From 82444aa753180c9c13028066ae9ddc4933dc610d Mon Sep 17 00:00:00 2001 From: mandeep Date: Fri, 5 Oct 2018 18:22:19 -0400 Subject: [PATCH] Add doc comments about safest way to initialize a vector of zeros --- src/liballoc/vec.rs | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/src/liballoc/vec.rs b/src/liballoc/vec.rs index 2bc037e3fee..3188de51266 100644 --- a/src/liballoc/vec.rs +++ b/src/liballoc/vec.rs @@ -120,7 +120,9 @@ /// assert_eq!(vec, [1, 2, 3, 4]); /// ``` /// -/// It can also initialize each element of a `Vec` with a given value: +/// It can also initialize each element of a `Vec` with a given value. +/// Initializing a `Vec` in this manner is the most efficient and safest way to allocate a +/// vector of zeros as previously zeroed memory is requested from the operating system: /// /// ``` /// let vec = vec![0; 5]; -- 2.44.0