intermediate changes

ref:cde9a383711a11544ce7e107a78147fb96cc4029

1 files changed, 22 insertions, 0 deletions

diff --git a/library/cpp/messagebus/www/concat_strings.h b/library/cpp/messagebus/www/concat_strings.h
new file mode 100644
index 0000000000..7b730564eb
--- /dev/null
+++ b/library/cpp/messagebus/www/concat_strings.h
@@ -0,0 +1,22 @@
+#pragma once
+
+#include <util/generic/string.h>
+#include <util/stream/str.h>
+
+// ATTN: not equivalent to TString::Join - cat concat anything "outputable" to stream, not only TString convertable types.
+
+inline void DoConcatStrings(TStringStream&) {
+}
+
+template <class T, class... R>
+inline void DoConcatStrings(TStringStream& ss, const T& t, const R&... r) {
+    ss << t;
+    DoConcatStrings(ss, r...);
+}
+
+template <class... R>
+inline TString ConcatStrings(const R&... r) {
+    TStringStream ss;
+    DoConcatStrings(ss, r...);
+    return ss.Str();
+}