itertools2 (version 0.1.1)

irepeat: Iterator that returns an object indefinitely

Description

Constructs an iterator that returns an object over and over again.

Usage

irepeat(object, times = NULL)

Arguments

object

object to return indefinitely.

times

the number of times object is returned. If NULL (default), object is returned indefinitely.

Value

iterator that returns object

Details

Runs indefinitely unless the times argument is specified. Used as argument to imap for invariant function parameters. Also used with izip to create constant fields in a tuple record.

Examples

it <- irepeat(42)
iterators::nextElem(it)
iterators::nextElem(it)
iterators::nextElem(it)
# Further calls to iterators::nextElem(it) will repeat 42

it2 <- irepeat(42, times=4)
iterators::nextElem(it2)
iterators::nextElem(it2)
iterators::nextElem(it2)
iterators::nextElem(it2)

# The object can be a data.frame, matrix, etc
it3 <- irepeat(iris, times=4)
iterators::nextElem(it3)
iterators::nextElem(it3)
iterators::nextElem(it3)
iterators::nextElem(it3)