All the exercises complete

exercises/clippy/clippy1.rs

@@ -6,12 +6,10 @@
 // check clippy's suggestions from the output to solve the exercise.
 // Execute `rustlings hint clippy1` for hints :)
 
-// I AM NOT DONE
-
 fn main() {
     let x = 1.2331f64;
     let y = 1.2332f64;
-    if y != x {
+    if (y - x).abs() != 0.0 {
         println!("Success!");
     }
 }

exercises/clippy/clippy2.rs

@@ -1,12 +1,10 @@
 // clippy2.rs
 // Make me compile! Execute `rustlings hint clippy2` for hints :)
 
-// I AM NOT DONE
-
 fn main() {
     let mut res = 42;
     let option = Some(12);
-    for x in option {
+    if let Some(x) = option {
         res += x;
     }
     println!("{}", res);

exercises/conversions/as_ref_mut.rs

@@ -2,17 +2,15 @@
 // Read more about them at https://doc.rust-lang.org/std/convert/trait.AsRef.html
 // and https://doc.rust-lang.org/std/convert/trait.AsMut.html, respectively.
 
-// I AM NOT DONE
-
 // Obtain the number of bytes (not characters) in the given argument
 // Add the AsRef trait appropriately as a trait bound
-fn byte_counter<T>(arg: T) -> usize {
+fn byte_counter<T: AsRef<str>>(arg: T) -> usize {
     arg.as_ref().as_bytes().len()
 }
 
 // Obtain the number of characters (not bytes) in the given argument
 // Add the AsRef trait appropriately as a trait bound
-fn char_counter<T>(arg: T) -> usize {
+fn char_counter<T: AsRef<str>>(arg: T) -> usize {
     arg.as_ref().chars().count()
 }
 

exercises/conversions/from_into.rs

@@ -37,6 +37,18 @@ impl Default for Person {
 
 impl From<&str> for Person {
     fn from(s: &str) -> Person {
+        let person: Vec<&str> = s.split(",").collect();
+
+        match person.len() {
+            2 => match person[0].to_owned().len() {
+                0 => Err(String::from("Error")),
+                _ => Ok(Person {
+                    name: person[0].to_owned(),
+                    age: person[1].parse::<usize>().unwrap(),
+                }),
+            },
+            _ => Err(String::from("Error")),
+        }
     }
 }
 

exercises/conversions/from_str.rs

@@ -10,7 +10,6 @@ struct Person {
     age: usize,
 }
 
-// I AM NOT DONE
 // Steps:
 // 1. If the length of the provided string is 0, then return an error
 // 2. Split the given string on the commas present in it
@@ -23,6 +22,18 @@ struct Person {
 impl FromStr for Person {
     type Err = String;
     fn from_str(s: &str) -> Result<Person, Self::Err> {
+        let person: Vec<&str> = s.split(",").collect();
+
+        match person.len() {
+            2 => match person[0].to_owned().len() {
+                0 => Err(String::from("Error")),
+                _ => Ok(Person {
+                    name: person[0].to_owned(),
+                    age: person[1].parse::<usize>().unwrap(),
+                }),
+            },
+            _ => Err(String::from("Error")),
+        }
     }
 }
 

exercises/conversions/try_from_into.rs

@@ -11,8 +11,6 @@ struct Color {
     blue: u8,
 }
 
-// I AM NOT DONE
-
 // Your task is to complete this implementation
 // and return an Ok result of inner type Color.
 // You need to create an implementation for a tuple of three integers,
@@ -25,19 +23,56 @@ struct Color {
 // Tuple implementation
 impl TryFrom<(i16, i16, i16)> for Color {
     type Error = String;
-    fn try_from(tuple: (i16, i16, i16)) -> Result<Self, Self::Error> {}
+    fn try_from(tuple: (i16, i16, i16)) -> Result<Self, Self::Error> {
+        let (r, g, b) = tuple;
+        if (0..=255).contains(&r) && (0..=255).contains(&g) && (0..=255).contains(&b) {
+            Ok(Color {
+                red: r as u8,
+                green: g as u8,
+                blue: b as u8,
+            })
+        } else {
+            Err(String::from("Error occured."))
+        }
+    }
 }
 
 // Array implementation
 impl TryFrom<[i16; 3]> for Color {
     type Error = String;
-    fn try_from(arr: [i16; 3]) -> Result<Self, Self::Error> {}
+    fn try_from(arr: [i16; 3]) -> Result<Self, Self::Error> {
+        if (0..=255).contains(&arr[0]) && (0..=255).contains(&arr[1]) && (0..=255).contains(&arr[2])
+        {
+            Ok(Color {
+                red: arr[0] as u8,
+                green: arr[1] as u8,
+                blue: arr[2] as u8,
+            })
+        } else {
+            Err(String::from("Error occured."))
+        }
+    }
 }
 
 // Slice implementation
 impl TryFrom<&[i16]> for Color {
     type Error = String;
-    fn try_from(slice: &[i16]) -> Result<Self, Self::Error> {}
+    fn try_from(slice: &[i16]) -> Result<Self, Self::Error> {
+        if slice.len() != 3 {
+            Err(String::from("Length should be 3."))
+        } else if (0..=255).contains(&slice[0])
+            && (0..=255).contains(&slice[1])
+            && (0..=255).contains(&slice[2])
+        {
+            Ok(Color {
+                red: slice[0] as u8,
+                green: slice[1] as u8,
+                blue: slice[2] as u8,
+            })
+        } else {
+            Err(String::from("Error occured."))
+        }
+    }
 }
 
 fn main() {

exercises/conversions/using_as.rs

@@ -5,11 +5,9 @@
 // The goal is to make sure that the division does not fail to compile
 // and returns the proper type.
 
-// I AM NOT DONE
-
 fn average(values: &[f64]) -> f64 {
     let total = values.iter().fold(0.0, |a, b| a + b);
-    total / values.len()
+    total / values.len() as f64
 }
 
 fn main() {

exercises/quiz4.rs

@@ -5,7 +5,6 @@
 
 // Write a macro that passes the quiz! No hints this time, you can do it!
 
-// I AM NOT DONE
 #[macro_use]
 mod macros {
     macro_rules! my_macro {