rust course examples

Author: BartMassey

README.md

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+# Rust Examples
+Bart Massey 2021
+
+Various small examples from my Rust course. Previously a lot
+of these were on the playground, but I prefer to have them
+in a controlled repository now.
+
+* `datatypes`: examples of various datatype thingies

datatypes/Cargo.lock

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+[package]
+name = "datatypes"
+version = "0.1.0"
+authors = ["Bart Massey <[email protected]>"]
+edition = "2018"

datatypes/Cargo.toml

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+fn _even1() {
+    let x = 5;
+    if x % 2 == 1 {
+        println!("even {}", x + 1);
+    } else {
+        let q = '?';
+        println!("{}", q);
+    }
+}
+
+fn _even2() {
+    let x = 5;
+    let x =
+        if x % 2 == 1 {
+            x + 1
+        } else {
+            x
+        };
+    println!("even {}", x);
+}
+
+fn _evens() {
+    for i in (0..10).step_by(2) {
+        println!("{}", i);
+    }
+}
+
+fn _one() {
+    let x = { 1 };
+    println!("{}", x);
+}
+
+fn _matchy(x: u8) {
+    let y = match x {
+        0 => 5,
+        1 => panic!("oops"),
+        p => p + 1,
+    };
+    println!("{}", y);
+}
+
+fn _diverge() -> ! {
+    println!("bye");
+    std::process::exit(0);
+}
+
+fn _fn_values() {
+    fn returns_unit() {
+        println!("in function");
+    }
+    let f = returns_unit;
+    let x = f();
+    println!("{:?}", x);
+}
+
+fn copy() {
+    // let x = "string".to_string();
+    let x = true;
+    let y = x;
+    let z = x;
+    println!("{} {} {}", x, y, z);
+}
+
+fn main() {
+    copy();
+}