From 41ffa6df7ed3d76d91a06836849a04488cdb4878 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Martin=20Habov=C5=A1tiak?= <martin.habovstiak@gmail.com>
Date: Thu, 30 Jun 2022 18:28:52 +0200
Subject: [PATCH] Call `reserve()` in `DeserializeSeed` example

This suggests calling `reserve()` in example code so that people who ~blindly copy it get faster code.
---
 serde/src/de/mod.rs | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/serde/src/de/mod.rs b/serde/src/de/mod.rs
index 4a112a0af..6100815f7 100644
--- a/serde/src/de/mod.rs
+++ b/serde/src/de/mod.rs
@@ -708,6 +708,11 @@ impl<T> DeserializeOwned for T where T: for<'de> Deserialize<'de> {}
 ///             where
 ///                 A: SeqAccess<'de>,
 ///             {
+///                 // Decrease the number of reallocations if there are many elements
+///                 if let Some(size_hint) = seq.size_hint() {
+///                    self.0.reserve(size_hint);
+///                 }
+///
 ///                 // Visit each element in the inner array and push it onto
 ///                 // the existing vector.
 ///                 while let Some(elem) = seq.next_element()? {