From 73b5c7c4ac49f97f8bc77001b34b163b0266fcf9 Mon Sep 17 00:00:00 2001
From: Mateusz Pusz <mateusz.pusz@gmail.com>
Date: Mon, 30 Sep 2019 08:51:45 +0200
Subject: [PATCH] `{+a} -> T` added to a Number concept

---
 src/include/units/bits/concepts.h | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/src/include/units/bits/concepts.h b/src/include/units/bits/concepts.h
index 61c3c48f..aaba6331 100644
--- a/src/include/units/bits/concepts.h
+++ b/src/include/units/bits/concepts.h
@@ -34,12 +34,13 @@ namespace units {
         { a - b } -> T;
         { a * b } -> T;
         { a / b } -> T;
+        { +a } -> T;
         { -a } -> T;
         { a += b } -> T&;
         { a -= b } -> T&;
         { a *= b } -> T&;
         { a /= b } -> T&;
-        { T{0} };// can construct a T from a zero
+        { T{0} };    // can construct a T from a zero
         // …
   };