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author | Jonas Smedegaard <dr@jones.dk> | 2017-06-24 09:21:37 +0200 |
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committer | Jonas Smedegaard <dr@jones.dk> | 2017-06-24 09:21:37 +0200 |
commit | 3d39f109ba8ea7ae9778c58bd1665b9e8e0f45cb (patch) | |
tree | 9a5684babcd16d302fbe59c56b6045660ad62488 /src/utils/get_first_non_empty.hpp | |
parent | f9cee98aacd6aea8ccb7f5677b4ff1e1e234e4d1 (diff) | |
parent | c21cbbf9667991d2b928562a9c199e625d3f9bba (diff) | |
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Updated version 5.0 from 'upstream/5.0'
with Debian dir 2ae31d03ffb1d79153a692af23c7b2b097cc4b2b
Diffstat (limited to 'src/utils/get_first_non_empty.hpp')
-rw-r--r-- | src/utils/get_first_non_empty.hpp | 20 |
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)...); +} |