first bit of guessing game ch2

guessing_game/Cargo.lock

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+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 3
+
+[[package]]
+name = "guessing_game"
+version = "0.1.0"

guessing_game/Cargo.toml

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+[package]
+name = "guessing_game"
+version = "0.1.0"
+edition = "2021"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]

guessing_game/src/main.rs

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+// some things are automatically loaded in every rust program
+// https://doc.rust-lang.org/std/prelude/index.html
+// for extras, import them with `use`:
+use std::io;
+
+fn main() {
+    println!("Guess the number!");
+    println!("input your guess");
+    // vars are immutable by default, change this
+    // The :: syntax in the ::new line indicates that new is an _associated function_ of the String
+    //         a function that’s implemented on a type
+    let mut guess = String::new();
+    // could still call this without importing it via std::io::stdin
+    // this can be one line, it is broken up for readability.
+    io::stdin()
+        // & indicates that this argument is a reference,
+        // references are also immutable by default so &mut is needed
+        .read_line(&mut guess)
+        // expect handles the Err variant by crashing the program. There are other ways to handle
+        // errors.
+        .expect("Failed to read line");
+    // read_line returns a `result` value. result is an enum. Each possible state is a variant.
+    // Result's variants are Ok and Err
+
+    println!("you guessed: {guess}");
+}

guessing_game/target/.rustc_info.json

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+{"rustc_fingerprint":2873261240282726551,"outputs":{"10376369925670944939":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.so\nlib___.so\nlib___.a\nlib___.so\n/home/luket/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu\ndebug_assertions\npanic=\"unwind\"\nproc_macro\ntarget_abi=\"\"\ntarget_arch=\"x86_64\"\ntarget_endian=\"little\"\ntarget_env=\"gnu\"\ntarget_family=\"unix\"\ntarget_feature=\"fxsr\"\ntarget_feature=\"llvm14-builtins-abi\"\ntarget_feature=\"sse\"\ntarget_feature=\"sse2\"\ntarget_has_atomic=\"16\"\ntarget_has_atomic=\"32\"\ntarget_has_atomic=\"64\"\ntarget_has_atomic=\"8\"\ntarget_has_atomic=\"ptr\"\ntarget_has_atomic_equal_alignment=\"16\"\ntarget_has_atomic_equal_alignment=\"32\"\ntarget_has_atomic_equal_alignment=\"64\"\ntarget_has_atomic_equal_alignment=\"8\"\ntarget_has_atomic_equal_alignment=\"ptr\"\ntarget_has_atomic_load_store=\"16\"\ntarget_has_atomic_load_store=\"32\"\ntarget_has_atomic_load_store=\"64\"\ntarget_has_atomic_load_store=\"8\"\ntarget_has_atomic_load_store=\"ptr\"\ntarget_os=\"linux\"\ntarget_pointer_width=\"64\"\ntarget_thread_local\ntarget_vendor=\"unknown\"\nunix\n","stderr":""},"4614504638168534921":{"success":true,"status":"","code":0,"stdout":"rustc 1.67.0-nightly (7eef946fc 2022-11-06)\nbinary: rustc\ncommit-hash: 7eef946fc0e0eff40e588eab77b09b287accbec3\ncommit-date: 2022-11-06\nhost: x86_64-unknown-linux-gnu\nrelease: 1.67.0-nightly\nLLVM version: 15.0.4\n","stderr":""},"15697416045686424142":{"success":true,"status":"","code":0,"stdout":"___\nlib___.rlib\nlib___.so\nlib___.so\nlib___.a\nlib___.so\n","stderr":""}},"successes":{}}

guessing_game/target/CACHEDIR.TAG

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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/

guessing_game/target/debug/.fingerprint/guessing_game-3f658c19dd973748/bin-guessing_game

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+96b64cf4f2c856d9

guessing_game/target/debug/.fingerprint/guessing_game-3f658c19dd973748/bin-guessing_game.json

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+{"rustc":15234846723159686366,"features":"[]","target":18246892274002150725,"profile":9251013656241001069,"path":1684066648322511884,"deps":[],"local":[{"CheckDepInfo":{"dep_info":"debug/.fingerprint/guessing_game-3f658c19dd973748/dep-bin-guessing_game"}}],"rustflags":[],"metadata":7797948686568424061,"config":2202906307356721367,"compile_kind":0}

guessing_game/target/debug/.fingerprint/guessing_game-3f658c19dd973748/invoked.timestamp

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

guessing_game/target/debug/deps/guessing_game-3f658c19dd973748.d

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+/home/luket/git/rust/guessing_game/target/debug/deps/guessing_game-3f658c19dd973748: src/main.rs
+
+/home/luket/git/rust/guessing_game/target/debug/deps/guessing_game-3f658c19dd973748.d: src/main.rs
+
+src/main.rs:

guessing_game/target/debug/guessing_game.d

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+/home/luket/git/rust/guessing_game/target/debug/guessing_game: /home/luket/git/rust/guessing_game/src/main.rs