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27abea4b5b
| Author | SHA1 | Date | |
|---|---|---|---|
|
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27abea4b5b |
Generated
-4
@@ -167,10 +167,6 @@ dependencies = [
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|||||||
"windows-sys 0.61.2",
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"windows-sys 0.61.2",
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||||||
]
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]
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||||||
|
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[[package]]
|
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name = "exercises"
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version = "0.0.0"
|
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||||||
|
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||||||
[[package]]
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[[package]]
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name = "fastrand"
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name = "fastrand"
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version = "2.4.1"
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version = "2.4.1"
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+1
-4
@@ -1,10 +1,7 @@
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[workspace]
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[workspace]
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members = [
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"rustlings-macros",
|
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"dev",
|
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||||||
]
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exclude = [
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exclude = [
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"tests/test_exercises",
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"tests/test_exercises",
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|
"dev",
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]
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]
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|
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[workspace.package]
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[workspace.package]
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@@ -8,7 +8,7 @@ fn is_even(num: i64) -> bool {
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}
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}
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|
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// TODO: Fix the function signature.
|
// TODO: Fix the function signature.
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||||||
fn sale_price(price: i64) -> i64 {
|
fn sale_price(price: i64) -> {
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||||||
if is_even(price) {
|
if is_even(price) {
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price - 10
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price - 10
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||||||
} else {
|
} else {
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|||||||
@@ -1,6 +1,6 @@
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// TODO: Fix the function body without changing the signature.
|
// TODO: Fix the function body without changing the signature.
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||||||
fn square(num: i32) -> i32 {
|
fn square(num: i32) -> i32 {
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num * num
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num * num;
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}
|
}
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||||||
|
|
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fn main() {
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fn main() {
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|||||||
@@ -4,11 +4,6 @@ fn bigger(a: i32, b: i32) -> i32 {
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// Do not use:
|
// Do not use:
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// - another function call
|
// - another function call
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||||||
// - additional variables
|
// - additional variables
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||||||
if a > b {
|
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a
|
|
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} else {
|
|
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b
|
|
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}
|
|
||||||
}
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}
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||||||
|
|
||||||
fn main() {
|
fn main() {
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|
|||||||
@@ -2,10 +2,8 @@
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|||||||
fn picky_eater(food: &str) -> &str {
|
fn picky_eater(food: &str) -> &str {
|
||||||
if food == "strawberry" {
|
if food == "strawberry" {
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"Yummy!"
|
"Yummy!"
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||||||
} else if food == "potato" {
|
|
||||||
"I guess I can eat that."
|
|
||||||
} else {
|
} else {
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||||||
"No thanks!"
|
1
|
||||||
}
|
}
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||||||
}
|
}
|
||||||
|
|
||||||
|
|||||||
@@ -3,11 +3,11 @@ fn animal_habitat(animal: &str) -> &str {
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let identifier = if animal == "crab" {
|
let identifier = if animal == "crab" {
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1
|
1
|
||||||
} else if animal == "gopher" {
|
} else if animal == "gopher" {
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2
|
2.0
|
||||||
} else if animal == "snake" {
|
} else if animal == "snake" {
|
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3
|
3
|
||||||
} else {
|
} else {
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0
|
"Unknown"
|
||||||
};
|
};
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||||||
|
|
||||||
// Don't change the expression below!
|
// Don't change the expression below!
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||||||
|
|||||||
@@ -8,8 +8,7 @@ fn main() {
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|||||||
|
|
||||||
// TODO: Define a boolean variable with the name `is_evening` before the `if` statement below.
|
// TODO: Define a boolean variable with the name `is_evening` before the `if` statement below.
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// The value of the variable should be the negation (opposite) of `is_morning`.
|
// The value of the variable should be the negation (opposite) of `is_morning`.
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let is_evening = true;
|
// let …
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||||||
|
|
||||||
if is_evening {
|
if is_evening {
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println!("Good evening!");
|
println!("Good evening!");
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}
|
}
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||||||
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|||||||
@@ -17,7 +17,6 @@ fn main() {
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// Try a letter, try a digit (in single quotes), try a special character, try a character
|
// Try a letter, try a digit (in single quotes), try a special character, try a character
|
||||||
// from a different language than your own, try an emoji 😉
|
// from a different language than your own, try an emoji 😉
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||||||
// let your_character = '';
|
// let your_character = '';
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let your_character = '僕';
|
|
||||||
|
|
||||||
if your_character.is_alphabetic() {
|
if your_character.is_alphabetic() {
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println!("Alphabetical!");
|
println!("Alphabetical!");
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||||||
|
|||||||
@@ -2,14 +2,6 @@ fn main() {
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// TODO: Create an array called `a` with at least 100 elements in it.
|
// TODO: Create an array called `a` with at least 100 elements in it.
|
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// let a = ???
|
// let a = ???
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|
|
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let a = [
|
|
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1, 2, 3, 4, 5, 6, 7, 1, 231, 234, 11, 4512, 51, 5, 12, 51, 25, 12, 45, 134, 12, 412, 45,
|
|
||||||
12, 512, 512, 5, 12, 512, 4, 124, 12, 5, 125, 123, 3412, 45, 123, 5123, 5, 12345, 123, 412,
|
|
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56, 1236, 234, 6345, 6534, 6, 547, 456, 754, 6, 345, 34, 534, 6, 235, 123, 4523, 4523, 5,
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235, 235, 2, 532, 523, 23, 124, 21, 2, 3, 51235, 664, 3466, 345,312,312,421,412,45,1245,123,423,523,56,234,5234,5234,5,346,345,6745,7456,7456,7,456,7456,7,4, 2, 6, 23, 12, 4512, 512,
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5, 512, 5, 125, 125, 125, 12, 56, 75, 7456, 87,
|
|
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];
|
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|
|
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if a.len() >= 100 {
|
if a.len() >= 100 {
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println!("Wow, that's a big array!");
|
println!("Wow, that's a big array!");
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||||||
} else {
|
} else {
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|
|||||||
@@ -11,7 +11,6 @@ mod tests {
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// TODO: Get a slice called `nice_slice` out of the array `a` so that the test passes.
|
// TODO: Get a slice called `nice_slice` out of the array `a` so that the test passes.
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||||||
// let nice_slice = ???
|
// let nice_slice = ???
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||||||
|
|
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let nice_slice = &a[1..4];
|
|
||||||
assert_eq!([2, 3, 4], nice_slice);
|
assert_eq!([2, 3, 4], nice_slice);
|
||||||
}
|
}
|
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}
|
}
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||||||
|
|||||||
@@ -4,7 +4,5 @@ fn main() {
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// TODO: Destructure the `cat` tuple in one statement so that the println works.
|
// TODO: Destructure the `cat` tuple in one statement so that the println works.
|
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// let /* your pattern here */ = cat;
|
// let /* your pattern here */ = cat;
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||||||
|
|
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let (name, age) = cat;
|
|
||||||
|
|
||||||
println!("{name} is {age} years old");
|
println!("{name} is {age} years old");
|
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}
|
}
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||||||
|
|||||||
@@ -4,7 +4,6 @@ fn main() {
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|||||||
|
|
||||||
#[cfg(test)]
|
#[cfg(test)]
|
||||||
mod tests {
|
mod tests {
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||||||
|
|
||||||
#[test]
|
#[test]
|
||||||
fn indexing_tuple() {
|
fn indexing_tuple() {
|
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let numbers = (1, 2, 3);
|
let numbers = (1, 2, 3);
|
||||||
@@ -12,7 +11,6 @@ mod tests {
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|||||||
// TODO: Use a tuple index to access the second element of `numbers`
|
// TODO: Use a tuple index to access the second element of `numbers`
|
||||||
// and assign it to a variable called `second`.
|
// and assign it to a variable called `second`.
|
||||||
// let second = ???;
|
// let second = ???;
|
||||||
let second = numbers.1;
|
|
||||||
|
|
||||||
assert_eq!(second, 2, "This is not the 2nd number in the tuple!");
|
assert_eq!(second, 2, "This is not the 2nd number in the tuple!");
|
||||||
}
|
}
|
||||||
|
|||||||
@@ -1,8 +1,6 @@
|
|||||||
fn elems_to_vec(a: i32, b: i32, c: i32) -> Vec<i32> {
|
fn elems_to_vec(a: i32, b: i32, c: i32) -> Vec<i32> {
|
||||||
// TODO: Return a vector containing the elements a, b and c (in this order).
|
// TODO: Return a vector containing the elements a, b and c (in this order).
|
||||||
// Use the "vec!" macro.
|
// Use the "vec!" macro.
|
||||||
let vector: Vec<i32> = vec![a, b, c];
|
|
||||||
vector
|
|
||||||
}
|
}
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
|
|||||||
@@ -4,8 +4,6 @@ fn vec_loop(input: &[i32]) -> Vec<i32> {
|
|||||||
for element in input {
|
for element in input {
|
||||||
// TODO: Multiply each element in the `input` slice by 2 and push it to
|
// TODO: Multiply each element in the `input` slice by 2 and push it to
|
||||||
// the `output` vector.
|
// the `output` vector.
|
||||||
|
|
||||||
output.push(element * 2);
|
|
||||||
}
|
}
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||||||
|
|
||||||
output
|
output
|
||||||
|
|||||||
@@ -1,6 +1,6 @@
|
|||||||
// TODO: Fix the compiler error in this function.
|
// TODO: Fix the compiler error in this function.
|
||||||
fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
|
fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
|
||||||
let mut vec = vec;
|
let vec = vec;
|
||||||
|
|
||||||
vec.push(88);
|
vec.push(88);
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||||||
|
|
||||||
|
|||||||
@@ -20,7 +20,7 @@ mod tests {
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|||||||
fn move_semantics2() {
|
fn move_semantics2() {
|
||||||
let vec0 = vec![22, 44, 66];
|
let vec0 = vec![22, 44, 66];
|
||||||
|
|
||||||
let vec1 = fill_vec(vec0.clone());
|
let vec1 = fill_vec(vec0);
|
||||||
|
|
||||||
assert_eq!(vec0, [22, 44, 66]);
|
assert_eq!(vec0, [22, 44, 66]);
|
||||||
assert_eq!(vec1, [22, 44, 66, 88]);
|
assert_eq!(vec1, [22, 44, 66, 88]);
|
||||||
|
|||||||
@@ -1,5 +1,5 @@
|
|||||||
// TODO: Fix the compiler error in the function without adding any new line.
|
// TODO: Fix the compiler error in the function without adding any new line.
|
||||||
fn fill_vec(mut vec: Vec<i32>) -> Vec<i32> {
|
fn fill_vec(vec: Vec<i32>) -> Vec<i32> {
|
||||||
vec.push(88);
|
vec.push(88);
|
||||||
|
|
||||||
vec
|
vec
|
||||||
|
|||||||
@@ -10,8 +10,8 @@ mod tests {
|
|||||||
fn move_semantics4() {
|
fn move_semantics4() {
|
||||||
let mut x = Vec::new();
|
let mut x = Vec::new();
|
||||||
let y = &mut x;
|
let y = &mut x;
|
||||||
y.push(42);
|
|
||||||
let z = &mut x;
|
let z = &mut x;
|
||||||
|
y.push(42);
|
||||||
z.push(13);
|
z.push(13);
|
||||||
assert_eq!(x, [42, 13]);
|
assert_eq!(x, [42, 13]);
|
||||||
}
|
}
|
||||||
|
|||||||
@@ -4,12 +4,12 @@
|
|||||||
// removing references (the character `&`).
|
// removing references (the character `&`).
|
||||||
|
|
||||||
// Shouldn't take ownership
|
// Shouldn't take ownership
|
||||||
fn get_char(data: &String) -> char {
|
fn get_char(data: String) -> char {
|
||||||
data.chars().last().unwrap()
|
data.chars().last().unwrap()
|
||||||
}
|
}
|
||||||
|
|
||||||
// Should take ownership
|
// Should take ownership
|
||||||
fn string_uppercase(mut data: String) {
|
fn string_uppercase(mut data: &String) {
|
||||||
data = data.to_uppercase();
|
data = data.to_uppercase();
|
||||||
|
|
||||||
println!("{data}");
|
println!("{data}");
|
||||||
@@ -18,7 +18,7 @@ fn string_uppercase(mut data: String) {
|
|||||||
fn main() {
|
fn main() {
|
||||||
let data = "Rust is great!".to_string();
|
let data = "Rust is great!".to_string();
|
||||||
|
|
||||||
get_char(&data);
|
get_char(data);
|
||||||
|
|
||||||
string_uppercase(data);
|
string_uppercase(&data);
|
||||||
}
|
}
|
||||||
|
|||||||
@@ -1,12 +1,9 @@
|
|||||||
struct ColorRegularStruct {
|
struct ColorRegularStruct {
|
||||||
// TODO: Add the fields that the test `regular_structs` expects.
|
// TODO: Add the fields that the test `regular_structs` expects.
|
||||||
// What types should the fields have? What are the minimum and maximum values for RGB colors?
|
// What types should the fields have? What are the minimum and maximum values for RGB colors?
|
||||||
red: u8,
|
|
||||||
green: u8,
|
|
||||||
blue: u8,
|
|
||||||
}
|
}
|
||||||
|
|
||||||
struct ColorTupleStruct(u8, u8, u8);
|
struct ColorTupleStruct(/* TODO: Add the fields that the test `tuple_structs` expects */);
|
||||||
|
|
||||||
#[derive(Debug)]
|
#[derive(Debug)]
|
||||||
struct UnitStruct;
|
struct UnitStruct;
|
||||||
@@ -23,11 +20,7 @@ mod tests {
|
|||||||
fn regular_structs() {
|
fn regular_structs() {
|
||||||
// TODO: Instantiate a regular struct.
|
// TODO: Instantiate a regular struct.
|
||||||
// let green =
|
// let green =
|
||||||
let green = ColorRegularStruct {
|
|
||||||
red: 0,
|
|
||||||
green: 255,
|
|
||||||
blue: 0,
|
|
||||||
};
|
|
||||||
assert_eq!(green.red, 0);
|
assert_eq!(green.red, 0);
|
||||||
assert_eq!(green.green, 255);
|
assert_eq!(green.green, 255);
|
||||||
assert_eq!(green.blue, 0);
|
assert_eq!(green.blue, 0);
|
||||||
@@ -37,7 +30,7 @@ mod tests {
|
|||||||
fn tuple_structs() {
|
fn tuple_structs() {
|
||||||
// TODO: Instantiate a tuple struct.
|
// TODO: Instantiate a tuple struct.
|
||||||
// let green =
|
// let green =
|
||||||
let green = ColorTupleStruct(0, 255, 0);
|
|
||||||
assert_eq!(green.0, 0);
|
assert_eq!(green.0, 0);
|
||||||
assert_eq!(green.1, 255);
|
assert_eq!(green.1, 255);
|
||||||
assert_eq!(green.2, 0);
|
assert_eq!(green.2, 0);
|
||||||
@@ -46,7 +39,7 @@ mod tests {
|
|||||||
#[test]
|
#[test]
|
||||||
fn unit_structs() {
|
fn unit_structs() {
|
||||||
// TODO: Instantiate a unit struct.
|
// TODO: Instantiate a unit struct.
|
||||||
let unit_struct = UnitStruct;
|
// let unit_struct =
|
||||||
let message = format!("{unit_struct:?}s are fun!");
|
let message = format!("{unit_struct:?}s are fun!");
|
||||||
|
|
||||||
assert_eq!(message, "UnitStructs are fun!");
|
assert_eq!(message, "UnitStructs are fun!");
|
||||||
|
|||||||
@@ -36,12 +36,6 @@ mod tests {
|
|||||||
// TODO: Create your own order using the update syntax and template above!
|
// TODO: Create your own order using the update syntax and template above!
|
||||||
// let your_order =
|
// let your_order =
|
||||||
|
|
||||||
let your_order = Order {
|
|
||||||
name: "Hacker in Rust".to_string(),
|
|
||||||
count: 1,
|
|
||||||
..order_template
|
|
||||||
};
|
|
||||||
|
|
||||||
assert_eq!(your_order.name, "Hacker in Rust");
|
assert_eq!(your_order.name, "Hacker in Rust");
|
||||||
assert_eq!(your_order.year, order_template.year);
|
assert_eq!(your_order.year, order_template.year);
|
||||||
assert_eq!(your_order.made_by_phone, order_template.made_by_phone);
|
assert_eq!(your_order.made_by_phone, order_template.made_by_phone);
|
||||||
|
|||||||
@@ -10,18 +10,19 @@ struct Fireworks {
|
|||||||
rockets: usize,
|
rockets: usize,
|
||||||
}
|
}
|
||||||
|
|
||||||
impl Fireworks {
|
// TODO: Turn this function into an associated function on `Fireworks`.
|
||||||
fn new() -> Self {
|
fn new_fireworks() -> Fireworks {
|
||||||
Self { rockets: 0 }
|
Fireworks { rockets: 0 }
|
||||||
}
|
}
|
||||||
|
|
||||||
fn add_rockets(&mut self, rockets: usize) {
|
// TODO: Turn this function into a method on `Fireworks`.
|
||||||
self.rockets += rockets
|
fn add_rockets(fireworks: &mut Fireworks, rockets: usize) {
|
||||||
}
|
fireworks.rockets += rockets
|
||||||
|
}
|
||||||
|
|
||||||
fn start(self) -> String {
|
// TODO: Turn this function into a method on `Fireworks`.
|
||||||
"🚀".repeat(self.rockets)
|
fn start(fireworks: Fireworks) -> String {
|
||||||
}
|
"🚀".repeat(fireworks.rockets)
|
||||||
}
|
}
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
|
|||||||
@@ -1,11 +1,6 @@
|
|||||||
#[derive(Debug)]
|
#[derive(Debug)]
|
||||||
enum Message {
|
enum Message {
|
||||||
// TODO: Define a few types of messages as used below.
|
// TODO: Define a few types of messages as used below.
|
||||||
Resize,
|
|
||||||
Move,
|
|
||||||
Echo,
|
|
||||||
ChangeColor,
|
|
||||||
Quit,
|
|
||||||
}
|
}
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
|
|||||||
@@ -7,11 +7,6 @@ struct Point {
|
|||||||
#[derive(Debug)]
|
#[derive(Debug)]
|
||||||
enum Message {
|
enum Message {
|
||||||
// TODO: Define the different variants used below.
|
// TODO: Define the different variants used below.
|
||||||
Resize { width: u64, height: u64 },
|
|
||||||
Move(Point),
|
|
||||||
Echo(String),
|
|
||||||
ChangeColor(u64, u64, u64),
|
|
||||||
Quit,
|
|
||||||
}
|
}
|
||||||
|
|
||||||
impl Message {
|
impl Message {
|
||||||
|
|||||||
@@ -46,13 +46,6 @@ impl State {
|
|||||||
fn process(&mut self, message: Message) {
|
fn process(&mut self, message: Message) {
|
||||||
// TODO: Create a match expression to process the different message
|
// TODO: Create a match expression to process the different message
|
||||||
// variants using the methods defined above.
|
// variants using the methods defined above.
|
||||||
match message {
|
|
||||||
Message::Resize { width, height } => self.resize(width, height),
|
|
||||||
Message::Move(point) => self.move_position(point),
|
|
||||||
Message::Echo(s) => self.echo(s),
|
|
||||||
Message::ChangeColor(red, green, blue) => self.change_color(red, green, blue),
|
|
||||||
Message::Quit => self.quit(),
|
|
||||||
}
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|||||||
@@ -1,6 +1,6 @@
|
|||||||
// TODO: Fix the compiler error without changing the function signature.
|
// TODO: Fix the compiler error without changing the function signature.
|
||||||
fn current_favorite_color() -> String {
|
fn current_favorite_color() -> String {
|
||||||
"blue".to_string()
|
"blue"
|
||||||
}
|
}
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
|
|||||||
@@ -6,7 +6,7 @@ fn is_a_color_word(attempt: &str) -> bool {
|
|||||||
fn main() {
|
fn main() {
|
||||||
let word = String::from("green"); // Don't change this line.
|
let word = String::from("green"); // Don't change 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.");
|
||||||
|
|||||||
@@ -1,18 +1,13 @@
|
|||||||
fn trim_me(input: &str) -> &str {
|
fn trim_me(input: &str) -> &str {
|
||||||
// TODO: Remove whitespace from both ends of a string.
|
// TODO: Remove whitespace from both ends of a string.
|
||||||
input.trim()
|
|
||||||
}
|
}
|
||||||
|
|
||||||
fn compose_me(input: &str) -> String {
|
fn compose_me(input: &str) -> String {
|
||||||
// TODO: Add " world!" to the string! There are multiple ways to do this.
|
// TODO: Add " world!" to the string! There are multiple ways to do this.
|
||||||
let world = " world!";
|
|
||||||
let s: String = input.to_owned() + world;
|
|
||||||
s
|
|
||||||
}
|
}
|
||||||
|
|
||||||
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")
|
|
||||||
}
|
}
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
|
|||||||
@@ -13,23 +13,23 @@ fn string(arg: String) {
|
|||||||
// Your task is to replace `placeholder(…)` with either `string_slice(…)`
|
// Your task is to replace `placeholder(…)` with either `string_slice(…)`
|
||||||
// or `string(…)` depending on what you think each value is.
|
// or `string(…)` depending on what you think each value is.
|
||||||
fn main() {
|
fn main() {
|
||||||
string_slice("blue");
|
placeholder("blue");
|
||||||
|
|
||||||
string("red".to_string());
|
placeholder("red".to_string());
|
||||||
|
|
||||||
string(String::from("hi"));
|
placeholder(String::from("hi"));
|
||||||
|
|
||||||
string("rust is fun!".to_owned());
|
placeholder("rust is fun!".to_owned());
|
||||||
|
|
||||||
string(format!("Interpolation {}", "Station"));
|
placeholder(format!("Interpolation {}", "Station"));
|
||||||
|
|
||||||
// WARNING: This is byte indexing, not character indexing.
|
// WARNING: This is byte indexing, not character indexing.
|
||||||
// Character indexing can be done using `s.chars().nth(INDEX)`.
|
// Character indexing can be done using `s.chars().nth(INDEX)`.
|
||||||
string_slice(&String::from("abc")[0..1]);
|
placeholder(&String::from("abc")[0..1]);
|
||||||
|
|
||||||
string_slice(" hello there ".trim());
|
placeholder(" hello there ".trim());
|
||||||
|
|
||||||
string("Happy Monday!".replace("Mon", "Tues"));
|
placeholder("Happy Monday!".replace("Mon", "Tues"));
|
||||||
|
|
||||||
string("mY sHiFt KeY iS sTiCkY".to_lowercase());
|
placeholder("mY sHiFt KeY iS sTiCkY".to_lowercase());
|
||||||
}
|
}
|
||||||
|
|||||||
@@ -5,7 +5,7 @@ mod sausage_factory {
|
|||||||
String::from("Ginger")
|
String::from("Ginger")
|
||||||
}
|
}
|
||||||
|
|
||||||
pub fn make_sausage() {
|
fn make_sausage() {
|
||||||
get_secret_recipe();
|
get_secret_recipe();
|
||||||
println!("sausage!");
|
println!("sausage!");
|
||||||
}
|
}
|
||||||
|
|||||||
@@ -6,9 +6,6 @@ mod delicious_snacks {
|
|||||||
// use self::fruits::PEAR as ???;
|
// use self::fruits::PEAR as ???;
|
||||||
// use self::veggies::CUCUMBER as ???;
|
// use self::veggies::CUCUMBER as ???;
|
||||||
|
|
||||||
pub use self::fruits::PEAR as fruit;
|
|
||||||
pub use self::veggies::CUCUMBER as veggie;
|
|
||||||
|
|
||||||
mod fruits {
|
mod fruits {
|
||||||
pub const PEAR: &str = "Pear";
|
pub const PEAR: &str = "Pear";
|
||||||
pub const APPLE: &str = "Apple";
|
pub const APPLE: &str = "Apple";
|
||||||
|
|||||||
@@ -4,8 +4,6 @@
|
|||||||
// TODO: Bring `SystemTime` and `UNIX_EPOCH` from the `std::time` module into
|
// TODO: Bring `SystemTime` and `UNIX_EPOCH` from the `std::time` module into
|
||||||
// your scope. Bonus style points if you can do it with one line!
|
// your scope. Bonus style points if you can do it with one line!
|
||||||
// use ???;
|
// use ???;
|
||||||
use std::time::SystemTime;
|
|
||||||
use std::time::UNIX_EPOCH;
|
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
match SystemTime::now().duration_since(UNIX_EPOCH) {
|
match SystemTime::now().duration_since(UNIX_EPOCH) {
|
||||||
|
|||||||
@@ -9,11 +9,10 @@ use std::collections::HashMap;
|
|||||||
fn fruit_basket() -> HashMap<String, u32> {
|
fn fruit_basket() -> HashMap<String, u32> {
|
||||||
// TODO: Declare the hash map.
|
// TODO: Declare the hash map.
|
||||||
// let mut basket =
|
// let mut basket =
|
||||||
let mut basket = HashMap::new();
|
|
||||||
// Two bananas are already given for you :)
|
// Two bananas are already given for you :)
|
||||||
basket.insert(String::from("banana"), 2);
|
basket.insert(String::from("banana"), 2);
|
||||||
basket.insert(String::from("apple"), 2);
|
|
||||||
basket.insert(String::from("mango"), 1);
|
|
||||||
// TODO: Put more fruits in your basket.
|
// TODO: Put more fruits in your basket.
|
||||||
|
|
||||||
basket
|
basket
|
||||||
|
|||||||
@@ -28,12 +28,10 @@ fn fruit_basket(basket: &mut HashMap<Fruit, u32>) {
|
|||||||
Fruit::Pineapple,
|
Fruit::Pineapple,
|
||||||
];
|
];
|
||||||
|
|
||||||
for _fruit in fruit_kinds {
|
for fruit in fruit_kinds {
|
||||||
// TODO: Insert new fruits if they are not already present in the
|
// TODO: Insert new fruits if they are not already present in the
|
||||||
// basket. Note that you are not allowed to put any type of fruit that's
|
// basket. Note that you are not allowed to put any type of fruit that's
|
||||||
// already present!
|
// already present!
|
||||||
basket.insert(Fruit::Banana, 4);
|
|
||||||
basket.insert(Fruit::Pineapple, 3);
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|||||||
@@ -27,11 +27,6 @@ fn build_scores_table(results: &str) -> HashMap<&str, TeamScores> {
|
|||||||
let team_1_score: u8 = split_iterator.next().unwrap().parse().unwrap();
|
let team_1_score: u8 = split_iterator.next().unwrap().parse().unwrap();
|
||||||
let team_2_score: u8 = split_iterator.next().unwrap().parse().unwrap();
|
let team_2_score: u8 = split_iterator.next().unwrap().parse().unwrap();
|
||||||
|
|
||||||
scores.entry(team_1_name).or_default().goals_scored += team_1_score;
|
|
||||||
scores.entry(team_2_name).or_default().goals_scored += team_2_score;
|
|
||||||
|
|
||||||
scores.entry(team_1_name).or_default().goals_conceded += team_2_score;
|
|
||||||
scores.entry(team_2_name).or_default().goals_conceded += team_1_score;
|
|
||||||
// TODO: Populate the scores table with the extracted details.
|
// TODO: Populate the scores table with the extracted details.
|
||||||
// Keep in mind that goals scored by team 1 will be the number of goals
|
// Keep in mind that goals scored by team 1 will be the number of goals
|
||||||
// conceded by team 2. Similarly, goals scored by team 2 will be the
|
// conceded by team 2. Similarly, goals scored by team 2 will be the
|
||||||
|
|||||||
@@ -4,14 +4,6 @@
|
|||||||
// `hour_of_day` is higher than 23.
|
// `hour_of_day` is higher than 23.
|
||||||
fn maybe_ice_cream(hour_of_day: u16) -> Option<u16> {
|
fn maybe_ice_cream(hour_of_day: u16) -> Option<u16> {
|
||||||
// TODO: Complete the function body.
|
// TODO: Complete the function body.
|
||||||
|
|
||||||
if hour_of_day < 22 {
|
|
||||||
Some(5)
|
|
||||||
} else if hour_of_day <= 23 {
|
|
||||||
Some(0)
|
|
||||||
} else {
|
|
||||||
None
|
|
||||||
}
|
|
||||||
}
|
}
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
@@ -26,7 +18,7 @@ mod tests {
|
|||||||
fn raw_value() {
|
fn raw_value() {
|
||||||
// TODO: Fix this test. How do you get the value contained in the
|
// TODO: Fix this test. How do you get the value contained in the
|
||||||
// Option?
|
// Option?
|
||||||
let ice_creams = maybe_ice_cream(12).unwrap();
|
let ice_creams = maybe_ice_cream(12);
|
||||||
|
|
||||||
assert_eq!(ice_creams, 5); // Don't change this line.
|
assert_eq!(ice_creams, 5); // Don't change this line.
|
||||||
}
|
}
|
||||||
|
|||||||
@@ -10,12 +10,8 @@ mod tests {
|
|||||||
let optional_target = Some(target);
|
let optional_target = Some(target);
|
||||||
|
|
||||||
// TODO: Make this an if-let statement whose value is `Some`.
|
// TODO: Make this an if-let statement whose value is `Some`.
|
||||||
//
|
word = optional_target {
|
||||||
// word = optional_target {
|
assert_eq!(word, target);
|
||||||
// assert_eq!(word, target);
|
|
||||||
// }
|
|
||||||
if let Some(word) = optional_target {
|
|
||||||
assert_eq!(word, target)
|
|
||||||
}
|
}
|
||||||
}
|
}
|
||||||
|
|
||||||
@@ -33,13 +29,7 @@ mod tests {
|
|||||||
// TODO: Make this a while-let statement. Remember that `Vec::pop()`
|
// TODO: Make this a while-let statement. Remember that `Vec::pop()`
|
||||||
// adds another layer of `Option`. You can do nested pattern matching
|
// adds another layer of `Option`. You can do nested pattern matching
|
||||||
// in if-let and while-let statements.
|
// in if-let and while-let statements.
|
||||||
//
|
integer = optional_integers.pop() {
|
||||||
// integer = optional_integers.pop() {
|
|
||||||
// assert_eq!(integer, cursor);
|
|
||||||
// cursor -= 1;
|
|
||||||
// }
|
|
||||||
|
|
||||||
while let Some(Some(integer)) = optional_integers.pop() {
|
|
||||||
assert_eq!(integer, cursor);
|
assert_eq!(integer, cursor);
|
||||||
cursor -= 1;
|
cursor -= 1;
|
||||||
}
|
}
|
||||||
|
|||||||
@@ -9,9 +9,7 @@ fn main() {
|
|||||||
|
|
||||||
// TODO: Fix the compiler error by adding something to this match statement.
|
// TODO: Fix the compiler error by adding something to this match statement.
|
||||||
match optional_point {
|
match optional_point {
|
||||||
Some(ref p) => {
|
Some(p) => println!("Coordinates are {},{}", p.x, p.y),
|
||||||
println!("Coordinates are {},{}", p.x, p.y)
|
|
||||||
}
|
|
||||||
_ => panic!("No match!"),
|
_ => panic!("No match!"),
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|||||||
@@ -11,18 +11,6 @@
|
|||||||
// TODO: Write a function that calculates the price of an order of apples given
|
// TODO: Write a function that calculates the price of an order of apples given
|
||||||
// the quantity bought.
|
// the quantity bought.
|
||||||
// fn calculate_price_of_apples(???) -> ??? { ??? }
|
// fn calculate_price_of_apples(???) -> ??? { ??? }
|
||||||
fn calculate_price_of_apples(apples: i32) -> i32 {
|
|
||||||
let mut cost: i32 = 2;
|
|
||||||
|
|
||||||
if apples > 40 {
|
|
||||||
cost = 1;
|
|
||||||
cost *= apples;
|
|
||||||
cost
|
|
||||||
} else {
|
|
||||||
cost *= apples;
|
|
||||||
cost
|
|
||||||
}
|
|
||||||
}
|
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
// You can optionally experiment here.
|
// You can optionally experiment here.
|
||||||
|
|||||||
@@ -28,25 +28,6 @@ mod my_module {
|
|||||||
|
|
||||||
// TODO: Complete the function as described above.
|
// TODO: Complete the function as described above.
|
||||||
// pub fn transformer(input: ???) -> ??? { ??? }
|
// pub fn transformer(input: ???) -> ??? { ??? }
|
||||||
|
|
||||||
pub fn transformer(input: Vec<(String, Command)>) -> Vec<String> {
|
|
||||||
let mut output = Vec::new();
|
|
||||||
for (s, cmd) in input {
|
|
||||||
let transformed = match cmd {
|
|
||||||
Command::Uppercase => s.to_uppercase(),
|
|
||||||
Command::Trim => s.trim().to_owned(),
|
|
||||||
Command::Append(n) => {
|
|
||||||
let mut out = s;
|
|
||||||
for _ in 0..n {
|
|
||||||
out.push_str("bar");
|
|
||||||
}
|
|
||||||
out
|
|
||||||
}
|
|
||||||
};
|
|
||||||
output.push(transformed)
|
|
||||||
}
|
|
||||||
output
|
|
||||||
}
|
|
||||||
}
|
}
|
||||||
|
|
||||||
fn main() {
|
fn main() {
|
||||||
@@ -58,7 +39,6 @@ mod tests {
|
|||||||
// TODO: What do we need to import to have `transformer` in scope?
|
// TODO: What do we need to import to have `transformer` in scope?
|
||||||
// use ???;
|
// use ???;
|
||||||
use super::Command;
|
use super::Command;
|
||||||
use crate::my_module::transformer;
|
|
||||||
|
|
||||||
#[test]
|
#[test]
|
||||||
fn it_works() {
|
fn it_works() {
|
||||||
|
|||||||
Reference in New Issue
Block a user