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Array

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JSONtoCSV

Converts an array of objects to a comma-separated values (CSV) string that contains only the columns specified.

all

Returns true if the provided predicate function returns true for all elements in a collection, false otherwise.

allEqual

Check if all elements in an array are equal.

any

Returns true if the provided predicate function returns true for at least one element in a collection, false otherwise.

arrayToCSV

Converts a 2D array to a comma-separated values (CSV) string.

bifurcate

Splits values into two groups. If an element in filter is truthy, the corresponding element in the collection belongs to the first group; otherwise, it belongs to the second group.

bifurcateBy

Splits values into two groups according to a predicate function, which specifies which group an element in the input collection belongs to. If the predicate function returns a truthy value, the collection element belongs to the first group; otherwise, it belongs to the second group.

chunk

Chunks an array into smaller arrays of a specified size.

compact

Removes falsy values from an array.

countBy

Groups the elements of an array based on the given function and returns the count of elements in each group.

countOccurrences

Counts the occurrences of a value in an array.

deepFlatten

Deep flattens an array.

difference

Returns the difference between two arrays.

differenceBy

Returns the difference between two arrays, after applying the provided function to each array element of both.

differenceWith

Filters out all values from an array for which the comparator function does not return true.

drop

Returns a new array with n elements removed from the left.

dropRight

Returns a new array with n elements removed from the right.

dropRightWhile

Removes elements from the end of an array until the passed function returns true. Returns the remaining elements in the array.

dropWhile

Removes elements in an array until the passed function returns true. Returns the remaining elements in the array.

everyNth

Returns every nth element in an array.

filterFalsy

Filters out the falsy values in an array.

filterNonUnique

Filters out the non-unique values in an array.

filterNonUniqueBy

Filters out the non-unique values in an array, based on a provided comparator function.

findLast

Returns the last element for which the provided function returns a truthy value.

findLastIndex

Returns the index of the last element for which the provided function returns a truthy value.

flatten

Flattens an array up to the specified depth.

forEachRight

Executes a provided function once for each array element, starting from the array's last element.

groupBy

Groups the elements of an array based on the given function.

head

Returns the head of a list.

indexOfAll

Returns all indices of val in an array. If val never occurs, returns [].

initial

Returns all the elements of an array except the last one.

initialize2DArray

Initializes a 2D array of given width and height and value.

initializeArrayWithRange

Initializes an array containing the numbers in the specified range where start and end are inclusive with their common difference step.

initializeArrayWithRangeRight

Initializes an array containing the numbers in the specified range (in reverse) where start and end are inclusive with their common difference step.

initializeArrayWithValues

Initializes and fills an array with the specified values.

initializeNDArray

Create a n-dimensional array with given value.

intersection

Returns a list of elements that exist in both arrays.

intersectionBy

Returns a list of elements that exist in both arrays, after applying the provided function to each array element of both.

intersectionWith

Returns a list of elements that exist in both arrays, using a provided comparator function.

isSorted

Returns 1 if the array is sorted in ascending order, -1 if it is sorted in descending order or 0 if it is not sorted.

join

Joins all elements of an array into a string and returns this string. Uses a separator and an end separator.

last

Returns the last element in an array.

longestItem

Takes any number of iterable objects or objects with a length property and returns the longest one. If multiple objects have the same length, the first one will be returned. Returns undefined if no arguments are provided.

mapObject

Maps the values of an array to an object using a function, where the key-value pairs consist of the stringified value as the key and the mapped value.

maxN

Returns the n maximum elements from the provided array. If n is greater than or equal to the provided array's length, then return the original array (sorted in descending order).

minN

Returns the n minimum elements from the provided array. If n is greater than or equal to the provided array's length, then return the original array (sorted in ascending order).

none

Returns true if the provided predicate function returns false for all elements in a collection, false otherwise.

nthElement

Returns the nth element of an array.

offset

Moves the specified amount of elements to the end of the array.

partition

Groups the elements into two arrays, depending on the provided function's truthiness for each element.

permutations

⚠️ WARNING: This function's execution time increases exponentially with each array element. Anything more than 8 to 10 entries will cause your browser to hang as it tries to solve all the different combinations.

Generates all permutations of an array's elements (contains duplicates).

pull

Mutates the original array to filter out the values specified.

pullAtIndex

Mutates the original array to filter out the values at the specified indexes.

pullAtValue

Mutates the original array to filter out the values specified. Returns the removed elements.

pullBy

Mutates the original array to filter out the values specified, based on a given iterator function.

reduceSuccessive

Applies a function against an accumulator and each element in the array (from left to right), returning an array of successively reduced values.

reduceWhich

Returns the minimum/maximum value of an array, after applying the provided function to set comparing rule.

reducedFilter

Filter an array of objects based on a condition while also filtering out unspecified keys.

reject

Filters an array's values based on a predicate function, returning only values for which the predicate function returns true.

remove

Removes elements from an array for which the given function returns false.

sample

Returns a random element from an array.

sampleSize

Gets n random elements at unique keys from array up to the size of array.

shank

Has the same functionality as Array.prototype.splice(), but returning a new array instead of mutating the original array.

shuffle

Randomizes the order of the values of an array, returning a new array.

similarity

Returns an array of elements that appear in both arrays.

sortedIndex

Returns the lowest index at which value should be inserted into array in order to maintain its sort order.

sortedIndexBy

Returns the lowest index at which value should be inserted into array in order to maintain its sort order, based on a provided iterator function.

sortedLastIndex

Returns the highest index at which value should be inserted into array in order to maintain its sort order.

sortedLastIndexBy

Returns the highest index at which value should be inserted into array in order to maintain its sort order, based on a provided iterator function.

stableSort

Performs stable sorting of an array, preserving the initial indexes of items when their values are the same. Does not mutate the original array, but returns a new array instead.

symmetricDifference

Returns the symmetric difference between two arrays, without filtering out duplicate values.

symmetricDifferenceBy

Returns the symmetric difference between two arrays, after applying the provided function to each array element of both.

symmetricDifferenceWith

Returns the symmetric difference between two arrays, using a provided function as a comparator.

tail

Returns all elements in an array except for the first one.

take

Returns an array with n elements removed from the beginning.

takeRight

Returns an array with n elements removed from the end.

takeRightWhile

Removes elements from the end of an array until the passed function returns true. Returns the removed elements.

takeWhile

Removes elements in an array until the passed function returns true. Returns the removed elements.

toHash

Reduces a given Array-like into a value hash (keyed data store).

union

Returns every element that exists in any of the two arrays once.

unionBy

Returns every element that exists in any of the two arrays once, after applying the provided function to each array element of both.

unionWith

Returns every element that exists in any of the two arrays once, using a provided comparator function.

uniqueElements

Returns all unique values of an array.

uniqueElementsBy

Returns all unique values of an array, based on a provided comparator function.

uniqueElementsByRight

Returns all unique values of an array, based on a provided comparator function, starting from the right.

uniqueSymmetricDifference

Returns the unique symmetric difference between two arrays, not containing duplicate values from either array.

without

Filters out the elements of an array, that have one of the specified values.

xProd

Creates a new array out of the two supplied by creating each possible pair from the arrays.

zip

Creates an array of elements, grouped based on the position in the original arrays.

zipObject

Given an array of valid property identifiers and an array of values, return an object associating the properties to the values.

zipWith

Creates an array of elements, grouped based on the position in the original arrays and using function as the last value to specify how grouped values should be combined.