isVersioned {Biobase} | R Documentation

## Determine whether object or class contains versioning information

### Description

This generic function checks to see whether `Versioned-class` information is present. When the argument to `isVersioned` is a character string, the prototype of the class corresponding to the string is consulted.

By default, `isVersioned` has the following behaviors:

`isVersioned(Versioned-instance)`

  Returns `TRUE` when the instance have version information.

`isCurrent("class-name")`

  Returns `TRUE` when the named class extends `Versioned-class`.

`isVersioned(ANY)`

  Returns `FALSE`

### Usage

    isVersioned(object)

### Arguments

`object` | Object or class name to check for version information, as described above.

### Value

`isVersioned` returns a logical indicating whether version information is present.

### Author(s)

Biocore team

### See Also

`Versions-class`

### Examples

    obj <- new("VersionedBiobase")
    isVersioned(obj)

    isVersioned(1:10) # FALSE

    A <- setClass("A", contains="VersionedBiobase",
             prototype=prototype(new("VersionedBiobase", versions=c(A="1.0.0"))))
    a <- A()
    isVersioned(a)

    removeClass("A")

[Package Biobase version 2.40.0 Index]