From dc2493e7525bb7633f697ef10f72b72b46222249 Mon Sep 17 00:00:00 2001
From: Andy Belle-Isle <drumsetmonkey@gmail.com>
Date: Fri, 30 Aug 2019 00:45:36 -0400
Subject: Forget what I said, I just need to change git attributes to mark for
vendor
---
lib/sol2/examples/source/container_with_pairs.cpp | 40 +++++++++++++++++++++++
1 file changed, 40 insertions(+)
create mode 100644 lib/sol2/examples/source/container_with_pairs.cpp
(limited to 'lib/sol2/examples/source/container_with_pairs.cpp')
diff --git a/lib/sol2/examples/source/container_with_pairs.cpp b/lib/sol2/examples/source/container_with_pairs.cpp
new file mode 100644
index 0000000..7651a68
--- /dev/null
+++ b/lib/sol2/examples/source/container_with_pairs.cpp
@@ -0,0 +1,40 @@
+#define SOL_ALL_SAFETIES_ON 1
+#include <sol/sol.hpp>
+
+#include "assert.hpp"
+
+#include <unordered_set>
+#include <iostream>
+
+int main() {
+ struct hasher {
+ typedef std::pair<std::string, std::string> argument_type;
+ typedef std::size_t result_type;
+
+ result_type operator()(const argument_type& p) const {
+ return std::hash<std::string>()(p.first);
+ }
+ };
+
+ using my_set = std::unordered_set<std::pair<std::string, std::string>, hasher>;
+
+ std::cout << "=== containers with std::pair<> ===" << std::endl;
+
+ sol::state lua;
+ lua.open_libraries(sol::lib::base);
+
+ lua.set_function("f", []() {
+ return my_set{ { "key1", "value1" },{ "key2", "value2" },{ "key3", "value3" } };
+ });
+
+ lua.safe_script("v = f()");
+ lua.safe_script("print('v:', v)");
+ lua.safe_script("print('#v:', #v)");
+ // note that using my_obj:pairs() is a
+ // way around pairs(my_obj) not working in Lua 5.1/LuaJIT: try it!
+ lua.safe_script("for k,v1,v2 in v:pairs() do print(k, v1, v2) end");
+
+ std::cout << std::endl;
+
+ return 0;
+}
--
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