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authorlouiz’ <louiz@louiz.org>2016-08-21 01:04:32 +0200
committerlouiz’ <louiz@louiz.org>2016-08-21 01:51:52 +0200
commit992fa938951558f4515145c9b82af0123c979a29 (patch)
tree421be454fb10e8af6ba1aa92f2ad23c8e6cbde3f /src/utils/get_first_non_empty.hpp
parentc97e3498216e24ceb4633a5fdce0847ea0609103 (diff)
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Add get_first_non_empty and use it into Database to simplify a little bit
Diffstat (limited to 'src/utils/get_first_non_empty.hpp')
-rw-r--r--src/utils/get_first_non_empty.hpp20
1 files changed, 20 insertions, 0 deletions
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)...);
+}