Package: iterors 1.0

iterors: Fast, Compact Iterators and Tools

A fresh take on iterators in R. Designed to be cross-compatible with the 'iterators' package, but using the 'nextOr' method will offer better performance as well as more compact code. With batteries included: includes a collection of iterator constructors and combinators ported and refined from the 'iterators', 'itertools', and 'itertools2' packages.

Authors:Peter Meilstrup [cre, aut, cph], Folashade Daniel [aut], Revolution Analytics [aut, cph], Steve Weston [aut, cph], John A. Ramey [aut, cph], Kayla Schaefer [aut], Hadley Wickham [aut]

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iterors.pdf |iterors.html✨
iterors/json (API)
NEWS

# Install 'iterors' in R:
install.packages('iterors', repos = c('https://crowding.r-universe.dev', 'https://cloud.r-project.org'))

Peer review:

Bug tracker:https://github.com/crowding/iterors/issues

On CRAN:

6.02 score 4 stars 21 scripts 224 downloads 71 exports 1 dependencies

Last updated 2 years agofrom:ec34d9324e. Checks:OK: 7. Indexed: yes.

TargetResultDate
Doc / VignettesOKNov 09 2024
R-4.5-winOKNov 09 2024
R-4.5-linuxOKNov 09 2024
R-4.4-winOKNov 09 2024
R-4.4-macOKNov 09 2024
R-4.3-winOKNov 09 2024
R-4.3-macOKNov 09 2024

Exports:concatconsumecountdotproducthasNexti_accumi_applyi_breaki_chaini_chunki_concati_dropi_dropwhilei_enumi_enumeratei_keepi_keepwhilei_limiti_mapi_maski_padi_recyclei_repi_repeati_rlei_rleinvi_roundrobini_slicei_stari_starmapi_teei_timeouti_uniquei_windowi_zipi_zip_longesticombinationsicounticountnidedupidivienumerateigridihasNextipermutationsirbinomiread.tableireadBinireaddfireadLinesireplayirnbinomiRNGStreamiRNGSubStreamirnormirpoisirunifis.iterorisampleiseqiseq_alongisplititabulateiterormakeIwrappernextOrnthquantifyrecordreducetake

Dependencies:rlang

Cross reference from iterarors/itertools to iterors

Rendered fromcross-reference.Rmdusingknitr::rmarkdownon Nov 09 2024.

Last update: 2023-05-09
Started: 2023-05-02

Index of iteror functions by task

Rendered fromcategories.Rmdusingknitr::rmarkdownon Nov 09 2024.

Last update: 2023-05-14
Started: 2023-05-02

The iterors package: Fast, compact iteration and tools

Rendered fromREADME.Rmdusingknitr::rmarkdownon Nov 09 2024.

Last update: 2023-05-14
Started: 2023-05-07

Using the iterors package

Rich Calaway (originally for package iterators), Peter Meilstrup (adapted for package iterors)

Rendered fromiterors.Rmdusingknitr::rmarkdownon Nov 09 2024.

Last update: 2023-05-10
Started: 2023-05-07

Writing Custom Iterators

Steve Weston (originally for package iterators), Peter Meilstrup (adapted for package iterors)

Rendered fromwriting.Rmdusingknitr::rmarkdownon Nov 09 2024.

Last update: 2023-05-18
Started: 2023-05-06

Readme and manuals

Help Manual

Help pageTopics
Collect all (or some given number of) values from an iteror, returning a vector of the given type.as.character.iteror as.double.iteror as.list.iteror as.logical.iteror as.numeric.iteror as.vector.iteror
Concatenate contents of multiple iterators into a vector.concat concat.default concat.iteror
Consumes the first n elements of an iteratorconsume consume.iteror
Consumes an iterator and computes its lengthcount
Computes the dot product of two iterable objects.dotproduct
Does This Iterator Have A Next ElementhasNext hasNext.ihasNext ihasNext
Apply a function to each element of an iterator.i_apply
Create an iterator that can be told to stop.i_break
Combine an iterator's values into chunks.i_chunk
Iteror that chains multiple arguments together into a single iteratori_chain i_concat
Iterator that drops elements until the predicate function returns FALSEi_dropwhile
Iterator that returns the elements of an object along with their indicesienumerate i_enum i_enumerate i_enumerate.array i_enumerate.default
Iterator that filters elements not satisfying a predicate functionifilter ifilterfalse i_drop i_keep
Iterator that returns elements while a predicate function returns TRUEi_keepwhile
Limit the length of an iterator.i_limit
Iterator that applies a given function to several iterables concurrently.i_map
Iterator that filters elements where corresponding selector is false.i_mask
Iterator that returns an object followed indefinitely by a fill valuei_pad
Create a recycling iteratori_recycle
Repeat values from an iterator.i_rep
Create a repeating iteratori_repeat
Run-length encoding iterator.i_rle i_rleinv
Iteror that traverses each given iterable in a roundrobin orderi_roundrobin
Iteror that returns selected elements from an iterable.i_slice
Iteror that applies a given function to the elements of an iterable.i_star i_starmap
Create multiple iterators from one sourcei_tee
Create a timeout iteratori_timeout
Iterator that extracts the unique elements from an iterable objecti_unique
Construct a sliding window over an iteratori_window
Combine several iterables in parallel.i_zip i_zip_longest
Iterator that generates all combinations of a vector taken m at a time.icombinations
Counting Iteratorsicount icountn
Drop duplicated items from an iterator.idedup
Dividing Iteratoridiv
Iterator that covers the Cartesian product of the arguments.igrid
Iterator that generates all permutations of a vector.ipermutations
Iterator over Rows of a Data Frame Stored in a Fileiread.table
Create an iterator to read binary data from a connectionireadBin
Create an iterator to read data frames from filesireaddf
Iterator over Lines of Text from a ConnectionireadLines
Iterators returning distant random-number seeds.iRNGStream iRNGSubStream
Random Number Iteratorsirbinom irnbinom irnorm irpois irunif isample
'is.iteror' indicates if an object is an iteror.is.iterator is.iteror
Iterators for sequence generationiseq iseq_along
Split Iteratorisplit
Iterator that maps a function to a sequence of numeric valuesitabulate
Make an iteror from a given object.iteror iteror.connection iteror.default iteror.iter
Iterate over an array or data frame by a specified dimension.iteror.array iteror.data.frame iteror.matrix
Construct an iteror object with custom-programmed behavior.iteror.function
Iterator Constructor-Constructor Function WrappermakeIwrapper
Retreive the next element from an iteror.nextOr
Returns the nth item of an iterornth
Count the number of times an iterable object is TRUEquantify
Wrap an iteror to appear as a Python iterator or vice versa.iteror.python.builtin.object r_to_py.iteror
Record and replay iteratorsireplay record
Compute the sum, product, or general reduction of an iterator.i_accum prod.iteror reduce reduce.iteror sum.iteror
Return the first n elements of an iterable object in a vector.take take.default take.iteror