|
||||
// Execute `rustlings hint variables4` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn main() {
|
||||
let x = 3;
|
||||
let mut x = 3;
|
||||
println!("Number {}", x);
|
||||
x = 5; // don't change this line
|
||||
println!("Number {}", x);
|
||||
|
||||
@ -1,11 +1,9 @@
|
||||
// variables5.rs
|
||||
// Execute `rustlings hint variables5` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn main() {
|
||||
let number = "T-H-R-E-E"; // don't change this line
|
||||
println!("Spell a Number : {}", number);
|
||||
number = 3; // don't rename this variable
|
||||
let number = 3; // don't rename this variable
|
||||
println!("Number plus two is : {}", number + 2);
|
||||
}
|
||||
|
||||
@ -1,9 +1,7 @@
|
||||
// variables6.rs
|
||||
// Execute `rustlings hint variables6` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
const NUMBER = 3;
|
||||
const NUMBER: i32 = 3;
|
||||
fn main() {
|
||||
println!("Number {}", NUMBER);
|
||||
}
|
||||
|
||||
@ -4,11 +4,9 @@
|
||||
// Make me compile and pass the test!
|
||||
// Execute `rustlings hint vecs1` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn array_and_vec() -> ([i32; 4], Vec<i32>) {
|
||||
let a = [10, 20, 30, 40]; // a plain array
|
||||
let v = // TODO: declare your vector here with the macro for vectors
|
||||
let v = vec![10, 20, 30, 40];
|
||||
|
||||
(a, v)
|
||||
}
|
||||
|
||||
@ -6,13 +6,9 @@
|
||||
//
|
||||
// Execute `rustlings hint vecs2` or use the `hint` watch subcommand for a hint.
|
||||
|
||||
// I AM NOT DONE
|
||||
|
||||
fn vec_loop(mut v: Vec<i32>) -> Vec<i32> {
|
||||
for i in v.iter_mut() {
|
||||
// TODO: Fill this up so that each element in the Vec `v` is
|
||||
// multiplied by 2.
|
||||
???
|
||||
*i *= 2;
|
||||
}
|
||||
|
||||
// At this point, `v` should be equal to [4, 8, 12, 16, 20].
|
||||
@ -20,11 +16,7 @@ fn vec_loop(mut v: Vec<i32>) -> Vec<i32> {
|
||||
}
|
||||
|
||||
fn vec_map(v: &Vec<i32>) -> Vec<i32> {
|
||||
v.iter().map(|num| {
|
||||
// TODO: Do the same thing as above - but instead of mutating the
|
||||
// Vec, you can just return the new number!
|
||||
???
|
||||
}).collect()
|
||||
v.iter().map(|num| num * 2).collect()
|
||||
}
|
||||
|
||||
#[cfg(test)]
|
||||
|
||||
Loading…
x
Reference in New Issue
Block a user