IsValueContainer
Checks if an object is a value container.
Syntax

IsValueContainer(X)

X
is any object

Description
IsValueContainer(X)
returns true
iff X
is a value container, that is, iff it can contain a collection of simple values of some kind, but not a collection of arbitrary objects.
IsValueContainer(X)
is a property of the class of X
.
The following classes are value containers:

real vectors (contains real numbers)

complex vectors (contains complex numbers)

real matrices (contains real numbers)

complex matrices (contains complex numbers)

strings (contains characters, which are technically strings of length 1)

pixmaps (contains pixels, which are technically colours)

tables (contains strings)

binary data (contains bytes, which are technically integers)