From 7d5115d6c4897e09a78a93ac4cff6ae4fa5dbeb2 Mon Sep 17 00:00:00 2001
From: Lucas Jenss <lucas.jenss@new-work.se>
Date: Wed, 18 Dec 2019 11:50:04 +0100
Subject: [PATCH] Add example for how to update value if one exists

---
 src/value/mod.rs | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/value/mod.rs b/src/value/mod.rs
index eb4b900..93f9c69 100644
--- a/src/value/mod.rs
+++ b/src/value/mod.rs
@@ -801,6 +801,8 @@ impl Value {
     ///     *value.pointer_mut("/x").unwrap() = 1.5.into();
     ///     // Check that new value was written
     ///     assert_eq!(value.pointer("/x"), Some(&1.5.into()));
+    ///     // Or change the value only if it exists
+    ///     value.pointer_mut("/x").map(|v| *v = 1.5.into());
     ///
     ///     // "Steal" ownership of a value. Can replace with any valid Value.
     ///     let old_x = value.pointer_mut("/x").map(Value::take).unwrap();