ByteArrayQ
ByteArrayQ[expr]
gives True if expr is a valid ByteArray object, and False otherwise.
Examples
Wolfram Research (2015), ByteArrayQ, Wolfram Language function, https://reference.wolfram.com/language/ref/ByteArrayQ.html.
Text
Wolfram Research (2015), ByteArrayQ, Wolfram Language function, https://reference.wolfram.com/language/ref/ByteArrayQ.html.
CMS
Wolfram Language. 2015. "ByteArrayQ." Wolfram Language & System Documentation Center. Wolfram Research. https://reference.wolfram.com/language/ref/ByteArrayQ.html.
APA
Wolfram Language. (2015). ByteArrayQ. Wolfram Language & System Documentation Center. Retrieved from https://reference.wolfram.com/language/ref/ByteArrayQ.html