title: Lua: Dimensions of a table
body: <p>This seems like a really easy, "google it for me" kind of question but I can't seem to get an answer to it. How do I find the dimensions of a table in Lua using a command similar to Numpy's <code>.shape</code> method?
  E.g. <code>blah = '2 x 3 table'; blah.lua_equivalent_of_shape = {2,3}</code></p>