From 992fa938951558f4515145c9b82af0123c979a29 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?louiz=E2=80=99?= <louiz@louiz.org>
Date: Sun, 21 Aug 2016 01:04:32 +0200
Subject: Add get_first_non_empty and use it into Database to simplify a little
 bit

---
 src/utils/get_first_non_empty.cpp | 11 +++++++++++
 src/utils/get_first_non_empty.hpp | 20 ++++++++++++++++++++
 2 files changed, 31 insertions(+)
 create mode 100644 src/utils/get_first_non_empty.cpp
 create mode 100644 src/utils/get_first_non_empty.hpp

(limited to 'src/utils')

diff --git a/src/utils/get_first_non_empty.cpp b/src/utils/get_first_non_empty.cpp
new file mode 100644
index 0000000..5b3bedb
--- /dev/null
+++ b/src/utils/get_first_non_empty.cpp
@@ -0,0 +1,11 @@
+#include <utils/get_first_non_empty.hpp>
+
+bool is_empty(const std::string& val)
+{
+  return val.empty();
+}
+
+bool is_empty(const int& val)
+{
+  return val == 0;
+}
diff --git a/src/utils/get_first_non_empty.hpp b/src/utils/get_first_non_empty.hpp
new file mode 100644
index 0000000..a38f5fb
--- /dev/null
+++ b/src/utils/get_first_non_empty.hpp
@@ -0,0 +1,20 @@
+#pragma once
+
+#include <string>
+
+bool is_empty(const std::string& val);
+bool is_empty(const int& val);
+
+template <typename T>
+T get_first_non_empty(T&& last)
+{
+  return last;
+}
+
+template <typename T, typename... Args>
+T get_first_non_empty(T&& first, Args&&... args)
+{
+  if (!is_empty(first))
+    return first;
+  return get_first_non_empty(std::forward<Args>(args)...);
+}
-- 
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