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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

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:

In[1]:=

Out[1]=

In[2]:=

Out[2]=

These are not vectors:

In[1]:=

Out[1]=

In[2]:=

Out[2]=

Use specific tests to generalize or specialize:

In[1]:=

Out[1]=

In[2]:=

Out[2]=

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: