Extra-array.min NPM

An array is a collection of values, stored contiguously. :package: NPM, :smiley_cat: GitHub, :running: RunKit, :vhs: Asciinema, :moon: Minified, :scroll: Files, :newspaper: JSDoc, :blue_book: Wiki.

All functions except from*() take array as 1st parameter. Some methods accept a map function for faster comparision (like unique). I find the map-approach beautiful, which i learned from Haskell's sortOn(). You can notice that i have followed Javascript naming scheme as far as possible. Some names are borrowed from Haskell, Python, Java, Processing.

Methods look like:

swap(): doesn't modify the array itself (pure).
swap$(): modifies the array itself (update).

Methods as separate packages:

@extra-array/swap: use rollup to bundle this es module.
@extra-array/swap.min: use in browser (browserify, uglify-js).

Stability: Experimental.
This is browserified, minified version of extra-array. It is exported as global variable array. CDN: unpkg, jsDelivr.

const array = require("extra-array");
// import * as array from "extra-array";
// import * as array from "https://unpkg.com/extra-array@2.10.15/index.mjs"; (deno)

var x = [1, 2, 3];
array.get(x, -1);
// 3

var x = [1, 2, 3, 4];
array.swap(x, 0, 1);
// [2, 1, 3, 4]

var x = [1, 2, 3, 4];
array.rotate(x, 1);
// [4, 1, 2, 3]

var x = [1, 3, 5, 7];
array.bsearch(x, 5);
// 2           ^ found

[...array.permutations([1, 2, 3])];
// [
//   [],          [ 1 ],
//   [ 2 ],       [ 3 ],
//   [ 1, 2 ],    [ 1, 3 ],
//   [ 2, 1 ],    [ 2, 3 ],
//   [ 3, 1 ],    [ 3, 2 ],
//   [ 1, 2, 3 ], [ 1, 3, 2 ],
//   [ 2, 1, 3 ], [ 2, 3, 1 ],
//   [ 3, 1, 2 ], [ 3, 2, 1 ]
// ]

Index

Method	Action
is	Checks if value is array.
get	Gets value at index.
set	Sets value at index.
swap	Exchanges two values.
index	Gets zero-based index.
indexRange	Gets index range of part of array.
size	Counts the number of values.

fill	Fills with given value.
copy	Copies part of array to another.
concat	Appends values from arrays.
slice	Gets a part of array.
splice	Removes or replaces existing values.
flat	Flattens nested array to given depth.
cut	Breaks array when test passes.
chunk	Breaks array into chunks of given size.
cycle	Gives values that cycle through array.
repeat	Repeats an array given times.
reverse	Reverses the array.
rotate	Rotates values in array.
interleave	Merges values from arrays.

min	Finds smallest value.
max	Finds largest entry.
range	Finds smallest and largest entries.
map	Updates values based on map function.
filter	Keeps values which pass a test.
count	Counts values which satisfy a test.
partition	Segregates values by test result.
group	Breaks array keeping similar values together.
split	Breaks array considering test as separator.
zip	Combines values from arrays.

unique	Removes duplicate values.
union	Gives values present in any array.
intersection	Gives values present in both arrays.
difference	Gives values of array not present in another.
isUnique	Checks if there are no duplicate values.
isDisjoint	Checks if arrays have no value in common.

value	Picks an arbitrary value.
prefix	Picks an arbitrary prefix.
infix	Picks an arbitrary infix.
suffix	Picks an arbitrary suffix.
subsequence	Picks an arbitrary subsequence.
permutation	Picks an arbitrary permutation.

isEqual	Checks if two arrays are equal.
compare	Compares two arrays.
search	Finds index of first value passing a test.
bsearch	Binary searches leftmost value in sorted array.
find	Finds first value passing a test.
findIndex	Finds index of leftmost value passing a test.
sort	Arranges values in an order.

extra array accumulate cartesianProduct chunk compare concat copy copyWithin count countAs cut cutAt cutAtRight cutRight cycle difference drop dropRight dropWhile dropWhileRight entries every fill filter filterAt find findAll findRight flat flatMap forEach from fromApply fromRange get getAll getPath group hasInfix hasPath hasPermutation hasPrefix hasSubsequence hasSuffix hasValue head includes index indexOf indexRange infix infixes init interleave intermix interpolate intersection intersperse is isDisjoint isEmpty isEqual isUnique join keys last lastIndexOf left length map max middle min moveWithin partition partitionAs permutation permutations pop prefix prefixes push range reduce reduceRight reject rejectAt remove removePath repeat reverse right rotate scanUntil scanUntilRight scanWhile scanWhileRight search searchAll searchInfix searchInfixAll searchInfixRight searchRight searchSubsequence searchValue searchValueAll searchValueRight set setPath shift size slice some sort splice split splitAt subsequence subsequences suffix suffixes swap symmetricDifference tail take takeRight takeWhile takeWhileRight union unique unshift value values zip

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