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diff --git a/deps/tao_tuple/28626e99/include/tao/seq/is_all.hpp b/deps/tao_tuple/28626e99/include/tao/seq/is_all.hpp
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+++ b/deps/tao_tuple/28626e99/include/tao/seq/is_all.hpp
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+// The Art of C++ / Sequences
+// Copyright (c) 2015 Daniel Frey
+
+#ifndef TAOCPP_SEQUENCES_INCLUDE_IS_ALL_HPP
+#define TAOCPP_SEQUENCES_INCLUDE_IS_ALL_HPP
+
+#include "config.hpp"
+
+#ifndef TAOCPP_FOLD_EXPRESSIONS
+#include "integer_sequence.hpp"
+#endif
+
+#include <type_traits>
+
+namespace tao
+{
+  namespace seq
+  {
+
+#ifdef TAOCPP_FOLD_EXPRESSIONS
+
+    template< bool... Bs >
+    using is_all = std::integral_constant< bool, ( Bs && ... ) >;
+
+#else
+
+    template< bool... Bs >
+    using is_all = std::integral_constant< bool, std::is_same< integer_sequence< bool, true, Bs... >, integer_sequence< bool, Bs..., true > >::value >;
+
+#endif
+
+  }
+}
+
+#endif // TAOCPP_SEQUENCES_INCLUDE_IS_ALL_HPP