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24 lines
1.1 KiB
ReStructuredText
24 lines
1.1 KiB
ReStructuredText
as_table
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===========
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make sure an object is pushed as a table
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----------------------------------------
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.. code-block:: cpp
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template <typename T>
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as_table_t { ... };
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template <typename T>
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as_table_t<T> as_function ( T&& container );
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This function serves the purpose of ensuring that an object is pushed -- if possible -- like a table into Lua. The container passed here can be a pointer, a reference, a ``std::reference_wrapper`` around a container, or just a plain container value. It must have a begin/end function, and if it has a ``std::pair<Key, Value>`` as its ``value_type``, it will be pushed as a dictionary. Otherwise, it's pushed as a sequence.
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.. code-block:: cpp
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sol::state lua;
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lua.open_libraries();
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lua.set("my_table", sol::as_table(std::vector<int>{ 1, 2, 3, 4, 5 }));
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lua.script("for k, v in ipairs(my_table) do print(k, v) assert(k == v) end");
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Note that any caveats with Lua tables apply the moment it is serialized, and the data cannot be gotten out back out in C++ as a vector without explicitly using the ``as_table_t`` marker for your get and conversion operations using Sol. |