irep: Iterator that replicates elements of an iterable object

In itertools2: itertools2: Functions creating iterators for efficient looping

Description

Constructs an iterator that replicates the values of an object.

Usage

irep(object, times = 1, length.out = NULL, each = NULL)

irep_len(object, length.out = NULL)

Arguments

object	object to return indefinitely.
times	the number of times to repeat each element in object
length.out	non-negative integer. The desired length of the iterator
each	non-negative integer. Each element is repeated each times

Details

This function is intended an iterable version of the standard rep function. However, as exception, the recycling behavior of rep is intentionally not implemented.

Value

iterator that returns object

Examples

it <- irep(1:3, 2)
unlist(as.list(it)) == rep(1:3, 2)

it2 <- irep(1:3, each=2)
unlist(as.list(it2)) == rep(1:3, each=2)

it3 <- irep(1:3, each=2, length.out=4)
as.list(it3)

itertools2 documentation built on May 2, 2019, 3:37 p.m.