3 files changed, 55 insertions, 0 deletions
diff --git a/functions/.gitignore b/functions/.gitignore
new file mode 100644
index 0000000..e629269
--- /dev/null
+++ b/functions/.gitignore
@@ -0,0 +1,18 @@
+
+# Created by https://www.toptal.com/developers/gitignore/api/rust
+# Edit at https://www.toptal.com/developers/gitignore?templates=rust
+
+### Rust ###
+# Generated by Cargo
+# will have compiled files and executables
+/target/
+
+# Remove Cargo.lock from gitignore if creating an executable, leave it for libraries
+# More information here https://doc.rust-lang.org/cargo/guide/cargo-toml-vs-cargo-lock.html
+Cargo.lock
+
+# These are backup files generated by rustfmt
+**/*.rs.bk
+
+# End of https://www.toptal.com/developers/gitignore/api/rust
+
diff --git a/functions/Cargo.toml b/functions/Cargo.toml
new file mode 100644
index 0000000..e07244c
--- /dev/null
+++ b/functions/Cargo.toml
@@ -0,0 +1,9 @@
+[package]
+name = "functions"
+version = "0.1.0"
+authors = ["Jordan Gong <jordan.gong@protonmail.com>"]
+edition = "2018"
+
+# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
+
+[dependencies]
diff --git a/functions/src/main.rs b/functions/src/main.rs
new file mode 100644
index 0000000..c7a0db1
--- /dev/null
+++ b/functions/src/main.rs
@@ -0,0 +1,28 @@
+fn main() {
+    /* basic */
+    println!("Hello, world!");
+
+    another_function(5, 6);
+    
+    /* expression */
+    let y = {
+        let x = 3;
+        x + 1
+    };
+
+    println!("The value of y is: {}", y);
+
+    /* return */
+    let x = plus_one(5);
+
+    println!("The value of x is: {}", x);
+}
+
+fn another_function(x: i32, y:i32) {
+    println!("The value of x is: {}", x);
+    println!("The value of y is: {}", y);
+}
+
+fn plus_one(x: i32) -> i32 {
+    x + 1
+}