VectorQ
 Usage
• VectorQ[expr] gives True if expr is a list or a one-dimensional SparseArray object, none of whose elements are themselves lists, and gives False otherwise.
• VectorQ[expr, test] gives True only if test yields True when applied to each of the elements in expr.
Notes
• VectorQ[expr, NumberQ] tests whether expr is a vector of numbers. • New in Version 1; modified in 2. • Advanced Documentation.
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