diff options
Diffstat (limited to 'deps/sol2/examples/source/tutorials/erase_demo.cpp')
| -rw-r--r-- | deps/sol2/examples/source/tutorials/erase_demo.cpp | 30 |
1 files changed, 30 insertions, 0 deletions
diff --git a/deps/sol2/examples/source/tutorials/erase_demo.cpp b/deps/sol2/examples/source/tutorials/erase_demo.cpp new file mode 100644 index 0000000..3621a72 --- /dev/null +++ b/deps/sol2/examples/source/tutorials/erase_demo.cpp @@ -0,0 +1,30 @@ +#define SOL_ALL_SAFETIES_ON 1
+#include <sol/sol.hpp>
+
+#include <iostream>
+
+int main() {
+
+ sol::state lua;
+ lua["bark"] = 50;
+ sol::optional<int> x = lua["bark"];
+ // x will have a value
+ if (x) {
+ std::cout << "x has no value, as expected" << std::endl;
+ }
+ else {
+ return -1;
+ }
+
+ lua["bark"] = sol::lua_nil;
+ sol::optional<int> y = lua["bark"];
+ // y will not have a value
+ if (y) {
+ return -1;
+ }
+ else {
+ std::cout << "y has no value, as expected" << std::endl;
+ }
+
+ return 0;
+}
|