fold-collection
Advanced tools
A collection of useful functions using exclusively the 'fold'/'reduce' pattern
$ npm install --save fold-collection
Higher-order function applied to arrays, based on the concept of accumulators (i.e. return a value from the accumulation). Left associative, tail recursive.
Parameters
arr: Array, Array to work on
f: function, Function to apply ('a -> 'b -> 'a)
init: *, Initial value
Returns: *
Higher-order function applied to arrays, based on the concept of accumulators (i.e. return a value from the accumulation). Right associative, not tail recursive.
Parameters
arr: Array, Array to work on
f: function, Function to apply ('a -> 'b -> 'a)
init: *, Initial value
Returns: *, The accumulated value
Applies the and operator to all the boolean expressions
Parameters
arr: Array, Array of boolean expressions
Returns: Boolean
Checks if a predicate is satisfied by any item
Parameters
arr: Array, Checks if a predicate is satisfied by any item
f: function, The predicate
Returns: Boolean
Gets the average of a list of numbers
Parameters
arr: Array, Gets the average of a list of numbers
Returns: number
Merge a list of functions into one function
Parameters
arr: Array, Array of functions
Returns: function
Counts the number of occurrences of an element
Parameters
arr: Array, Counts the number of occurrences of an element
e: *, The element to check
Returns: Number
Drops every 'n' times from 'arr'
Parameters
arr: Array, Drops every 'n' times from 'arr'
n: Number, Drops every 'n' times from 'arr'
Returns: Array, New array with the items deleted
Filter the array based on a given property
Parameters
arr: Array, Filter the array based on a given property
f: function, The property/predicate to filter on
Returns: Array, The filtered array
Flatten an array of arrays
Parameters
arr: Array, Array of arrays
deep: Boolean, Whether to perform a 'deep flattening'
Returns: Array, The flattened array
Performs a for loop
Parameters
arr: Array, Performs a for loop
f: function, The action to apply
Performs an insertion sort
Parameters
arr: Array, The array to sort
Returns: Array, The sorted array
Join the items of an array into a string
Parameters
arr: Array, Join the items of an array into a string
optional: String, sep The separator. Default: ','
Returns: String, The resulting string
Creates a new array with the results of calling a provided function on every element
Parameters
arr: Array, Creates a new array with the results of calling a provided function on every element
f: function, Creates a new array with the results of calling a provided function on every element
Returns: Array, The new array
Performs multiple maps
Parameters
arr: Array, Performs multiple maps
fs: Array, Array of functions to map
Returns: Array, The new array
Get the maximum item
Parameters
arr: Array, Get the maximum item
Returns: *
Checks whether 'e' is in 'arr'
Parameters
arr: Array, Checks whether 'e' is in 'arr'
e: *, The element to test
Returns: Boolean
Get the minimum item
Parameters
arr: Array, Get the minimum item
Returns: *
Negate all numbers in the array
Parameters
arr: Array, Negate all numbers in the array
Returns: Array
Applies the or operator to all the boolean expressions
Parameters
arr: Array, Array of boolean expressions
Returns: Boolean
Partitions the array the array over a property
Parameters
arr: Array, Partitions the array the array over a property
f: function, Partitions the array the array over a property
Returns: Object, Object with key 'T' corresponding to all elements satisfying the property. 'F' otherwise.
Remove consecutive items from an array
Parameters
arr: Array, Remove consecutive items from an array
Returns: Array, The array without consecutive values
Replicate the items 'n' times
Parameters
arr: Array, Replicate the items 'n' times
n: Number, The replication amount
Returns: Array
Reverse an array
Parameters
arr: Array, Reverse an array
Returns: Array, The reversed array
Get the length of an array
Parameters
arr: Array, Get the length of an array
Returns: Number, Length
Get the sum of an array of numbers
Parameters
arr: Array, Get the sum of an array of numbers
Returns: Number
Take just the elements at the nth position
Parameters
arr: Array, Take just the elements at the nth position
n: Number, nth position
Returns: Array
Check the test file
MIT © Ossama Edbali
FAQs
Collection of useful functions using the fold/reduce pattern
The npm package fold-collection receives a total of 2 weekly downloads. As such, fold-collection popularity was classified as not popular.
We found that fold-collection demonstrated a not healthy version release cadence and project activity because the last version was released a year ago. It has 1 open source maintainer collaborating on the project.
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