icount: Iterator of numeric sequence with initial value and step size

In ramhiser/itertools2: Iterators for efficient looping

Description

Constructs an iterator that generates a sequence of evenly spaced values starting with icount. The step size is given by step. By default, the sequence is neverending unless the optional stop is provided.

Usage

icount(start = 0, step = 1, stop = NULL)

Arguments

start	sequence's initial value
step	sequence's step size
stop	optional stopping point to sequence

Details

NOTE: Use a negative step size to generate decreasing sequences.

Often used as an argument to imap to generate consecutive data points.

Value

sequence's iterator

Examples

it <- icount()
iterators::nextElem(it)
iterators::nextElem(it)
iterators::nextElem(it)

it2 <- icount(start=5.5, step=1.5)
iterators::nextElem(it2)
iterators::nextElem(it2)
iterators::nextElem(it2)

it3 <- icount(start=1, stop=3)
iterators::nextElem(it3)
iterators::nextElem(it3)
iterators::nextElem(it3)

ramhiser/itertools2 documentation built on May 26, 2019, 10:09 p.m.