| http://www.w3.org/ns/prov#value | - Recall that the monadic function # gives the length of a list. # 6 7 # 6 7 8 2 3 The monadic function $ gives the list-of-dimensions of its argument: L =: 5 6 7 $ L T =: 2 3 $ 1 $ T 5 6 7 3 1 1 1 1 1 1 2 3 Hence, if x is an array, the expression (# $ x) yields the length of the list-of-dimensions of x, that is, the dimension-count of x, which is 1 for a list, 2 for a table and so on.
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