Merge pull request #17 from dimacurrentai/windsurf

Windsurf live/vibe coding quick session.

Author: dkorolev

step01_cmdline/code/src/main.rs

@@ -1,14 +1,26 @@
 use clap::Parser;
 
+#[derive(Parser, clap::ValueEnum, Clone, Debug)]
+enum Operation {
+  Add,
+  Mul,
+}
+
 #[derive(Parser)]
 struct Args {
   #[arg(long)]
   a: i8,
   #[arg(long)]
   b: i8,
+  #[arg(long, value_enum, default_value_t = Operation::Add)]
+  op: Operation,
 }
 
 fn main() {
   let args = Args::parse();
-  println!("{} + {} = {}", args.a, args.b, args.a + args.b);
-}
+  let (result, op_symbol) = match args.op {
+    Operation::Add => (args.a + args.b, '+'),
+    Operation::Mul => (args.a * args.b, '*'),
+  };
+  println!("{} {} {} = {}", args.a, op_symbol, args.b, result);
+}

step01_cmdline/run.sh

@@ -5,5 +5,6 @@ set -e
 docker build -f ../Dockerfile.template . -t demo
 docker run --rm -t demo --a 1 --b 2 && echo OK
 docker run --rm -t demo --a 3 --b 4 && echo OK
+docker run --rm -t demo --a 3 --b 4 --op mul && echo OK
 docker run --rm -t demo --a 100 --b 100 && (echo "Error, should overflow."; exit 1)
 echo "Oveflow handled correctly."