https://nalar.dev/tags/refcell/ Recent content in RefCell on Nalar Hugo en-us Wed, 02 Sep 2026 00:00:00 +0700 https://nalar.dev/interior-mutability-in-rust-with-refcell/ Wed, 02 Sep 2026 00:00:00 +0700 https://nalar.dev/interior-mutability-in-rust-with-refcell/ <p>Rust normally enforces borrowing at compile time: either one mutable reference or any number of immutable references may exist at a given moment. That rule prevents data races and many aliasing bugs before the program runs.</p> <p>Sometimes the compiler cannot prove that a safe mutation pattern is valid, even though the program can enforce the rule dynamically. <code>RefCell&lt;T&gt;</code> provides interior mutability for those cases by moving borrow checking from compile time to runtime.</p>