<!-- PCU: ch13-profiling | contract: contracts/apr-book-ch13-v1.yaml -->
<!-- Example: cargo run -p aprender-core --example ch13_profiling -->
<!-- Status: enforced -->
# Chapter 13: Profiling and Optimization
> Contract: [`apr-book-ch13`](../../../contracts/apr-book-ch13-v1.yaml)
Run: `cargo run -p aprender-core --example ch13_profiling`
```rust,ignore
{{#include ../../../crates/aprender-core/examples/ch13_profiling.rs}}
```