Editing Array programming (section)

====MATLAB====
The implementation in [[MATLAB]] allows the same economy allowed by using the Fortran language.
<syntaxhighlight lang="matlab">
A = A + B;
</syntaxhighlight>

A variant of the MATLAB language is the [[GNU Octave]] language, which extends the original language with augmented assignments:
<syntaxhighlight lang="octave">
A += B;
</syntaxhighlight>

Both MATLAB and GNU Octave natively support [[linear algebra]] operations such as matrix multiplication, [[matrix inversion]], and the numerical solution of [[system of linear equations]], even using the [[Moore–Penrose pseudoinverse]].<ref>{{cite web |title= GNU Octave Manual. Arithmetic Operators. |url= https://www.gnu.org/software/octave/doc/interpreter/Arithmetic-Ops.html |access-date= 2011-03-19}}</ref><ref>{{cite web |title= MATLAB documentation. Arithmetic Operators. |url= http://www.mathworks.com/help/techdoc/ref/arithmeticoperators.html |access-date= 2011-03-19 |archive-date= 2010-09-07 |archive-url= https://web.archive.org/web/20100907074906/http://www.mathworks.com/help/techdoc/ref/arithmeticoperators.html |url-status= dead }}</ref>

The [[Nial]] example of the inner product of two arrays can be implemented using the native matrix multiplication operator. If <code>a</code> is a row vector of size [1 n] and <code>b</code> is a corresponding column vector of size [n 1].

 a * b;

By contrast, the [[entrywise product]] is implemented as:

 a .* b;

The inner product between two matrices having the same number of elements can be implemented with the auxiliary operator <code>(:)</code>, which reshapes a given matrix into a column vector, and the [[transpose]] operator <code>'</code>:

 A(:)' * B(:);