diff --git a/exercises/primitive_types/primitive_types1.rs b/exercises/primitive_types/primitive_types1.rs
index 0912139..2466419 100644
--- a/exercises/primitive_types/primitive_types1.rs
+++ b/exercises/primitive_types/primitive_types1.rs
@@ -2,7 +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 +11,7 @@ fn main() {
println!("Good morning!");
}
- let // Finish the rest of this line like the example! Or make it be false!
+ let is_evening = false;// Finish the rest of this line like the example! Or make it be false!
if is_evening {
println!("Good evening!");
}
diff --git a/exercises/primitive_types/primitive_types2.rs b/exercises/primitive_types/primitive_types2.rs
index 6576a4d..7faeba2 100644
--- a/exercises/primitive_types/primitive_types2.rs
+++ b/exercises/primitive_types/primitive_types2.rs
@@ -2,7 +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`)
@@ -16,7 +15,7 @@ fn main() {
println!("Neither alphabetic nor numeric!");
}
- let // Finish this line like the example! What's your favorite character?
+ let your_character = '3';// 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!
if your_character.is_alphabetic() {
diff --git a/exercises/primitive_types/primitive_types3.rs b/exercises/primitive_types/primitive_types3.rs
index dfd6351..9127d7d 100644
--- a/exercises/primitive_types/primitive_types3.rs
+++ b/exercises/primitive_types/primitive_types3.rs
@@ -2,10 +2,9 @@
// Create an array with at least 100 elements in it where the ??? is.
// Execute `rustlings hint primitive_types3` for hints!
-// I AM NOT DONE
fn main() {
- let a = ???
+ let a = [1;100]; // 100 elem with 1
if a.len() >= 100 {
println!("Wow, that's a big array!");
diff --git a/exercises/primitive_types/primitive_types4.rs b/exercises/primitive_types/primitive_types4.rs
index 10b553e..f9a7501 100644
--- a/exercises/primitive_types/primitive_types4.rs
+++ b/exercises/primitive_types/primitive_types4.rs
@@ -2,13 +2,13 @@
// Get a slice out of Array a where the ??? is so that the test passes.
// Execute `rustlings hint primitive_types4` for hints!!
-// I AM NOT DONE
#[test]
fn slice_out_of_array() {
let a = [1, 2, 3, 4, 5];
- let nice_slice = ???
-
- assert_eq!([2, 3, 4], nice_slice)
+ let nice_slice = &a[1..a.len() - 1];
+//https://doc.rust-lang.org/book/ch15-02-deref.html
+// implement a deref trait
+ assert_eq!([2, 3, 4], *nice_slice)
}
diff --git a/exercises/primitive_types/primitive_types5.rs b/exercises/primitive_types/primitive_types5.rs
index 680d8d2..8cc1390 100644
--- a/exercises/primitive_types/primitive_types5.rs
+++ b/exercises/primitive_types/primitive_types5.rs
@@ -2,11 +2,10 @@
// Destructure the `cat` tuple so that the println will work.
// Execute `rustlings hint primitive_types5` for hints!
-// I AM NOT DONE
fn main() {
let cat = ("Furry McFurson", 3.5);
- let /* your pattern here */ = cat;
+ let (name, age) = cat; // tuple decoupling?
println!("{} is {} years old.", name, age);
}
diff --git a/exercises/primitive_types/primitive_types6.rs b/exercises/primitive_types/primitive_types6.rs
index 2bc817e..0c591bb 100644
--- a/exercises/primitive_types/primitive_types6.rs
+++ b/exercises/primitive_types/primitive_types6.rs
@@ -3,9 +3,8 @@
// You can put this right into the `println!` where the ??? is.
// Execute `rustlings hint primitive_types6` for hints!
-// I AM NOT DONE
fn main() {
let numbers = (1, 2, 3);
- println!("The second number is {}", ???);
+ println!("The second number is {}", numbers.2);
}
diff --git a/exercises/strings/strings1.rs b/exercises/strings/strings1.rs
index 8090244..21a0139 100644
--- a/exercises/strings/strings1.rs
+++ b/exercises/strings/strings1.rs
@@ -2,13 +2,11 @@
// Make me compile without changing the function signature!
// Execute `rustlings hint strings1` for hints ;)
-// 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()
}
diff --git a/exercises/strings/strings2.rs b/exercises/strings/strings2.rs
index 5a2ce74..4200f69 100644
--- a/exercises/strings/strings2.rs
+++ b/exercises/strings/strings2.rs
@@ -2,11 +2,10 @@
// Make me compile without changing the function signature!
// Execute `rustlings hint strings2` for hints :)
-// 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) {
println!("That is a color word I know!");
} else {
println!("That is not a color word I know.");
diff --git a/exercises/structs/structs1.rs b/exercises/structs/structs1.rs
index 6d0b2f4..ac2fb27 100644
--- a/exercises/structs/structs1.rs
+++ b/exercises/structs/structs1.rs
@@ -1,13 +1,13 @@
// structs1.rs
// Address all the TODOs to make the tests pass!
-// I AM NOT DONE
-struct ColorClassicStruct {
- // TODO: Something goes here
+struct ColorClassicStruct<'a> {
+ name: &'a str,
+ hex: &'a str,
}
-struct ColorTupleStruct(/* TODO: Something goes here */);
+struct ColorTupleStruct<'a>(&'a str, &'a str);
#[derive(Debug)]
struct UnitStruct;
@@ -18,8 +18,7 @@ mod tests {
#[test]
fn classic_c_structs() {
- // TODO: Instantiate a classic c struct!
- // let green =
+ let green = ColorClassicStruct{name: "green", hex: "#00FF00"};
assert_eq!(green.name, "green");
assert_eq!(green.hex, "#00FF00");
@@ -27,8 +26,7 @@ mod tests {
#[test]
fn tuple_structs() {
- // TODO: Instantiate a tuple struct!
- // let green =
+ let green = ColorTupleStruct("green", "#00FF00");
assert_eq!(green.0, "green");
assert_eq!(green.1, "#00FF00");
@@ -36,8 +34,7 @@ mod tests {
#[test]
fn unit_structs() {
- // TODO: Instantiate a unit struct!
- // let unit_struct =
+ let unit_struct = UnitStruct{};
let message = format!("{:?}s are fun!", unit_struct);
assert_eq!(message, "UnitStructs are fun!");
diff --git a/exercises/structs/structs2.rs b/exercises/structs/structs2.rs
index 0699137..806c3a1 100644
--- a/exercises/structs/structs2.rs
+++ b/exercises/structs/structs2.rs
@@ -2,7 +2,6 @@
// Address all the TODOs to make the tests pass!
// No hints, just do it!
-// I AM NOT DONE
#[derive(Debug)]
struct Order {
@@ -34,8 +33,7 @@ mod tests {
#[test]
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: "Hacker in Rust".to_string(), 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);
diff --git a/exercises/test2.rs b/exercises/test2.rs
index d01606c..d8ce1e8 100644
--- a/exercises/test2.rs
+++ b/exercises/test2.rs
@@ -7,7 +7,6 @@
// you think each value is. That is, add either `string_slice` or `string`
// before the parentheses on each line. If you're right, it will compile!
-// I AM NOT DONE
fn string_slice(arg: &str) {
println!("{}", arg);
@@ -17,14 +16,14 @@ 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()); //https://doc.rust-lang.org/std/borrow/trait.ToOwned.html
+ string("nice weather".into());
+ string(format!("Interpolation {}", "Station")); //format Marco println String type https://doc.rust-lang.org/std/fmt/
+ 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()); //change thevalue and it will create a new String https://doc.rust-lang.org/std/primitive.str.html#method.to_lowercase
}