ScalarObject-class: Utility classes for length one (scalar) objects
Description
These classes represent scalar quantities, such as a string or a
number and are useful because they provide their own validity
checking. The classes ScalarCharacter, ScalarLogical,
ScalarInteger, and ScalarNumeric all extend their
respective base vector types and can be used interchangeably (except
they should always have length one).
The mkScalar factory function provides a convenient way of
creating Scalar objects (see the examples section below).
Usage
mkScalar(obj)
Arguments
obj
An object of type character, logical,
integer, or double