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itertools2

The R package itertools2 is a port of Python's excellent itertools module to R for efficient looping and is a replacement for the existing itertools R package.

Installation

You can install the stable version on CRAN:

install.packages('itertools2', dependencies=TRUE)

If you prefer to download the latest version, instead run the following after installing devtools:

devtools::install_github('ramhiser/itertools2')

License

The itertools2 R package is licensed under the MIT License. However, this package depends on the iterators R package, which is licensed under the Apache License, Version 2.0. Both packages are freely available for commercial and non-commerical usage. Please consult the licensing terms for more details.

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Version

Install

install.packages('itertools2')

Monthly Downloads

382

Version

0.1.1

License

MIT + file LICENSE

Issues

Pull Requests

Stars

Forks

Repository

https://github.com/ramhiser/itertools2

Homepage

http://ramhiser.com

Maintainer

John Ramey

Last Published

August 8th, 2014

Functions in itertools2 (0.1.1)

itertools2: Functions creating iterators for efficient looping

Computes the dot product of two iterable objects

Iterator that filters elements where corresponding selector is false.

Iterator that returns an object indefinitely

Helper function that determines the length of an iterator object

Iterator that returns elements while a predicate function returns TRUE

Calls iterators::nextElem(). If error, returns default value.

Consumes the first n elements of an iterator

Iterator that filters elements not satisfying a predicate function

Return the first n elements of an iterable object as a list

Iterator that iterates through several iterables concurrently.

Consumes an iterator and computes its length

iunique_justseen

Iterator that extracts the just-seen unique elements from an iterable object

Iterator that applies a given function to several iterables concurrently.

Iterator that returns elements of an object in pairs

Iterator that extracts the unique elements from an iterable object

Iterator that returns the Cartesian product of the arguments.

Iterator that iterates through several iterables concurrently.

Performs a deep copy of an iterator

Iterator that maps a function to a sequence of numeric values

Iterator that returns selected elements from an iterable.

Iterator of neverending numeric sequence with initial value and step size

Iterator that chains multiple arguments together into a single iterator

Returns the nth item of an iterator

Iterator that applies a given function to the elements of an iterable.

Iterators for sequence generation

Iterator that returns elements in fixed-length chunks

Iterator that cycles indefinitely through an iterable object

Iterator that replicates elements of an iterable object

Iterator that returns the elements of an object along with their indices

Helper function that determines whether is an iterator object

Iterator that traverses each given iterable in a roundrobin order

Helper function that determines whether an object inherits from a StopIteration exception

Iterator that drops elements until the predicate function returns FALSE

Iterator that returns an object followed indefinitely by a fill value

Returns a list of n independent iterators from a single iterable object

Count the number of times an iterable object is TRUE