From df5303b06cc3f28567203ab1ff34a23780bf9b2f Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stefan=20B=C3=BCttner?= <buettner.stefan@web.de>
Date: Wed, 11 Sep 2019 11:05:12 +0200
Subject: [PATCH] Initialize ValueConstraint from const reference.

This allows the following in post the c++11 world:
```
    tclap::ValueConstraint<std::string> constraints({"foo", "bar"});
```
instead of
```
    std::vector<std::string> constraint_choices({"foo", "bar"});
    tclap::ValueConstraint<std::string> constraints(constraint_choices);
```
---
 include/tclap/ValuesConstraint.h | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/include/tclap/ValuesConstraint.h b/include/tclap/ValuesConstraint.h
index a234297..c9ca80a 100644
--- a/include/tclap/ValuesConstraint.h
+++ b/include/tclap/ValuesConstraint.h
@@ -50,7 +50,7 @@ class ValuesConstraint : public Constraint<T>
 		 * Constructor. 
 		 * \param allowed - vector of allowed values. 
 		 */
-		ValuesConstraint(std::vector<T>& allowed);	
+		ValuesConstraint(std::vector<T>const& allowed);
 
 		/**
 		 * Virtual destructor.
@@ -89,7 +89,7 @@ class ValuesConstraint : public Constraint<T>
 };
 
 template<class T>
-ValuesConstraint<T>::ValuesConstraint(std::vector<T>& allowed)
+ValuesConstraint<T>::ValuesConstraint(std::vector<T> const& allowed)
 : _allowed(allowed),
   _typeDesc("")
 {