Class "positiveIndex", index class representing a sequence of non-negative integers

Description

This represents a subscript of arbitrary non-negative integers.

Objects from the Class

Objects can be created by calls of the form new("positiveIndex", val). If val is missing, the result is an object of class "positiveIndex" of length 0. Otherwise, it is coerced to an integer and an object of class "positiveIndex" is created which has the same .Data slot as val. The rangeIndex and noNA slots are calculated by the initialization code.

Slots

.Data:

Object of class "integer", the actual index values.

rangeIndex:

Object of class "integer" of length 2, same as range(.Data).

noNA:

Object of class "logical" of length 1, same as !any(is.na(.Data)).

Extends

Class "integer", directly. Class "vectorIndex", directly.

Methods

Signature components for the methods are:

x+scalar

Add scalar to x. Result is x with x@.Data replaced by x@.Data+scalar.

scalar+x

Add scalar to x. Result is x with x@.Data replaced by x@.Data+scalar.

x*scalar

Multiply x by scalar. Result is x with x@.Data replaced by x@.Data*scalar.

scalar*x

Multiply x by scalar. Result is x with x@.Data replaced by x@.Data*scalar.

dim(x) <- value

Set a dimension on x. If value is of length 2, this may create a "matrixIndex".

x[i]

Subset x. If length of i is 0, the result is an object of class "noneIndex". Otherwise, the result is an object of class "sliceIndex" or of class "positiveIndex".

x[]

Subset x with the subscript missing. Result is x.

allNA(x)

Are all elements of x NA? Result is all(is.na(x@.Data)).

anyNA(x)

Is any element of x NA? Result is any(is.na(x@.Data)).

as.integer(x)

Convert x to an R subscript - adds 1 to each element of x@.Data.

initialize(.Object, .Data)

Initialize .Object.