From 4a5ff1b52dd3892ff8d0831c1e8f7a43619b9c59 Mon Sep 17 00:00:00 2001
From: Thibault Hallouin <thibault.hallouin@inrae.fr>
Date: Wed, 21 Dec 2022 14:48:37 +0100
Subject: [PATCH] tidy up

---
 include/evalhyd/evald.hpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/include/evalhyd/evald.hpp b/include/evalhyd/evald.hpp
index 671d1a1..ae72bea 100644
--- a/include/evalhyd/evald.hpp
+++ b/include/evalhyd/evald.hpp
@@ -3,7 +3,6 @@
 
 #include <unordered_map>
 #include <vector>
-#include <optional>
 
 #include <xtensor/xexpression.hpp>
 #include <xtensor/xtensor.hpp>
@@ -160,6 +159,7 @@ namespace evalhyd
             const std::vector<std::string>& dts = {}
     )
     {
+        // retrieve real types of the expressions
         const D2& q_obs_ = q_obs.derived_cast();
         const D2& q_prd_ = q_prd.derived_cast();
 
-- 
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