Updated 'src/error_handling/panic_or_not'.

projects/panic_or_not/Cargo.toml

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

projects/panic_or_not/src/main.rs

@@ -0,0 +1,9 @@
+use std::net::IpAddr;
+
+fn main () {
+    let home: IpAddr = "127.0.0.1"
+        .parse()
+        .expect("硬编码的 IP 地址应是有效的");
+
+    println! ("{:?}", home);
+}