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lua_pushlightuserdata

tlua::ffi

Function lua_pushlightuserdata 

Source 
pub unsafe extern "C-unwind" fn lua_pushlightuserdata(
    l: *mut lua_State,
    ud: *mut c_void,
)
Expand description

Pushes a light userdata onto the stack. [-0, +1, -]

Userdata represent C values in Lua. A light userdata represents a pointer. It is a value (like a number): you do not create it, it has no individual metatable, and it is not collected (as it was never created). A light userdata is equal to “any” light userdata with the same C address.