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diff --git a/src/stlplus/strings/string_hash.tpp b/src/stlplus/strings/string_hash.tpp
new file mode 100644
index 0000000..b3b2a41
--- /dev/null
+++ b/src/stlplus/strings/string_hash.tpp
@@ -0,0 +1,27 @@
+////////////////////////////////////////////////////////////////////////////////
+
+//   Author:    Andy Rushton
+//   Copyright: (c) Southampton University 1999-2004
+//              (c) Andy Rushton           2004-2009
+//   License:   BSD License, see ../docs/license.html
+
+////////////////////////////////////////////////////////////////////////////////
+#include "string_sequence.hpp"
+
+namespace stlplus
+{
+
+  template<typename K, typename T, typename H, typename E, typename KS, typename TS>
+  std::string hash_to_string(const hash<K,T,H,E>& values,
+                             KS key_to_string_fn,
+                             TS value_to_string_fn,
+                             const std::string& pair_separator,
+                             const std::string& separator)
+  {
+    return pair_sequence_to_string(values.begin(), values.end(),
+                                   key_to_string_fn, value_to_string_fn,
+                                   pair_separator, separator);
+  }
+
+} // end namespace stlplus
+