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Lua data structures and builtin functions are ones of the most consistent sort I've seen around — if you get the whole picture.

They are just a bit unorthodoxal.

Oh, and the lack of an integer type seemed to make it really difficult to do proper bit shifting--i'd expect this to be the bread and butter of an embedded scripting language.

you apply the bit operator patch to get this.

You do not apply bit operator patch, you do use bitop library.

You can use SWIG with Lua.