diff -r 6e3494943c91 -r 1a574113da20 src/DataTypeWriter.cpp
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/src/DataTypeWriter.cpp	Mon Jul 09 00:43:35 2018 +0200
@@ -0,0 +1,15 @@
+#include "../include/DataTypeWriter.h"
+
+namespace relpipe {
+namespace writer {
+
+template<typename T> string_t DataTypeWriter<T>::readString(std::istream &input) {
+	return toString(readValue(input));
+};
+
+template<typename T> void DataTypeWriter<T>::writeString(std::ostream& output, const string_t &stringValue) {
+	writeValue(output, toValue(stringValue));
+};
+
+}
+}