初始化 Rust 项目，添加基本功能和依赖
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commit
7da5c9392e
1
.gitignore
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.gitignore
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/target
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140
Cargo.lock
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140
Cargo.lock
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# This file is automatically @generated by Cargo.
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# It is not intended for manual editing.
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version = 3
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[[package]]
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name = "byteorder"
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version = "1.5.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "1fd0f2584146f6f2ef48085050886acf353beff7305ebd1ae69500e27c67f64b"
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[[package]]
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name = "cfg-if"
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version = "1.0.0"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "baf1de4339761588bc0619e3cbc0120ee582ebb74b53b4efbf79117bd2da40fd"
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[[package]]
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name = "getrandom"
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version = "0.2.15"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "c4567c8db10ae91089c99af84c68c38da3ec2f087c3f82960bcdbf3656b6f4d7"
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dependencies = [
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"cfg-if",
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"libc",
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"wasi",
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]
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[[package]]
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name = "libc"
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version = "0.2.162"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "18d287de67fe55fd7e1581fe933d965a5a9477b38e949cfa9f8574ef01506398"
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[[package]]
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name = "ppv-lite86"
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version = "0.2.20"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "77957b295656769bb8ad2b6a6b09d897d94f05c41b069aede1fcdaa675eaea04"
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dependencies = [
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"zerocopy",
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]
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[[package]]
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name = "proc-macro2"
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version = "1.0.89"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "f139b0662de085916d1fb67d2b4169d1addddda1919e696f3252b740b629986e"
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dependencies = [
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"unicode-ident",
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]
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[[package]]
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name = "quote"
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version = "1.0.37"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "b5b9d34b8991d19d98081b46eacdd8eb58c6f2b201139f7c5f643cc155a633af"
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dependencies = [
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"proc-macro2",
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]
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[[package]]
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name = "rand"
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version = "0.8.5"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
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dependencies = [
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"libc",
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"rand_chacha",
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"rand_core",
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]
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[[package]]
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name = "rand_chacha"
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version = "0.3.1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
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dependencies = [
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"ppv-lite86",
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"rand_core",
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]
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[[package]]
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name = "rand_core"
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version = "0.6.4"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
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dependencies = [
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"getrandom",
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]
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[[package]]
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name = "rust-test"
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version = "0.1.0"
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dependencies = [
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"rand",
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]
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[[package]]
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name = "syn"
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version = "2.0.87"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "25aa4ce346d03a6dcd68dd8b4010bcb74e54e62c90c573f394c46eae99aba32d"
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dependencies = [
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"proc-macro2",
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"quote",
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"unicode-ident",
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]
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[[package]]
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name = "unicode-ident"
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version = "1.0.13"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "e91b56cd4cadaeb79bbf1a5645f6b4f8dc5bde8834ad5894a8db35fda9efa1fe"
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[[package]]
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name = "wasi"
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version = "0.11.0+wasi-snapshot-preview1"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "9c8d87e72b64a3b4db28d11ce29237c246188f4f51057d65a7eab63b7987e423"
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[[package]]
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name = "zerocopy"
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version = "0.7.35"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "1b9b4fd18abc82b8136838da5d50bae7bdea537c574d8dc1a34ed098d6c166f0"
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dependencies = [
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"byteorder",
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"zerocopy-derive",
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]
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[[package]]
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name = "zerocopy-derive"
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version = "0.7.35"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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checksum = "fa4f8080344d4671fb4e831a13ad1e68092748387dfc4f55e356242fae12ce3e"
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dependencies = [
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"proc-macro2",
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"quote",
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"syn",
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]
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11
Cargo.toml
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11
Cargo.toml
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[package]
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name = "rust-test"
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version = "0.1.0"
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edition = "2021"
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[dependencies]
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rand = "0.8.5"
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[[bin]]
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name = "rust-test"
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path = "main.rs"
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162
main.rs
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162
main.rs
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fn main() {
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let guess: u32 = "42".parse().expect("Not a number!");
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println!("You guessed: {}", guess);
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let heart_eyed_cat = '😻';
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println!("{}", heart_eyed_cat);
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let cc = another_function(3, 'a');
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println!("The value of cc is: {}", cc);
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// Statements and Expressions
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let x = {
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let y = 5;
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y + 1
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};
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println!("The value of x is: {}", x);
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for number in 1..4 {
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println!("{}!", number);
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}
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let result = fibonacci_function(3);
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println!("The result is: {}", result);
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// 相互转换摄氏与华氏温度
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let celsius = 30.0;
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let fahrenheit = celsius_to_fahrenheit(celsius);
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println!("{} celsius is {} fahrenheit.", celsius, fahrenheit);
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let fahrenheit = 86.0;
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let celsius = fahrenheit_to_celsius(fahrenheit);
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println!("{} fahrenheit is {} celsius.", fahrenheit, celsius);
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let mut s = String::from("hello");
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s.push_str(", world!");
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println!("{}", s);
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let s2 = s;
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println!("{}", s2);
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// println!("{}", s);
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let t = String::from("hello");
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takes_ownership(t);
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// println!("{}", t);
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let y = 5;
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makes_copy(y);
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println!("{}", y);
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let s4 = String::from("hello");
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let len = calculate_length(&s4);
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println!("The length of '{}' is {}.", s4, len);
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// let s5 = String::from("hello");
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// change(&s5);
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let mn = String::from("hello world");
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let word = first_word(&mn);
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// mn.clear();
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println!("The first word is: {}", word);
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// let width1 = 30;
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// let height1 = 50;
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let rect1 = Rectangle {
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width: 30,
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height: 50,
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};
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dbg!(&rect1);
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// println!("rect1 is {:#?}", rect1);
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// println!(
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// "The area of the rectangle is {} square pixels.",
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// area(&rect1)
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// );
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println!(
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"The area of the rectangle is {} square pixels.",
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rect1.area()
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);
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let rect2 = Rectangle::square(3);
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println!(
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"The area of the rectangle is {} square pixels.",
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rect2.area()
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);
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}
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fn another_function(a: i32, char: char) -> i32 {
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println!("Another function.");
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println!("The value of a is: {}", a);
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println!("The value of char is: {}", char);
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5
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}
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fn fibonacci_function(n: i32) -> i32 {
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if n == 0 {
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return 0;
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} else if n == 1 {
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return 1;
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} else {
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return fibonacci_function(n - 1) + fibonacci_function(n - 2);
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}
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}
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fn celsius_to_fahrenheit(celsius: f64) -> f64 {
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celsius * 1.8 + 32.0
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}
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fn fahrenheit_to_celsius(fahrenheit: f64) -> f64 {
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(fahrenheit - 32.0) / 1.8
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}
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fn takes_ownership(some_string: String) {
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// some_string 进入作用域
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println!("{some_string}");
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} // 这里，some_string 移出作用域并调用 `drop` 方法。
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// 占用的内存被释放
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fn makes_copy(some_integer: i32) {
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// some_integer 进入作用域
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println!("{some_integer}");
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} // 这里，some_integer 移出作用域。没有特殊之处
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fn calculate_length(s: &String) -> usize {
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s.len()
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}
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// fn change(some_string: &String) {
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// some_string.push_str(", world");
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// }
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fn first_word(s: &String) -> &str {
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let bytes = s.as_bytes();
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for (i, &item) in bytes.iter().enumerate() {
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if item == b' ' {
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return &s[..i];
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}
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}
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&s[..]
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}
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// fn area(width: u32, height: u32) -> u32 {
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// width * height
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// }
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#[derive(Debug)]
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struct Rectangle {
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width: u32,
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height: u32,
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}
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impl Rectangle {
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fn area(&self) -> u32 {
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self.width * self.height
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}
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}
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impl Rectangle {
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fn square(size: u32) -> Rectangle {
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Rectangle {
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width: size,
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height: size,
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}
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}
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}
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