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Built-in Mathematica Symbol

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VectorQ

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.

MORE INFORMATION

VectorQ[expr, NumberQ] tests whether expr is a vector of numbers.

EXAMPLES

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Basic Examples (3)

Test whether an object is a vector:

These are not vectors:

Use specific tests to generalize or specialize:

Test whether an object is a vector:

These are not vectors:

Use specific tests to generalize or specialize:

Scope (3)

Test for a vector of integers:

Test for a vector of machine-real numbers:

Test for a vector of real-valued numeric quantities:

Faster test for explicit real-valued numbers:

Applications (1)

Define a function that only evaluates for vector arguments:

Numerically find the minimum of the functions with

components:

Properties & Relations (2)

VectorQ is a special case of ArrayQ:

A function equivalent to VectorQ: