ScalarObject-class {Biobase} | R Documentation

## 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<type>` objects (see the examples section below).

### Usage

    mkScalar(obj)

### Arguments

`obj` | An object of type `character`, `logical`, `integer`, or `double`

### Author(s)

Seth Falcon

### Examples

    v <- list(mkScalar("a single string"),
              mkScalar(1),
              mkScalar(1L),
              mkScalar(TRUE))
    sapply(v, class)
    sapply(v, length)

[Package Biobase version 2.4.1 Index]