tolstring

lua_shared

Function tolstring 

Source 
pub unsafe extern "C" fn tolstring(
    state: lua_State,
    index: i32,
    len: &mut usize,
) -> *const u8
Expand description

Converts the Lua value at the given acceptable index to a C string. If len is not NULL, it also sets *len with the string length. The Lua value must be a string or a number; otherwise, the function returns NULL. If the value is a number, then tolstring also changes the actual value in the stack to a string.