docs: rust day day up

Author: MuYunyun

module/Cargo.lock

@@ -0,0 +1 @@
+pub mod hosting;

module/src/front_of_house.rs

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+pub fn add_to_waitlist() {}

module/src/front_of_house/hosting.rs

@@ -1,14 +1,30 @@
-// Todo: 拆分为多文件
-mod front_of_house {
-    pub mod hosting {
-        pub fn add_to_waitlist() {}
-    }
-}
+// 单文件
+// mod front_of_house {
+//     pub mod hosting {
+//         pub fn add_to_waitlist() {}
+//     }
+// }
+
+// pub use crate::front_of_house::hosting;
+
+// fn main() {
+//     hosting::add_to_waitlist();
+//     hosting::add_to_waitlist();
+//     hosting::add_to_waitlist();
+
+//     println!("Hello, world!");
+// }
+
+// 多文件
+// 在 mod front_of_house 后添加分号而不是代码块会让 Rust 前往与当前模块同名的文件中加载模块；
+mod front_of_house;
 
 pub use crate::front_of_house::hosting;
 
 fn main() {
     hosting::add_to_waitlist();
     hosting::add_to_waitlist();
     hosting::add_to_waitlist();
+
+    println!("Hello, world!");
 }

module/src/main.rs

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+{"rustc_fingerprint":3299840891311980700,"outputs":{"15697416045686424142":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.dylib\nlib___.dylib\nlib___.a\nlib___.dylib\n","stderr":""},"4614504638168534921":{"success":true,"status":"","code":0,"stdout":"rustc 1.67.0 (fc594f156 2023-01-24)\nbinary: rustc\ncommit-hash: fc594f15669680fa70d255faec3ca3fb507c3405\ncommit-date: 2023-01-24\nhost: x86_64-apple-darwin\nrelease: 1.67.0\nLLVM version: 15.0.6\n","stderr":""},"10376369925670944939":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.dylib\nlib___.dylib\nlib___.a\nlib___.dylib\n/Users/mac/.rustup/toolchains/stable-x86_64-apple-darwin\ndebug_assertions\npanic=\"unwind\"\nproc_macro\ntarget_arch=\"x86_64\"\ntarget_endian=\"little\"\ntarget_env=\"\"\ntarget_family=\"unix\"\ntarget_feature=\"fxsr\"\ntarget_feature=\"sse\"\ntarget_feature=\"sse2\"\ntarget_feature=\"sse3\"\ntarget_feature=\"ssse3\"\ntarget_has_atomic=\"128\"\ntarget_has_atomic=\"16\"\ntarget_has_atomic=\"32\"\ntarget_has_atomic=\"64\"\ntarget_has_atomic=\"8\"\ntarget_has_atomic=\"ptr\"\ntarget_os=\"macos\"\ntarget_pointer_width=\"64\"\ntarget_vendor=\"apple\"\nunix\n","stderr":""}},"successes":{}}

module/target/.rustc_info.json

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+Signature: 8a477f597d28d172789f06886806bc55
+# This file is a cache directory tag created by cargo.
+# For information about cache directory tags see https://bford.info/cachedir/

module/target/CACHEDIR.TAG

@@ -0,0 +1 @@
+b6fc571a516d9632

module/target/release/.cargo-lock

@@ -0,0 +1 @@
+{"rustc":2209823359022848052,"features":"[]","target":5330418027101799184,"profile":6269190295429226618,"path":1684066648322511884,"deps":[],"local":[{"CheckDepInfo":{"dep_info":"release/.fingerprint/module-a012f86f5d40ca44/dep-bin-module"}}],"rustflags":[],"metadata":7797948686568424061,"config":2202906307356721367,"compile_kind":0}

module/target/release/.fingerprint/module-a012f86f5d40ca44/bin-module

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+This file has an mtime of when this was started.

module/target/release/.fingerprint/module-a012f86f5d40ca44/bin-module.json

@@ -0,0 +1,7 @@
+/Users/mac/Developer/project/demos-of-rust/module/target/release/deps/module-a012f86f5d40ca44: src/main.rs src/front_of_house.rs src/front_of_house/hosting.rs
+
+/Users/mac/Developer/project/demos-of-rust/module/target/release/deps/module-a012f86f5d40ca44.d: src/main.rs src/front_of_house.rs src/front_of_house/hosting.rs
+
+src/main.rs:
+src/front_of_house.rs:
+src/front_of_house/hosting.rs:

module/target/release/.fingerprint/module-a012f86f5d40ca44/dep-bin-module

@@ -0,0 +1 @@
+/Users/mac/Developer/project/demos-of-rust/module/target/release/module: /Users/mac/Developer/project/demos-of-rust/module/src/front_of_house/hosting.rs /Users/mac/Developer/project/demos-of-rust/module/src/front_of_house.rs /Users/mac/Developer/project/demos-of-rust/module/src/main.rs