Rust Fun

This repository contains a collection of Rust exercises built by @perezdid with the help of ChatGPT, an AI language model by OpenAI. The exercises are organized by lessons, and each exercise has been solved by the author with the assistance of ChatGPT, which provided feedback and corrections.

Lesson 1: Introduction

Topics: Printing, variables, basic operations, user input, and basic error handling.

• 1.1.1: Write a hello_world function that prints "hello world!".
• 1.2.1: Write a print_variables function that declares two variables, an integer and a floating-point number, and prints their values.
• 1.3.1: Write a print_operations function that takes two integer arguments and prints the sum, product, and difference of those integers.
• 1.4.1: Write a greeting function that asks the user for their name and prints a greeting message with their name.
• 1.4.2: Write a print_user_operations function that asks the user for two integer inputs and prints the sum, product, and difference of those integers.

Lesson 2: Control Flow

Topics: if/else statements, loops, pattern matching, error handling with Result.

• 2.1.1: Write an integer_sign function that asks the user for an integer input and prints if it's positive, negative, or zero.
• 2.1.2: Write an even_or_odd function that asks the user for an integer input and prints if it's even or odd.
• 2.2.1: Write a count_to_ten function that prints the numbers from 1 to 10 using a loop.
• 2.2.2: Write a factorial function that takes an integer input and returns its factorial using a loop.
• 2.3.1: Write an integer_sign_match function that asks the user for an integer input and prints if it's positive, negative, or zero using pattern matching.
• 2.3.2: Write a vowel_or_consonant function that asks the user for a lowercase letter input and prints if it's a vowel or a consonant using pattern matching.
• 2.4.1: Modify the print_user_operations function to use Result for error handling.
• 2.4.2: Modify the factorial function to use Result for error handling.

Lesson 3: Functions and Closures

Topics: Functions, function overloading, traits, closures.

• 3.1: Write an add function that takes two integers and returns their sum.
• 3.2: Write an is_prime function that takes an integer input and returns a boolean indicating if it's a prime number.
• 3.3: Write an is_even function that takes an integer input and returns a boolean indicating if it's even.
• 3.4: Write an add_generic function that takes two generic arguments and returns their sum using the Add trait.
• 3.5: Write an apply_twice function that takes a closure and an integer input, applies the closure twice, and returns the result.

Lesson 4: Structs, Enums, and Error Handling

Topics: Structs, enums, methods, error handling with Option and Result.

• 4.1: Define a Point struct and implement a distance_to_origin method.
• 4.2: Define a Rectangle struct and implement is_square and area methods.
• 4.3: Define a Shape enum and implement an area method for it.
• 4.4: Write a divide function that takes two floating-point numbers and returns their division using Option for error handling.
• 4.5: Modify the is_prime function to use Result for error handling.

Lesson 5: Collections

Topics: Vectors, iterators, and common methods.

• 5.1: Write a sum_vec function that takes a vector of integers and returns their sum.
• 5.2: Write a remove_duplicates function that takes a vector of integers and returns a new vector without duplicates.
• 5.3: Write a sum_even_numbers function that takes a vector of integers and returns the sum of even numbers.
• 5.4: Write a reverse_strings function that takes a vector of strings and returns a new vector with each string reversed.

Lesson 6: Error Handling and Advanced Topics

Topics: Advanced error handling, custom error types, working with the standard library, and refactoring code.

• 6.1: Write a first_character function that takes a string and returns an Option containing its first character.
• 6.2: Write a find_char function that takes a string and a character and returns an Option containing the index of the first occurrence of the character.
• 6.3: Define a ParseNameError enum with two variants, Empty and TooLong. Write a length_check function that takes a string and returns a Result with either the string itself or a ParseNameError.
• 6.4: Refactor the following functions to use the Result type for error handling: first_character_result, find_char_result.