refactor(examples): migrate renderers to return RenderResult and add

std::io::Write import

Replace r_println!/r_print! macro usage across all example renderers
with
explicit RenderResult construction using std::io::Write, enabling more
flexible output handling and reducing reliance on macro-side effects.

1 files changed, 5 insertions, 2 deletions

diff --git a/examples/example-dispatch-tree/src/main.rs b/examples/example-dispatch-tree/src/main.rs
index e087b1e..9f76f15 100644
--- a/examples/example-dispatch-tree/src/main.rs
+++ b/examples/example-dispatch-tree/src/main.rs
@@ -21,6 +21,7 @@
 //!
 
 use mingling::prelude::*;
+use std::io::Write;
 
 // --------- IMPORTANT ---------
 // You have a large number of subcommands
@@ -53,8 +54,10 @@ fn main() {
 
 /// Renders the confirmation message for the `cmd5` command.
 #[renderer]
-fn render_cmd5(_: Entry5) {
-    r_println!("It's works!");
+fn render_cmd5(_: Entry5) -> RenderResult {
+    let mut render_result = RenderResult::new();
+    writeln!(render_result, "It's works!").ok();
+    render_result
 }
 
 gen_program!();