fix scripts

Cargo.lock

@@ -0,0 +1,161 @@
+# This file is automatically @generated by Cargo.
+# It is not intended for manual editing.
+version = 4
+
+[[package]]
+name = "branches"
+version = "0.1.0"
+
+[[package]]
+name = "cfg-if"
+version = "1.0.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9555578bc9e57714c812a1f84e4fc5b4d21fcb063490c624de019f7464c91268"
+
+[[package]]
+name = "data_types"
+version = "0.1.0"
+
+[[package]]
+name = "functions"
+version = "0.1.0"
+
+[[package]]
+name = "getrandom"
+version = "0.2.16"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "335ff9f135e4384c8150d6f27c6daed433577f86b4750418338c01a1a2528592"
+dependencies = [
+ "cfg-if",
+ "libc",
+ "wasi",
+]
+
+[[package]]
+name = "guessing_game"
+version = "0.1.0"
+dependencies = [
+ "rand",
+]
+
+[[package]]
+name = "hello_cargo"
+version = "0.1.0"
+
+[[package]]
+name = "libc"
+version = "0.2.174"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1171693293099992e19cddea4e8b849964e9846f4acee11b3948bcc337be8776"
+
+[[package]]
+name = "loops"
+version = "0.1.0"
+
+[[package]]
+name = "ownership"
+version = "0.1.0"
+
+[[package]]
+name = "ppv-lite86"
+version = "0.2.21"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "85eae3c4ed2f50dcfe72643da4befc30deadb458a9b590d720cde2f2b1e97da9"
+dependencies = [
+ "zerocopy",
+]
+
+[[package]]
+name = "proc-macro2"
+version = "1.0.95"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "02b3e5e68a3a1a02aad3ec490a98007cbc13c37cbe84a3cd7b8e406d76e7f778"
+dependencies = [
+ "unicode-ident",
+]
+
+[[package]]
+name = "quote"
+version = "1.0.40"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1885c039570dc00dcb4ff087a89e185fd56bae234ddc7f056a945bf36467248d"
+dependencies = [
+ "proc-macro2",
+]
+
+[[package]]
+name = "rand"
+version = "0.8.5"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "34af8d1a0e25924bc5b7c43c079c942339d8f0a8b57c39049bef581b46327404"
+dependencies = [
+ "libc",
+ "rand_chacha",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_chacha"
+version = "0.3.1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "e6c10a63a0fa32252be49d21e7709d4d4baf8d231c2dbce1eaa8141b9b127d88"
+dependencies = [
+ "ppv-lite86",
+ "rand_core",
+]
+
+[[package]]
+name = "rand_core"
+version = "0.6.4"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ec0be4795e2f6a28069bec0b5ff3e2ac9bafc99e6a9a7dc3547996c5c816922c"
+dependencies = [
+ "getrandom",
+]
+
+[[package]]
+name = "syn"
+version = "2.0.104"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "17b6f705963418cdb9927482fa304bc562ece2fdd4f616084c50b7023b435a40"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "unicode-ident",
+]
+
+[[package]]
+name = "unicode-ident"
+version = "1.0.18"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "5a5f39404a5da50712a4c1eecf25e90dd62b613502b7e925fd4e4d19b5c96512"
+
+[[package]]
+name = "variables"
+version = "0.1.0"
+
+[[package]]
+name = "wasi"
+version = "0.11.1+wasi-snapshot-preview1"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "ccf3ec651a847eb01de73ccad15eb7d99f80485de043efb2f370cd654f4ea44b"
+
+[[package]]
+name = "zerocopy"
+version = "0.8.26"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "1039dd0d3c310cf05de012d8a39ff557cb0d23087fd44cad61df08fc31907a2f"
+dependencies = [
+ "zerocopy-derive",
+]
+
+[[package]]
+name = "zerocopy-derive"
+version = "0.8.26"
+source = "registry+https://github.com/rust-lang/crates.io-index"
+checksum = "9ecf5b4cc5364572d7f4c329661bcc82724222973f2cab6f050a4e5c22f75181"
+dependencies = [
+ "proc-macro2",
+ "quote",
+ "syn",
+]

Cargo.toml

@@ -7,5 +7,6 @@ members = [
   "hello_cargo",
   "loops",
   "ownership",
+  "references_and_borrowing",
   "variables",
 ]

create_project.sh

@@ -1,13 +1,16 @@
 #!/bin/bash
+
+set -e
+
 name="$1"
 
 if [ -z "$name" ]; then
-  echo "Usage: ./monorepo-cargo-new.sh <project_name>"
+  echo "❌ Usage: ./create_project.sh <project_name>"
   exit 1
 fi
 
+# Step 1: Create new cargo project without Git
 cargo new "$name" --vcs none
-echo "  \"$name\"," >> Cargo.toml
 
 echo "✅ Project '$name' created and added to workspace!"
-
+echo "add $name to Cargo.toml"

ownership/src/main.rs

@@ -1,5 +1,34 @@
 fn main() {
-    let mut s = String::from("Hello");
-    s.push_str(", World!");
-    println!("{s}");
+    let s1 = String::from("Hello");
+    let s2 = s1; // s1 goes out of scope here
+    println!("{s2}, world!");
+
+    let mut s = String::from("hello");
+    s = String::from("world"); // original "hello" value drops here
+    println!("hello, {s}");
+
+    let s1 = String::from("hello");
+    let s2 = s1.clone(); // heap data gets copied here
+    println!("s1 = {s1}, s2 = {s2}");
+
+    let s3 = String::from("forsen");
+    copy_string_value(s3);
+    // println!("{s3}");
+    // will throw and erorr
+
+    let s4 = String::from("gachi");
+    let (s5, len) = calculate_length(s4);
+    //println!("{s4}");
+    // also will throw an error
+    println!("string: {s5}, length: {len}")
+}
+
+fn copy_string_value(string: String) {
+    println!("{string}");
+}
+
+fn calculate_length(s: String) -> (String, usize) {
+    let length = s.len();
+
+    (s, length)
 }

references_and_borrowing/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "references_and_borrowing"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]

references_and_borrowing/src/main.rs

@@ -0,0 +1,3 @@
+fn main() {
+    println!("Hello, world!");
+}