update at 2021-11-23 18:32:43 by ehlxr

This commit is contained in:
ehlxr 2021-11-23 18:32:43 +08:00
parent 39bb6127de
commit d25398b3bf
3 changed files with 82 additions and 78 deletions

View File

@ -1,10 +1,13 @@
mod sub_mod;
mod user;
use std::cell::RefCell;
use std::hash::Hash;
use std::ops::Deref;
use std::rc::{Rc, Weak};
use std::sync::{mpsc, Arc, Mutex};
use std::time::Duration;
use std::{collections::HashMap, fmt::Display, fs, fs::File, io, io::ErrorKind, thread};
use std::{collections::HashMap, fmt::Display, fs::File, io, io::ErrorKind, thread};
fn main() {
let mut s = String::from("Hello");
@ -87,8 +90,8 @@ fn main() {
println!("----------------------------------------");
let my_str = String::from("hello world!");
// let my_str = "hello world!";
println!("{}, {}", my_str, first_words(&my_str[..]));
println!("get first word: {}", first_words("hello world"));
println!("{}, {}", my_str, sub_mod::first_words(&my_str[..]));
println!("get first word: {}", sub_mod::first_words("hello world"));
let rect = Rectangle {
width: 21,
@ -293,7 +296,7 @@ fn main() {
d(&mut s);
println!("{}", s);
generate_workout(10, 3);
sub_mod::generate_workout(10, 3);
// ---------------------------
println!("----------------------------------------");
@ -602,7 +605,7 @@ fn main() {
let x: u32 = 5;
let point = (3, x as i32);
print_coordinates(&point);
sub_mod::print_coordinates(&point);
// ---------------------------
println!("---------------------------");
@ -812,7 +815,7 @@ fn main() {
let mut v = vec![1, 2, 3, 4, 5, 6];
let r = &mut v[..];
let (_a, _b) = r.split_at_mut(3);
let (a, b) = split_at_mut(r, 3);
let (a, b) = sub_mod::split_at_mut(r, 3);
println!("{:?}", a);
println!("{:?}", b);
@ -935,7 +938,7 @@ fn main() {
// Pancakes::hello_macro();
let user1 = User {
let user1 = user::User {
username: String::from("hllo"),
email: String::from("hell@world.com"),
sign_in_count: 1,
@ -1105,14 +1108,6 @@ fn test_tuple(t: (i32, &str)) {
println!("{} {}", t.0, t.1);
}
#[derive(Debug)]
struct User {
username: String,
email: String,
sign_in_count: u64,
active: bool,
}
static mut COUNTER: u32 = 0;
fn add_to_count(inc: u32) {
@ -1124,29 +1119,6 @@ fn add_to_count(inc: u32) {
use core::fmt;
use std::fmt::Formatter;
use std::io::Read;
use std::slice;
fn split_at_mut(slice: &mut [i32], mid: usize) -> (&mut [i32], &mut [i32]) {
// let len = slice.len();
// assert!(mid <= len);
// (&mut slice[..mid], &mut slice[mid..])
let len = slice.len();
let ptr = slice.as_mut_ptr();
assert!(mid <= len);
unsafe {
(
slice::from_raw_parts_mut(ptr, mid),
slice::from_raw_parts_mut(ptr.offset(mid as isize), len - mid),
)
}
}
fn print_coordinates(&(x, y): &(i32, i32)) {
println!("Current location: ({}, {})", x, y);
}
#[derive(Debug)]
struct Bt {
@ -1284,18 +1256,6 @@ impl Message {
}
}
//fn first_words<'a>(s: &'a str) -> &'a str {
fn first_words(s: &str) -> &str {
let b = s.as_bytes();
for (i, &item) in b.iter().enumerate() {
if item == b' ' {
return &s[0..i];
}
}
&s[..]
}
#[derive(Debug)]
struct Rectangle {
width: u32,
@ -1573,34 +1533,6 @@ where
}
}
fn generate_workout(intensity: u32, random_number: u32) {
// let calculation = |num: u32| -> u32 {
// println!("calculating slowly...");
// thread::sleep(Duration::from_secs(2));
// num
// };
let mut expensive_result = Cacher::new(|num| {
println!("calculating slowly...");
thread::sleep(Duration::from_millis(500));
num + 1
});
if intensity < 25 {
println!("Today, do {} pushups!", expensive_result.value(intensity));
println!("Next, do {} situps!", expensive_result.value(intensity));
} else {
if random_number == 3 {
println!("Take a break today! Remember to stay hydrated!");
} else {
println!(
"Today, run for {} minutes!",
expensive_result.value(intensity)
);
}
}
}
#[derive(Debug)]
struct Shoe {
size: u32,

65
src/sub_mod.rs Normal file
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@ -0,0 +1,65 @@
use std::{slice, thread, time::Duration};
use crate::Cacher;
pub fn split_at_mut(slice: &mut [i32], mid: usize) -> (&mut [i32], &mut [i32]) {
// let len = slice.len();
// assert!(mid <= len);
// (&mut slice[..mid], &mut slice[mid..])
let len = slice.len();
let ptr = slice.as_mut_ptr();
assert!(mid <= len);
unsafe {
(
slice::from_raw_parts_mut(ptr, mid),
slice::from_raw_parts_mut(ptr.offset(mid as isize), len - mid),
)
}
}
//pub fn first_words<'a>(s: &'a str) -> &'a str {
pub fn first_words(s: &str) -> &str {
let b = s.as_bytes();
for (i, &item) in b.iter().enumerate() {
if item == b' ' {
return &s[0..i];
}
}
&s[..]
}
pub fn generate_workout(intensity: u32, random_number: u32) {
// let calculation = |num: u32| -> u32 {
// println!("calculating slowly...");
// thread::sleep(Duration::from_secs(2));
// num
// };
let mut expensive_result = Cacher::new(|num| {
println!("calculating slowly...");
thread::sleep(Duration::from_millis(500));
num + 1
});
if intensity < 25 {
println!("Today, do {} pushups!", expensive_result.value(intensity));
println!("Next, do {} situps!", expensive_result.value(intensity));
} else {
if random_number == 3 {
println!("Take a break today! Remember to stay hydrated!");
} else {
println!(
"Today, run for {} minutes!",
expensive_result.value(intensity)
);
}
}
}
pub fn print_coordinates(&(x, y): &(i32, i32)) {
println!("Current location: ({}, {})", x, y);
}

7
src/user.rs Normal file
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@ -0,0 +1,7 @@
#[derive(Debug)]
pub struct User {
pub username: String,
pub email: String,
pub sign_in_count: u64,
pub active: bool,
}