From: Olivier Mengué <olivier.mengue@gmail.com>
Date: Wed, 1 May 2024 21:18:00 +0000 (+0200)
Subject: spec: clarify when range expression is evaluated
X-Git-Tag: go1.23rc1~483
X-Git-Url: http://www.git.cypherpunks.su/?a=commitdiff_plain;h=344075d9369103a453add5acf3cb6d68057e8423;p=gostls13.git

spec: clarify when range expression is evaluated

Clarify that the range expression of a "for" loop is called *just* once to
rule out that it might be re-evaluated after each iteration.

Change-Id: Iedb61cd29e5238ac0168b8ac01c34d6208cc4312
Reviewed-on: https://go-review.googlesource.com/c/go/+/582775
Reviewed-by: Robert Griesemer <gri@google.com>
Auto-Submit: Ian Lance Taylor <iant@google.com>
LUCI-TryBot-Result: Go LUCI <golang-scoped@luci-project-accounts.iam.gserviceaccount.com>
Reviewed-by: Ian Lance Taylor <iant@google.com>
---

diff --git a/doc/go_spec.html b/doc/go_spec.html
index ac27c1d6c1..277cd27775 100644
--- a/doc/go_spec.html
+++ b/doc/go_spec.html
@@ -6643,7 +6643,7 @@ the range clause is equivalent to the same clause without that identifier.
 </p>
 
 <p>
-The range expression <code>x</code> is evaluated once before beginning the loop,
+The range expression <code>x</code> is evaluated before beginning the loop,
 with one exception: if at most one iteration variable is present and <code>x</code> or
 <a href="#Length_and_capacity"><code>len(x)</code></a> is <a href="#Constants">constant</a>,
 the range expression is not evaluated.