[lua52-sys] add ref/unref functions and helper constants #162
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These are useful when adding things to the Lua registry. From the documentation at http://pgl.yoyo.org/luai/i/luaL_ref: > As long as you do not manually add integer keys into table t, luaL_ref > ensures the uniqueness of the key it returns. This can be done by hand with (say) an `AtomicIsize`, but it's just easier to use these functions.
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These are useful when adding things to the Lua registry. From the
documentation at http://pgl.yoyo.org/luai/i/luaL_ref:
This can be done by hand with (say) an
AtomicIsize, but it's justeasier to use these functions.