docs: add comments explaining the prevent-circular example

1 files changed, 10 insertions, 6 deletions

diff --git a/examples/prevent-circular/main.rs b/examples/prevent-circular/main.rs
index 7e10024..c690a9c 100644
--- a/examples/prevent-circular/main.rs
+++ b/examples/prevent-circular/main.rs
@@ -1,7 +1,10 @@
+//! Example demonstrating the prevention of circular dependencies.
+//!
+//! Having circular dependencies is generally bad practice and is detected by Syrette when
+//! the `prevent-circular` feature is enabled.
 #![deny(clippy::all)]
 #![deny(clippy::pedantic)]
 #![allow(clippy::disallowed_names)]
-use std::error::Error;
 
 use syrette::di_container::blocking::prelude::*;
 use syrette::injectable;
@@ -9,7 +12,7 @@ use syrette::ptr::TransientPtr;
 
 struct Foo
 {
-    bar: TransientPtr<Bar>,
+    _bar: TransientPtr<Bar>,
 }
 
 #[injectable]
@@ -17,13 +20,13 @@ impl Foo
 {
     fn new(bar: TransientPtr<Bar>) -> Self
     {
-        Self { bar }
+        Self { _bar: bar }
     }
 }
 
 struct Bar
 {
-    foo: TransientPtr<Foo>,
+    _foo: TransientPtr<Foo>,
 }
 
 #[injectable]
@@ -31,7 +34,7 @@ impl Bar
 {
     fn new(foo: TransientPtr<Foo>) -> Self
     {
-        Self { foo }
+        Self { _foo: foo }
     }
 }
 
@@ -42,7 +45,8 @@ fn main() -> Result<(), anyhow::Error>
     di_container.bind::<Foo>().to::<Foo>()?;
     di_container.bind::<Bar>().to::<Bar>()?;
 
-    let foo = di_container.get::<Foo>()?.transient()?;
+    // The following won't work. Err will be returned.
+    let _foo = di_container.get::<Foo>()?.transient()?;
 
     Ok(())
 }