dev: Use std::panic::catch_unwind for Controlled Panic Handling (Issu…

src/SUMMARY.md

@@ -66,4 +66,5 @@
   - [Challenge 62](./challenges/challenge-62.md)
   - [Challenge 63](./challenges/challenge-63.md)
   - [Challenge 64](./challenges/challenge-64.md)
+  - [Challenge 65](./challenges/challenge-65.md)
 - [Resources](./resources.md)

src/challenges/challenge-65.md

@@ -0,0 +1,33 @@
+# Challenge 65
+
+### Rust Tip: Use std::panic::catch_unwind for Controlled Panic Handling
+
+`std::panic::catch_unwind` is a lesser-known tool to catch and handle panics, preventing program crashes in sensitive contexts like FFI or testing.
+
+It captures panics and returns a Result, allowing graceful recovery.
+
+```rust
+// Rust Bytes Issue 74: Use std::panic::catch_unwind for Controlled Panic Handling
+
+use std::panic::catch_unwind;
+
+fn risky_op -> i32 {
+    panic!("Oh no!");
+}
+
+fn main() {
+    let result = catch_unwind(|| risky_op());
+    match result {
+        Ok(val) => println!("Result: {}", val),
+        Err(_) => println!("Caught panic!"),
+    }
+}
+```
+
+
+You can play around with the code on [Rust Playground](https://play.rust-lang.org/?version=stable&mode=debug&edition=2024&gist=ba2d516bc165ee52cc8c7bbe338f7321).
+
+**Notes:** This function **might not catch all Rust panics.** A Rust panic is not always implemented via unwinding, but can be implemented by aborting the process as well. This function *only* catches unwinding panics, not those that abort the process.
+
+
+Check the docs on [std::panic::catch_unwind](https://doc.rust-lang.org/std/panic/fn.catch_unwind.html) for more information.