Решение на упр.04 задача 1 от Илиян Копривчин
Към профила на Илиян Копривчин
Резултати
- 2 точки от тестове
- 0 бонус точки
- 2 точки общо
- 2 успешни тест(а)
- 0 неуспешни тест(а)
Код
use std::fmt::Debug;
#[derive(Debug, Clone)]
enum Spec {
SI,
IS,
KN,
I,
M
}
impl Spec {
fn to_str(&self) -> &str {
match self {
Spec::SI => "SI",
Spec::IS => "IS",
Spec::KN => "KN",
Spec::I => "I",
Spec::M => "M",
}
}
}
#[derive(Debug, Clone)]
enum Title {
Assistant, Doctor, Professor
}
impl Title {
fn to_str(&self) -> &str {
match self {
Title::Assistant => "Assistant",
Title::Doctor => "Doctor",
Title::Professor => "Professor",
}
}
}
trait ToJson {
fn to_json(&self) -> String;
}
#[derive(Debug, Clone)]
struct Student {
name: String,
age: u32,
specialty: Spec,
}
impl Student {
fn new(name: String, age: u32, specialty: Spec) -> Self {
Student { name, age, specialty }
}
}
impl ToJson for Student {
fn to_json(&self) -> String {
format!(
"{{\"name\":\"{}\",\"age\":{},\"spec\":\"{}\"}}",
self.name,
self.age,
self.specialty.to_str()
)
}
}
#[derive(Debug, Clone)]
struct Teacher {
name: String,
age: u32,
teaching_specialties: Vec<Spec>,
academic_title: Title,
}
impl Teacher {
fn new(name: String, age: u32, teaching_specialties: Vec<Spec>, academic_title: Title) -> Self {
Teacher {
name,
age,
teaching_specialties,
academic_title,
}
}
}
impl ToJson for Teacher {
fn to_json(&self) -> String {
let specs_json: Vec<String> = self.teaching_specialties.iter().map(|s| format!("\"{}\"", s.to_str())).collect();
format!(
"{{\"name\":\"{}\",\"age\":{},\"spec\":[{}],\"title\":\"{}\"}}",
self.name,
self.age,
specs_json.join(","),
self.academic_title.to_str()
)
}
}
#[derive(Debug)]
struct University<TeacherType> {
name: String,
students: Vec<Student>,
teachers: Vec<TeacherType>,
}
impl<TeacherType> University<TeacherType> {
fn new(name: String, students: Vec<Student>, teachers: Vec<TeacherType>) -> Self {
University {
name,
students,
teachers,
}
}
}
impl<TeacherType: ToJson + Debug> ToJson for University<TeacherType> {
fn to_json(&self) -> String {
let students_json: Vec<String> = self.students.iter().map(|s| s.to_json()).collect();
let teachers_json: Vec<String> = self.teachers.iter().map(|t| t.to_json()).collect();
format!(
"{{\"name\":\"{}\",\"students\":[{}],\"teachers\":[{}]}}",
self.name,
students_json.join(","),
teachers_json.join(",")
)
}
}
Лог от изпълнението
Updating crates.io index
Locking 17 packages to latest compatible versions
Compiling proc-macro2 v1.0.103
Compiling unicode-ident v1.0.22
Compiling quote v1.0.41
Compiling futures-core v0.3.31
Compiling futures-sink v0.3.31
Compiling futures-channel v0.3.31
Compiling pin-project-lite v0.2.16
Compiling pin-utils v0.1.0
Compiling futures-task v0.3.31
Compiling syn v2.0.109
Compiling futures-io v0.3.31
Compiling memchr v2.7.6
Compiling slab v0.4.11
Compiling solution v0.1.0 (/tmp/d20251106-1757769-1iwo1l7/solution)
warning: enum `Spec` is never used
--> src/lib.rs:4:6
|
4 | enum Spec {
| ^^^^
|
= note: `#[warn(dead_code)]` on by default
warning: method `to_str` is never used
--> src/lib.rs:13:8
|
12 | impl Spec {
| --------- method in this implementation
13 | fn to_str(&self) -> &str {
| ^^^^^^
warning: enum `Title` is never used
--> src/lib.rs:25:6
|
25 | enum Title {
| ^^^^^
warning: method `to_str` is never used
--> src/lib.rs:30:8
|
29 | impl Title {
| ---------- method in this implementation
30 | fn to_str(&self) -> &str {
| ^^^^^^
warning: trait `ToJson` is never used
--> src/lib.rs:39:7
|
39 | trait ToJson {
| ^^^^^^
warning: struct `Student` is never constructed
--> src/lib.rs:44:8
|
44 | struct Student {
| ^^^^^^^
warning: associated function `new` is never used
--> src/lib.rs:51:8
|
50 | impl Student {
| ------------ associated function in this implementation
51 | fn new(name: String, age: u32, specialty: Spec) -> Self {
| ^^^
warning: struct `Teacher` is never constructed
--> src/lib.rs:68:8
|
68 | struct Teacher {
| ^^^^^^^
warning: associated function `new` is never used
--> src/lib.rs:76:8
|
75 | impl Teacher {
| ------------ associated function in this implementation
76 | fn new(name: String, age: u32, teaching_specialties: Vec<Spec>, academic_title: Title) -> Self {
| ^^^
warning: struct `University` is never constructed
--> src/lib.rs:100:8
|
100 | struct University<TeacherType> {
| ^^^^^^^^^^
warning: associated function `new` is never used
--> src/lib.rs:107:8
|
106 | impl<TeacherType> University<TeacherType> {
| ----------------------------------------- associated function in this implementation
107 | fn new(name: String, students: Vec<Student>, teachers: Vec<TeacherType>) -> Self {
| ^^^
warning: `solution` (lib) generated 11 warnings
Compiling futures-macro v0.3.31
Compiling futures-util v0.3.31
Compiling futures-executor v0.3.31
Compiling futures v0.3.31
warning: variants `KN`, `I`, and `M` are never constructed
--> tests/../src/lib.rs:7:5
|
4 | enum Spec {
| ---- variants in this enum
...
7 | KN,
| ^^
8 | I,
| ^
9 | M
| ^
|
= note: `Spec` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
= note: `#[warn(dead_code)]` on by default
warning: variants `Assistant` and `Doctor` are never constructed
--> tests/../src/lib.rs:26:5
|
25 | enum Title {
| ----- variants in this enum
26 | Assistant, Doctor, Professor
| ^^^^^^^^^ ^^^^^^
|
= note: `Title` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
warning: `solution` (test "solution_test") generated 2 warnings
Finished `test` profile [unoptimized + debuginfo] target(s) in 8.17s
Running tests/solution_test.rs (target/debug/deps/solution_test-8c2c5f784503f204)
running 2 tests
test solution_test::test_basic2 ... ok
test solution_test::test_basic ... ok
test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s