2.4 - Why is concatenation (
..) right associative? See AssociativityOfConcatenation.
2.5 - Concerning "An associative array is an array that can be indexed not only with numbers, but also with strings or any other value in the language, except
Nil" and also 27.3 - p.252 - "The registry is a regular Lua table. As such, you can index it with any Lua value but nil."
NaN can fail too--see LuaList:2008-03/msg00603.html .
2.5 - What is the computational complexity of
O(log Na), where
Nais the size of the array part of the table.
Nis the total allocated size of the table, because every key has to be examined. --RiciLake
27.3 - p.254 - spelling: register -> registry (in "favor the environment over the register")
28.2 - The
luaL_newmetatable/luaL_getmetatable/luaL_checkudata functions use a C string as a key into the registry. I'd prefer simply using a lightuserdata for this or storing the metatable as an upvalue (more efficient and less error prone). I also avoid passing a name to
luaL_register because there's an unnecessary risk of name conflicts, and this sets a global variable much like the
module function criticized in LuaModuleFunctionCritiqued. --DavidManura