From 68c412316b475aaabf81cbbd27244846f01a687f Mon Sep 17 00:00:00 2001
From: Paul Backus <snarwin@gmail.com>
Date: Sat, 20 Jan 2024 10:22:42 -0500
Subject: [PATCH] Document element type parameter for isForwardRange

---
 std/range/primitives.d | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/std/range/primitives.d b/std/range/primitives.d
index fec5c85cb..85b700e8c 100644
--- a/std/range/primitives.d
+++ b/std/range/primitives.d
@@ -1011,6 +1011,15 @@ have a `save` function.
 
 See_Also:
     The header of $(MREF std,range) for tutorials on ranges.
+
+Params:
+    R = type to be tested
+    E = if present, the elements of the range must be
+        $(DDSUBLINK spec/const3, implicit_qualifier_conversions, qualifier-convertible)
+        to this type
+
+Returns:
+    `true` if R is a forward range (possibly with element type `E`), `false` if not
  */
 enum bool isForwardRange(R) = isInputRange!R
     && is(typeof((R r) { return r.save; } (R.init)) == R);