From 13c16e3afc09746bc0b6fd0f467c4a0f33d1dcc1 Mon Sep 17 00:00:00 2001
From: Marcin Serwin <marcin.serwin0@protonmail.com>
Date: Wed, 29 Nov 2023 17:42:44 +0100
Subject: [PATCH] Use OnceCell in cell module documentation
---
library/core/src/cell.rs | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/library/core/src/cell.rs b/library/core/src/cell.rs
index f10a82c569496..030040ba09abb 100644
--- a/library/core/src/cell.rs
+++ b/library/core/src/cell.rs
@@ -143,17 +143,17 @@
//!
//! ```
//! # #![allow(dead_code)]
-//! use std::cell::RefCell;
+//! use std::cell::OnceCell;
//!
//! struct Graph {
//! edges: Vec<(i32, i32)>,
-//! span_tree_cache: RefCell<Option<Vec<(i32, i32)>>>
+//! span_tree_cache: OnceCell<Vec<(i32, i32)>>
//! }
//!
//! impl Graph {
//! fn minimum_spanning_tree(&self) -> Vec<(i32, i32)> {
-//! self.span_tree_cache.borrow_mut()
-//! .get_or_insert_with(|| self.calc_span_tree())
+//! self.span_tree_cache
+//! .get_or_init(|| self.calc_span_tree())
//! .clone()
//! }
//!