finish till quiz3

This commit is contained in:
Sangeeth Sudheer 2024-02-02 05:54:03 +05:30
parent c415145547
commit 4f4b6f5194
Signed by: x
GPG Key ID: F6D06ECE734C57D1
11 changed files with 30 additions and 38 deletions

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@ -6,9 +6,7 @@
// Execute `rustlings hint generics1` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
fn main() {
let mut shopping_list: Vec<?> = Vec::new();
let mut shopping_list: Vec<&str> = Vec::new();
shopping_list.push("milk");
}

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@ -6,14 +6,12 @@
// Execute `rustlings hint generics2` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
struct Wrapper {
value: u32,
struct Wrapper<T> {
value: T,
}
impl Wrapper {
pub fn new(value: u32) -> Self {
impl<T> Wrapper<T> {
pub fn new(value: T) -> Self {
Wrapper { value }
}
}

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@ -8,9 +8,7 @@
// Execute `rustlings hint lifetimes1` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
fn longest(x: &str, y: &str) -> &str {
fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
if x.len() > y.len() {
x
} else {

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@ -6,8 +6,6 @@
// Execute `rustlings hint lifetimes2` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
if x.len() > y.len() {
x
@ -22,6 +20,6 @@ fn main() {
{
let string2 = String::from("xyz");
result = longest(string1.as_str(), string2.as_str());
}
println!("The longest string is '{}'", result);
}
}

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@ -5,11 +5,9 @@
// Execute `rustlings hint lifetimes3` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
struct Book {
author: &str,
title: &str,
struct Book<'a> {
author: &'a str,
title: &'a str,
}
fn main() {

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@ -16,15 +16,15 @@
//
// Execute `rustlings hint quiz3` or use the `hint` watch subcommand for a hint.
// I AM NOT DONE
use std::fmt::Display;
pub struct ReportCard {
pub grade: f32,
pub struct ReportCard<T> {
pub grade: T,
pub student_name: String,
pub student_age: u8,
}
impl ReportCard {
impl<T: Display> ReportCard<T> {
pub fn print(&self) -> String {
format!("{} ({}) - achieved a grade of {}",
&self.student_name, &self.student_age, &self.grade)
@ -52,7 +52,7 @@ mod tests {
fn generate_alphabetic_report_card() {
// TODO: Make sure to change the grade here after you finish the exercise.
let report_card = ReportCard {
grade: 2.1,
grade: "A+",
student_name: "Gary Plotter".to_string(),
student_age: 11,
};

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@ -7,14 +7,15 @@
// Execute `rustlings hint traits1` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
trait AppendBar {
fn append_bar(self) -> Self;
}
impl AppendBar for String {
// TODO: Implement `AppendBar` for type `String`.
fn append_bar(self) -> Self {
self + &"Bar"
}
}
fn main() {

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@ -8,13 +8,18 @@
//
// Execute `rustlings hint traits2` or use the `hint` watch subcommand for a hint.
// I AM NOT DONE
trait AppendBar {
fn append_bar(self) -> Self;
}
// TODO: Implement trait `AppendBar` for a vector of strings.
impl AppendBar for Vec<String> {
fn append_bar(self) -> Self {
let mut cloned = self.clone();
cloned.push(String::from("Bar"));
cloned
}
}
#[cfg(test)]
mod tests {

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@ -8,10 +8,10 @@
// Execute `rustlings hint traits3` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
pub trait Licensed {
fn licensing_info(&self) -> String;
fn licensing_info(&self) -> String {
"Some information".into()
}
}
struct SomeSoftware {

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@ -7,8 +7,6 @@
// Execute `rustlings hint traits4` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
pub trait Licensed {
fn licensing_info(&self) -> String {
"some information".to_string()
@ -23,7 +21,7 @@ impl Licensed for SomeSoftware {}
impl Licensed for OtherSoftware {}
// YOU MAY ONLY CHANGE THE NEXT LINE
fn compare_license_types(software: ??, software_two: ??) -> bool {
fn compare_license_types(software: impl Licensed, software_two: impl Licensed) -> bool {
software.licensing_info() == software_two.licensing_info()
}

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@ -7,8 +7,6 @@
// Execute `rustlings hint traits5` or use the `hint` watch subcommand for a
// hint.
// I AM NOT DONE
pub trait SomeTrait {
fn some_function(&self) -> bool {
true
@ -30,7 +28,7 @@ impl SomeTrait for OtherStruct {}
impl OtherTrait for OtherStruct {}
// YOU MAY ONLY CHANGE THE NEXT LINE
fn some_func(item: ??) -> bool {
fn some_func(item: impl SomeTrait + OtherTrait) -> bool {
item.some_function() && item.other_function()
}