The type(expr, ByteArray) function returns true if expr is a ByteArray.

A ByteArray is a one-dimensional Array with data type ${\mathrm{integer}}_1$.

This is the standard way of representing an arbitrary chunk of binary data

$A≔\mathrm{StringTools}:-\mathrm{ToByteArray}\left(''Lorem\; ipsum\; dolor\; sit\; amet''\right)$

$A≔\left[\begin{array}{cccccccccccccccccccccccccc}76& 111& 114& 101& 109& 32& 105& 112& 115& 117& 109& 32& 100& 111& 108& 111& 114& 32& 115& 105& 116& 32& 97& 109& 101& 116\end{array}\right]$

$\mathrm{type}\left(A\,\mathrm{ByteArray}\right)$

$\mathrm{true}$

$B≔\mathrm{convert}\left(\left[2\,3\,5\,7\,11\,13\right]\,\mathrm{ByteArray}\right)$

$B≔\left[\begin{array}{cccccc}2& 3& 5& 7& 11& 13\end{array}\right]$

$\mathrm{type}\left(B\,\mathrm{ByteArray}\right)$

$\mathrm{true}$

The type/ByteArray command was introduced in Maple 2015.

For more information on Maple 2015 changes, see Updates in Maple 2015.