Update Exercises Directory Names to Reflect Order

6 files changed, 0 insertions, 587 deletions

diff --git a/exercises/conversions/README.md b/exercises/conversions/README.md
deleted file mode 100644
index 619a78c..0000000
--- a/exercises/conversions/README.md
+++ /dev/null
@@ -1,23 +0,0 @@
-# Type conversions
-
-Rust offers a multitude of ways to convert a value of a given type into another type.
-
-The simplest form of type conversion is a type cast expression. It is denoted with the binary operator `as`. For instance, `println!("{}", 1 + 1.0);` would not compile, since `1` is an integer while `1.0` is a float. However, `println!("{}", 1 as f32 + 1.0)` should compile. The exercise [`using_as`](using_as.rs) tries to cover this.
-
-Rust also offers traits that facilitate type conversions upon implementation. These traits can be found under the [`convert`](https://doc.rust-lang.org/std/convert/index.html) module.
-The traits are the following:
-
-- `From` and `Into` covered in [`from_into`](from_into.rs)
-- `TryFrom` and `TryInto` covered in [`try_from_into`](try_from_into.rs)
-- `AsRef` and `AsMut` covered in [`as_ref_mut`](as_ref_mut.rs)
-
-Furthermore, the `std::str` module offers a trait called [`FromStr`](https://doc.rust-lang.org/std/str/trait.FromStr.html) which helps with converting strings into target types via the `parse` method on strings. If properly implemented for a given type `Person`, then `let p: Person = "Mark,20".parse().unwrap()` should both compile and run without panicking.
-
-These should be the main ways ***within the standard library*** to convert data into your desired types.
-
-## Further information
-
-These are not directly covered in the book, but the standard library has a great documentation for it.
-
-- [conversions](https://doc.rust-lang.org/std/convert/index.html)
-- [`FromStr` trait](https://doc.rust-lang.org/std/str/trait.FromStr.html)
diff --git a/exercises/conversions/as_ref_mut.rs b/exercises/conversions/as_ref_mut.rs
deleted file mode 100644
index 2ba9e3f..0000000
--- a/exercises/conversions/as_ref_mut.rs
+++ /dev/null
@@ -1,65 +0,0 @@
-// as_ref_mut.rs
-//
-// AsRef and AsMut allow for cheap reference-to-reference conversions. 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.
-//
-// Execute `rustlings hint as_ref_mut` or use the `hint` watch subcommand for a
-// hint.
-
-// I AM NOT DONE
-
-// Obtain the number of bytes (not characters) in the given argument.
-// TODO: Add the AsRef trait appropriately as a trait bound.
-fn byte_counter<T>(arg: T) -> usize {
-    arg.as_ref().as_bytes().len()
-}
-
-// Obtain the number of characters (not bytes) in the given argument.
-// TODO: Add the AsRef trait appropriately as a trait bound.
-fn char_counter<T>(arg: T) -> usize {
-    arg.as_ref().chars().count()
-}
-
-// Squares a number using as_mut().
-// TODO: Add the appropriate trait bound.
-fn num_sq<T>(arg: &mut T) {
-    // TODO: Implement the function body.
-    ???
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn different_counts() {
-        let s = "Café au lait";
-        assert_ne!(char_counter(s), byte_counter(s));
-    }
-
-    #[test]
-    fn same_counts() {
-        let s = "Cafe au lait";
-        assert_eq!(char_counter(s), byte_counter(s));
-    }
-
-    #[test]
-    fn different_counts_using_string() {
-        let s = String::from("Café au lait");
-        assert_ne!(char_counter(s.clone()), byte_counter(s));
-    }
-
-    #[test]
-    fn same_counts_using_string() {
-        let s = String::from("Cafe au lait");
-        assert_eq!(char_counter(s.clone()), byte_counter(s));
-    }
-
-    #[test]
-    fn mut_box() {
-        let mut num: Box<u32> = Box::new(3);
-        num_sq(&mut num);
-        assert_eq!(*num, 9);
-    }
-}
diff --git a/exercises/conversions/from_into.rs b/exercises/conversions/from_into.rs
deleted file mode 100644
index 60911f3..0000000
--- a/exercises/conversions/from_into.rs
+++ /dev/null
@@ -1,140 +0,0 @@
-// from_into.rs
-//
-// The From trait is used for value-to-value conversions. If From is implemented
-// correctly for a type, the Into trait should work conversely. You can read
-// more about it at https://doc.rust-lang.org/std/convert/trait.From.html
-//
-// Execute `rustlings hint from_into` or use the `hint` watch subcommand for a
-// hint.
-
-#[derive(Debug)]
-struct Person {
-    name: String,
-    age: usize,
-}
-
-// We implement the Default trait to use it as a fallback
-// when the provided string is not convertible into a Person object
-impl Default for Person {
-    fn default() -> Person {
-        Person {
-            name: String::from("John"),
-            age: 30,
-        }
-    }
-}
-
-// Your task is to complete this implementation in order for the line `let p =
-// Person::from("Mark,20")` to compile Please note that you'll need to parse the
-// age component into a `usize` with something like `"4".parse::<usize>()`. The
-// outcome of this needs to be handled appropriately.
-//
-// Steps:
-// 1. If the length of the provided string is 0, then return the default of
-//    Person.
-// 2. Split the given string on the commas present in it.
-// 3. Extract the first element from the split operation and use it as the name.
-// 4. If the name is empty, then return the default of Person.
-// 5. Extract the other element from the split operation and parse it into a
-//    `usize` as the age.
-// If while parsing the age, something goes wrong, then return the default of
-// Person Otherwise, then return an instantiated Person object with the results
-
-// I AM NOT DONE
-
-impl From<&str> for Person {
-    fn from(s: &str) -> Person {
-    }
-}
-
-fn main() {
-    // Use the `from` function
-    let p1 = Person::from("Mark,20");
-    // Since From is implemented for Person, we should be able to use Into
-    let p2: Person = "Gerald,70".into();
-    println!("{:?}", p1);
-    println!("{:?}", p2);
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-    #[test]
-    fn test_default() {
-        // Test that the default person is 30 year old John
-        let dp = Person::default();
-        assert_eq!(dp.name, "John");
-        assert_eq!(dp.age, 30);
-    }
-    #[test]
-    fn test_bad_convert() {
-        // Test that John is returned when bad string is provided
-        let p = Person::from("");
-        assert_eq!(p.name, "John");
-        assert_eq!(p.age, 30);
-    }
-    #[test]
-    fn test_good_convert() {
-        // Test that "Mark,20" works
-        let p = Person::from("Mark,20");
-        assert_eq!(p.name, "Mark");
-        assert_eq!(p.age, 20);
-    }
-    #[test]
-    fn test_bad_age() {
-        // Test that "Mark,twenty" will return the default person due to an
-        // error in parsing age
-        let p = Person::from("Mark,twenty");
-        assert_eq!(p.name, "John");
-        assert_eq!(p.age, 30);
-    }
-
-    #[test]
-    fn test_missing_comma_and_age() {
-        let p: Person = Person::from("Mark");
-        assert_eq!(p.name, "John");
-        assert_eq!(p.age, 30);
-    }
-
-    #[test]
-    fn test_missing_age() {
-        let p: Person = Person::from("Mark,");
-        assert_eq!(p.name, "John");
-        assert_eq!(p.age, 30);
-    }
-
-    #[test]
-    fn test_missing_name() {
-        let p: Person = Person::from(",1");
-        assert_eq!(p.name, "John");
-        assert_eq!(p.age, 30);
-    }
-
-    #[test]
-    fn test_missing_name_and_age() {
-        let p: Person = Person::from(",");
-        assert_eq!(p.name, "John");
-        assert_eq!(p.age, 30);
-    }
-
-    #[test]
-    fn test_missing_name_and_invalid_age() {
-        let p: Person = Person::from(",one");
-        assert_eq!(p.name, "John");
-        assert_eq!(p.age, 30);
-    }
-
-    #[test]
-    fn test_trailing_comma() {
-        let p: Person = Person::from("Mike,32,");
-        assert_eq!(p.name, "Mike");
-        assert_eq!(p.age, 32);
-    }
-
-    #[test]
-    fn test_trailing_comma_and_some_string() {
-        let p: Person = Person::from("Mike,32,man");
-        assert_eq!(p.name, "Mike");
-        assert_eq!(p.age, 32);
-    }
-}
diff --git a/exercises/conversions/from_str.rs b/exercises/conversions/from_str.rs
deleted file mode 100644
index 34472c3..0000000
--- a/exercises/conversions/from_str.rs
+++ /dev/null
@@ -1,133 +0,0 @@
-// from_str.rs
-//
-// This is similar to from_into.rs, but this time we'll implement `FromStr` and
-// return errors instead of falling back to a default value. Additionally, upon
-// implementing FromStr, you can use the `parse` method on strings to generate
-// an object of the implementor type. You can read more about it at
-// https://doc.rust-lang.org/std/str/trait.FromStr.html
-//
-// Execute `rustlings hint from_str` or use the `hint` watch subcommand for a
-// hint.
-
-use std::num::ParseIntError;
-use std::str::FromStr;
-
-#[derive(Debug, PartialEq)]
-struct Person {
-    name: String,
-    age: usize,
-}
-
-// We will use this error type for the `FromStr` implementation.
-#[derive(Debug, PartialEq)]
-enum ParsePersonError {
-    // Empty input string
-    Empty,
-    // Incorrect number of fields
-    BadLen,
-    // Empty name field
-    NoName,
-    // Wrapped error from parse::<usize>()
-    ParseInt(ParseIntError),
-}
-
-// I AM NOT DONE
-
-// Steps:
-// 1. If the length of the provided string is 0, an error should be returned
-// 2. Split the given string on the commas present in it
-// 3. Only 2 elements should be returned from the split, otherwise return an
-//    error
-// 4. Extract the first element from the split operation and use it as the name
-// 5. Extract the other element from the split operation and parse it into a
-//    `usize` as the age with something like `"4".parse::<usize>()`
-// 6. If while extracting the name and the age something goes wrong, an error
-//    should be returned
-// If everything goes well, then return a Result of a Person object
-//
-// As an aside: `Box<dyn Error>` implements `From<&'_ str>`. This means that if
-// you want to return a string error message, you can do so via just using
-// return `Err("my error message".into())`.
-
-impl FromStr for Person {
-    type Err = ParsePersonError;
-    fn from_str(s: &str) -> Result<Person, Self::Err> {
-    }
-}
-
-fn main() {
-    let p = "Mark,20".parse::<Person>().unwrap();
-    println!("{:?}", p);
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn empty_input() {
-        assert_eq!("".parse::<Person>(), Err(ParsePersonError::Empty));
-    }
-    #[test]
-    fn good_input() {
-        let p = "John,32".parse::<Person>();
-        assert!(p.is_ok());
-        let p = p.unwrap();
-        assert_eq!(p.name, "John");
-        assert_eq!(p.age, 32);
-    }
-    #[test]
-    fn missing_age() {
-        assert!(matches!(
-            "John,".parse::<Person>(),
-            Err(ParsePersonError::ParseInt(_))
-        ));
-    }
-
-    #[test]
-    fn invalid_age() {
-        assert!(matches!(
-            "John,twenty".parse::<Person>(),
-            Err(ParsePersonError::ParseInt(_))
-        ));
-    }
-
-    #[test]
-    fn missing_comma_and_age() {
-        assert_eq!("John".parse::<Person>(), Err(ParsePersonError::BadLen));
-    }
-
-    #[test]
-    fn missing_name() {
-        assert_eq!(",1".parse::<Person>(), Err(ParsePersonError::NoName));
-    }
-
-    #[test]
-    fn missing_name_and_age() {
-        assert!(matches!(
-            ",".parse::<Person>(),
-            Err(ParsePersonError::NoName | ParsePersonError::ParseInt(_))
-        ));
-    }
-
-    #[test]
-    fn missing_name_and_invalid_age() {
-        assert!(matches!(
-            ",one".parse::<Person>(),
-            Err(ParsePersonError::NoName | ParsePersonError::ParseInt(_))
-        ));
-    }
-
-    #[test]
-    fn trailing_comma() {
-        assert_eq!("John,32,".parse::<Person>(), Err(ParsePersonError::BadLen));
-    }
-
-    #[test]
-    fn trailing_comma_and_some_string() {
-        assert_eq!(
-            "John,32,man".parse::<Person>(),
-            Err(ParsePersonError::BadLen)
-        );
-    }
-}
diff --git a/exercises/conversions/try_from_into.rs b/exercises/conversions/try_from_into.rs
deleted file mode 100644
index 32d6ef3..0000000
--- a/exercises/conversions/try_from_into.rs
+++ /dev/null
@@ -1,193 +0,0 @@
-// try_from_into.rs
-//
-// TryFrom is a simple and safe type conversion that may fail in a controlled
-// way under some circumstances. Basically, this is the same as From. The main
-// difference is that this should return a Result type instead of the target
-// type itself. You can read more about it at
-// https://doc.rust-lang.org/std/convert/trait.TryFrom.html
-//
-// Execute `rustlings hint try_from_into` or use the `hint` watch subcommand for
-// a hint.
-
-use std::convert::{TryFrom, TryInto};
-
-#[derive(Debug, PartialEq)]
-struct Color {
-    red: u8,
-    green: u8,
-    blue: u8,
-}
-
-// We will use this error type for these `TryFrom` conversions.
-#[derive(Debug, PartialEq)]
-enum IntoColorError {
-    // Incorrect length of slice
-    BadLen,
-    // Integer conversion error
-    IntConversion,
-}
-
-// 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, an array of three integers, and a slice of integers.
-//
-// Note that the implementation for tuple and array will be checked at compile
-// time, but the slice implementation needs to check the slice length! Also note
-// that correct RGB color values must be integers in the 0..=255 range.
-
-// Tuple implementation
-impl TryFrom<(i16, i16, i16)> for Color {
-    type Error = IntoColorError;
-    fn try_from(tuple: (i16, i16, i16)) -> Result<Self, Self::Error> {
-    }
-}
-
-// Array implementation
-impl TryFrom<[i16; 3]> for Color {
-    type Error = IntoColorError;
-    fn try_from(arr: [i16; 3]) -> Result<Self, Self::Error> {
-    }
-}
-
-// Slice implementation
-impl TryFrom<&[i16]> for Color {
-    type Error = IntoColorError;
-    fn try_from(slice: &[i16]) -> Result<Self, Self::Error> {
-    }
-}
-
-fn main() {
-    // Use the `try_from` function
-    let c1 = Color::try_from((183, 65, 14));
-    println!("{:?}", c1);
-
-    // Since TryFrom is implemented for Color, we should be able to use TryInto
-    let c2: Result<Color, _> = [183, 65, 14].try_into();
-    println!("{:?}", c2);
-
-    let v = vec![183, 65, 14];
-    // With slice we should use `try_from` function
-    let c3 = Color::try_from(&v[..]);
-    println!("{:?}", c3);
-    // or take slice within round brackets and use TryInto
-    let c4: Result<Color, _> = (&v[..]).try_into();
-    println!("{:?}", c4);
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn test_tuple_out_of_range_positive() {
-        assert_eq!(
-            Color::try_from((256, 1000, 10000)),
-            Err(IntoColorError::IntConversion)
-        );
-    }
-    #[test]
-    fn test_tuple_out_of_range_negative() {
-        assert_eq!(
-            Color::try_from((-1, -10, -256)),
-            Err(IntoColorError::IntConversion)
-        );
-    }
-    #[test]
-    fn test_tuple_sum() {
-        assert_eq!(
-            Color::try_from((-1, 255, 255)),
-            Err(IntoColorError::IntConversion)
-        );
-    }
-    #[test]
-    fn test_tuple_correct() {
-        let c: Result<Color, _> = (183, 65, 14).try_into();
-        assert!(c.is_ok());
-        assert_eq!(
-            c.unwrap(),
-            Color {
-                red: 183,
-                green: 65,
-                blue: 14
-            }
-        );
-    }
-    #[test]
-    fn test_array_out_of_range_positive() {
-        let c: Result<Color, _> = [1000, 10000, 256].try_into();
-        assert_eq!(c, Err(IntoColorError::IntConversion));
-    }
-    #[test]
-    fn test_array_out_of_range_negative() {
-        let c: Result<Color, _> = [-10, -256, -1].try_into();
-        assert_eq!(c, Err(IntoColorError::IntConversion));
-    }
-    #[test]
-    fn test_array_sum() {
-        let c: Result<Color, _> = [-1, 255, 255].try_into();
-        assert_eq!(c, Err(IntoColorError::IntConversion));
-    }
-    #[test]
-    fn test_array_correct() {
-        let c: Result<Color, _> = [183, 65, 14].try_into();
-        assert!(c.is_ok());
-        assert_eq!(
-            c.unwrap(),
-            Color {
-                red: 183,
-                green: 65,
-                blue: 14
-            }
-        );
-    }
-    #[test]
-    fn test_slice_out_of_range_positive() {
-        let arr = [10000, 256, 1000];
-        assert_eq!(
-            Color::try_from(&arr[..]),
-            Err(IntoColorError::IntConversion)
-        );
-    }
-    #[test]
-    fn test_slice_out_of_range_negative() {
-        let arr = [-256, -1, -10];
-        assert_eq!(
-            Color::try_from(&arr[..]),
-            Err(IntoColorError::IntConversion)
-        );
-    }
-    #[test]
-    fn test_slice_sum() {
-        let arr = [-1, 255, 255];
-        assert_eq!(
-            Color::try_from(&arr[..]),
-            Err(IntoColorError::IntConversion)
-        );
-    }
-    #[test]
-    fn test_slice_correct() {
-        let v = vec![183, 65, 14];
-        let c: Result<Color, _> = Color::try_from(&v[..]);
-        assert!(c.is_ok());
-        assert_eq!(
-            c.unwrap(),
-            Color {
-                red: 183,
-                green: 65,
-                blue: 14
-            }
-        );
-    }
-    #[test]
-    fn test_slice_excess_length() {
-        let v = vec![0, 0, 0, 0];
-        assert_eq!(Color::try_from(&v[..]), Err(IntoColorError::BadLen));
-    }
-    #[test]
-    fn test_slice_insufficient_length() {
-        let v = vec![0, 0];
-        assert_eq!(Color::try_from(&v[..]), Err(IntoColorError::BadLen));
-    }
-}
diff --git a/exercises/conversions/using_as.rs b/exercises/conversions/using_as.rs
deleted file mode 100644
index 414cef3..0000000
--- a/exercises/conversions/using_as.rs
+++ /dev/null
@@ -1,33 +0,0 @@
-// using_as.rs
-//
-// Type casting in Rust is done via the usage of the `as` operator. Please note
-// that the `as` operator is not only used when type casting. It also helps with
-// renaming imports.
-//
-// The goal is to make sure that the division does not fail to compile and
-// returns the proper type.
-//
-// Execute `rustlings hint using_as` or use the `hint` watch subcommand for a
-// hint.
-
-// I AM NOT DONE
-
-fn average(values: &[f64]) -> f64 {
-    let total = values.iter().sum::<f64>();
-    total / values.len()
-}
-
-fn main() {
-    let values = [3.5, 0.3, 13.0, 11.7];
-    println!("{}", average(&values));
-}
-
-#[cfg(test)]
-mod tests {
-    use super::*;
-
-    #[test]
-    fn returns_proper_type_and_value() {
-        assert_eq!(average(&[3.5, 0.3, 13.0, 11.7]), 7.125);
-    }
-}