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file mode 100644 index 00000000..811a90f8 --- /dev/null +++ b/rust_session/Assignment/reg_Assgn2/Cargo.toml @@ -0,0 +1,6 @@ +[package] +name = "student_registry" +version = "0.1.0" +edition = "2021" +[dependencies] +uuid = { version = "1", features = ["v4"] } \ No newline at end of file diff --git a/rust_session/Assignment/reg_Assgn2/src/grade.rs b/rust_session/Assignment/reg_Assgn2/src/grade.rs new file mode 100644 index 00000000..50a5cfcf --- /dev/null +++ b/rust_session/Assignment/reg_Assgn2/src/grade.rs @@ -0,0 +1,31 @@ +#[derive(Debug, Clone)] +pub enum Grade { + First, + Second, + Third, +} + +impl Grade { + pub fn as_str(&self) -> &str { + match self { + Grade::First => "Cohort 1", + Grade::Second => "Cohort 2", + Grade::Third => "Cohort 3", + } + } +} + +#[derive(Debug, Clone)] +pub enum Sex { + Male, + Female, +} + +impl Sex { + pub fn to_str(&self) { + match self { + Sex::Male => println!("male: 👨🏾"), + Sex::Female => println!("female: 👧🏾"), + } + } +} diff --git a/rust_session/Assignment/reg_Assgn2/src/main.rs b/rust_session/Assignment/reg_Assgn2/src/main.rs new file mode 100644 index 00000000..62cd397b --- /dev/null +++ b/rust_session/Assignment/reg_Assgn2/src/main.rs @@ -0,0 +1,69 @@ +mod grade; +mod registry; +mod student_struct; +mod utils; + +use grade::{Grade, Sex}; +use registry::Registry; +use student_struct::Student; + +fn main() { + // let g = Grade::Second; + // println!("{}", g.as_str()); // "2nd Year" + // println!("{:?}", g); + + // let ss = Student::new(); + // println!("stund") + + // let mut reg = Registry::new(); + + // reg.add("Victor", 20, Grade::First, 78.5); + // reg.add("Kosi", 22, Grade::Second, 64.0); + // reg.add("Yusrah", 21, Grade::First, 91.0); + + // reg.list_all();] + + // let sex = Sex::Male; + // println!("sex: {:?}", sex.to_str()); + + // let s: Student = Student::new(1, String::from("Testimony"), 16, Sex::Female, Grade::Third, 40.5); + // let s: Student = Student::new( + // 1, + // "Testimony".to_string(), + // 16, + // Sex::Female, + // Grade::Third, + // 40.5, + // ); + // println!("student here: {:#?}", s); + + // println!("student id: {}", s.id); + // println!("student name: {}", s.name); + // println!("student age: {}", s.age); + + + let mut reg = Registry::new(vec![]); + + reg.add("Testimony", 20, Sex::Female, Grade::Second, 20.5); + reg.add("Basongo", 22, Sex::Male, Grade::First, 72.0); + + reg.list_all(); + + // i cant get guess a UUID , so i need to grab the id first + if let Some(student) = reg.students.first() { + let id = student.id; // capture the Uuid + + println!("\n--- Found by UUID ---"); + reg.get_student(id); + + println!("\n--- Update name ---"); + reg.update_name(id, "Alice Updated"); + reg.get_student(id); + + println!("\n--- Delete ---"); + reg.delete_student(id); + } + + reg.list_all(); + +} diff --git a/rust_session/Assignment/reg_Assgn2/src/registry.rs b/rust_session/Assignment/reg_Assgn2/src/registry.rs new file mode 100644 index 00000000..906d2441 --- /dev/null +++ b/rust_session/Assignment/reg_Assgn2/src/registry.rs @@ -0,0 +1,88 @@ +use crate::grade::{Grade, Sex}; +use crate::student_struct::Student; +use uuid::Uuid; + +pub struct Registry { + pub students: Vec, +} + +impl Registry { + pub fn new(students: Vec) -> Registry { + Registry{students} + } + + pub fn add(&mut self, name: &str, age: u8, sex: Sex, grade: Grade, score: f32) { + let id = Uuid::new_v4(); + let student = Student::new(id, name.to_string(), age, sex, grade, score); + println!("Added: {} (ID {})", student.name, student.id); + self.students.push(student); + } + + pub fn list_all(&self) { + if self.students.is_empty() { + println!(" (no students enrolled yet)"); + return; + } + println!(" {:<36} {:<20} {:<6} {:<10} {}", "ID", "Name", "Age", "Grade", "Score"); + println!(" {}", "-".repeat(80)); + for student in &self.students { + println!( + " {:<36} {:<20} {:>6} {:<10} {:.1}", + student.id, student.name, student.age, student.grade.as_str(), student.score, + ); + } + } + + pub fn find_by_id(&self, id: Uuid) -> Option<&Student> { + self.students.iter().find(|s| s.id == id) + } + + pub fn get_student(&self, id: Uuid) { + match self.find_by_id(id) { + Some(s) => println!( + "ID: {}, Name: {}, Age: {}, Grade: {:?}, Score: {}", + s.id, s.name, s.age, s.grade, s.score + ), + None => println!("Student with ID {} not found.", id), + } + } + + pub fn update_name(&mut self, id: Uuid, new_name: &str) { + match self.students.iter_mut().find(|s| s.id == id) { + Some(s) => s.name = new_name.to_string(), + None => println!("Student with ID {} not found.", id), + } + } + + pub fn update_age(&mut self, id: Uuid, new_age: u8) { + match self.students.iter_mut().find(|s| s.id == id) { + Some(s) => s.age = new_age, + None => println!("Student with ID {} not found.", id), + } + } + + pub fn update_grade(&mut self, id: Uuid, input: &str) { + let new_grade = match input.to_lowercase().as_str() { + "first" => Some(Grade::First), + "second" => Some(Grade::Second), + "third" => Some(Grade::Third), + _ => { println!("Unknown grade: {}", input); None } + }; + if let Some(grade) = new_grade { + match self.students.iter_mut().find(|s| s.id == id) { + Some(s) => s.grade = grade, + None => println!("Student with ID {} not found.", id), + } + } + } + + pub fn delete_student(&mut self, id: Uuid) { + match self.students.iter().position(|s| s.id == id) { + Some(index) => { + self.students.remove(index); + println!("Deleted student {}", id); + } + None => println!("Student with ID {} not found.", id), + } + } +} \ No newline at end of file diff --git a/rust_session/Assignment/reg_Assgn2/src/registry_struct.rs b/rust_session/Assignment/reg_Assgn2/src/registry_struct.rs new file mode 100644 index 00000000..8b076a03 --- /dev/null +++ b/rust_session/Assignment/reg_Assgn2/src/registry_struct.rs @@ -0,0 +1,6 @@ +use crate::student_struct; + +pub struct Registry { + students: Vec, // Vec = "a list of Student values" + next_id: u32, // auto-increment counter for IDs +} \ No newline at end of file diff --git a/rust_session/Assignment/reg_Assgn2/src/student_struct.rs b/rust_session/Assignment/reg_Assgn2/src/student_struct.rs new file mode 100644 index 00000000..f2b8dd18 --- /dev/null +++ b/rust_session/Assignment/reg_Assgn2/src/student_struct.rs @@ -0,0 +1,19 @@ +use uuid::Uuid; +use crate::grade::{Grade, Sex}; + +#[derive(Debug, Clone)] // add Debug here +pub struct Student { + pub id: Uuid, + pub name: String, + pub age: u8, + pub sex: Sex, + pub grade: Grade, + pub score: f32, +} + + +impl Student { + pub fn new(id: Uuid, name: String, age: u8, sex: Sex, grade: Grade, score: f32) -> Student { + Student { id, name, age, sex, grade, score } + } +} \ No newline at end of file diff --git a/rust_session/Assignment/reg_Assgn2/src/utils.rs b/rust_session/Assignment/reg_Assgn2/src/utils.rs new file mode 100644 index 00000000..ab2c8eeb --- /dev/null +++ b/rust_session/Assignment/reg_Assgn2/src/utils.rs @@ -0,0 +1,3 @@ +// pub fn to_str(x: String) -> &'static str { +// x.as_str() +// }