Versioned {Biobase} | R Documentation

## Class "Versioned"

### Description

Use this class as a ‘superclass’ for classes requiring information about versions.

### Methods

The following are defined; package developers may write additional methods.

`new("Versioned", ..., versions=list())`

  Create a new `Versioned-class` instance, perhaps with additional named version elements (the contents of `versions`) added. Named elements of `versions` are character strings that can be coerced using `package_version`, or `package_version` instances.

`classVersion(object)`

  Obtain version information about instance `object`. See `classVersion`.

`classVersion(object) <- value`

  Set version information on instance `object` to `value`; useful when `object` is an instance of a class that contains `VersionClass`. See `classVersion`.

`classVersion(object)["id"] <- value`

  Create or update version information `"id"` on instance `object` to `value`; useful when `object` is an instance of a class that contains `VersionClass`. See `classVersion`.

`show(object)`

  Default method returns `invisible`, to avoid printing confusing information when your own class does not have a `show` method defined. Use `classVersion(object)` to get or set version information.

### Author(s)

Biocore

### See Also

`Versions-class`

### Examples

    obj <- new("Versioned", versions=list(A="1.0.0"))
    obj
    classVersion(obj)

    A <- setClass("A", contains="Versioned")

    classVersion("A")
    a <- A()
    a # 'show' nothing by default
    classVersion(a)

    B <- setClass("B", contains="Versioned",
             prototype=prototype(new("Versioned",versions=list(B="1.0.0"))))

    classVersion("B")
    b <- B()
    classVersion(b)

    classVersion(b)["B"] <- "1.0.1"
    classVersion(b)
    classVersion("B")

    classVersion("B") < classVersion(b)
    classVersion(b) == "1.0.1"

    C <- setClass("C",
             representation(x="numeric"),
             contains=("VersionedBiobase"),
             prototype=prototype(new("VersionedBiobase", versions=c(C="1.0.1"))))

    setMethod("show", signature(object="C"),
              function(object) print(object@x))

    c <- C(x=1:10)
    c

    classVersion(c)

[Package Biobase version 2.50.0 Index]