From 63b49d3ff0a955c894cde296958fd54708913bea Mon Sep 17 00:00:00 2001
From: Dan Goodliffe <dan@randomdan.homeip.net>
Date: Tue, 5 Feb 2019 23:37:21 +0000
Subject: Skip lexical cast if naturally convertible

---
 libdbpp/command.h | 10 +++++++---
 1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/libdbpp/command.h b/libdbpp/command.h
index f200d69..ce003c9 100644
--- a/libdbpp/command.h
+++ b/libdbpp/command.h
@@ -41,9 +41,13 @@ namespace DB {
 			template<typename X>
 			static X get(const CommandOptionsMap & map, const std::string & key, const X & def)
 			{
-				auto i = map.find(key);
-				if (i != map.end()) {
-					return boost::lexical_cast<X>(i->second);
+				if (auto i = map.find(key); i != map.end()) {
+					if constexpr (std::is_convertible<CommandOptionsMap::mapped_type, X>::value) {
+						return i->second;
+					}
+					else {
+						return boost::lexical_cast<X>(i->second);
+					}
 				}
 				return def;
 			}
-- 
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