Class "Versioned"
Use this class as a ‘superclass’ for classes requiring information about versions.
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) <- valueSet version information on instance object to value; useful when object is an instance of a class that contains VersionClass. See classVersion.
classVersion(object)["id"] <- valueCreate 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.
Biocore
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)Please choose more modern alternatives, such as Google Chrome or Mozilla Firefox.