[MISC] pairwise_combine: compute size only once (#2059)

* [MISC pairwise_combine: compute size only once Co-authored-by: rrahn <[email protected]>
seqan · Aug 28, 2020 · bd513f4 · bd513f4
1 parent 8805266
commit bd513f4
Showing 1 changed file with 2 additions and 1 deletion.
diff --git a/include/seqan3/range/views/pairwise_combine.hpp b/include/seqan3/range/views/pairwise_combine.hpp
@@ -219,7 +219,8 @@ class pairwise_combine_view : public std::ranges::view_interface<pairwise_combin
         requires std::ranges::sized_range<underlying_range_type>
     //!\endcond
     {
-        return (std::ranges::size(u_range) * (std::ranges::size(u_range) - 1) / 2);
+        auto const size = std::ranges::size(u_range);
+        return (size * (size - 1)) / 2;
     }
     //!\}