examples: Use typed default value clap config (#634)

Author: tottoto

examples/axum-key-value-store/src/main.rs

@@ -25,7 +25,7 @@ use tower_http::{
 #[derive(Debug, Parser)]
 struct Config {
     /// The port to listen on
-    #[arg(short = 'p', long, default_value = "3000")]
+    #[arg(short = 'p', long, default_value_t = 3000)]
     port: u16,
 }
 

examples/tonic-key-value-store/src/main.rs

@@ -43,7 +43,7 @@ mod proto {
 #[derive(Debug, Parser)]
 struct Config {
     /// The port to listen on
-    #[arg(short = 'p', long, default_value = "3000")]
+    #[arg(short = 'p', long, default_value_t = 3000)]
     port: u16,
 
     #[command(subcommand)]

examples/warp-key-value-store/src/main.rs

@@ -26,7 +26,7 @@ use warp::{Filter, Rejection, Reply};
 #[derive(Debug, Parser)]
 struct Config {
     /// The port to listen on
-    #[arg(short = 'p', long, default_value = "3000")]
+    #[arg(short = 'p', long, default_value_t = 3000)]
     port: u16,
 }