Overview

A sample collection of TypeScript 's Array extension method.

System requirements

• Node.js 14.x
• TypeScript 4.5.x
• jest 27.x (Unit Test)

Extension Method list

Array

Extension Method	TypeScript file	C# LINQ	Overview
select	./src/ext/array/alias-linq.ts	Select	Project each element of the array to a new array.
where	./src/ext/array/alias-linq.ts	Where	Extract the array under specified conditions.
all	./src/ext/array/alias-linq.ts	All	Determines whether all elements of the array satisfy the condition.
skip	./src/ext/array/alias-linq.ts	Skip	Skips the specified number of elements from the beginning and returns the remaining array.
take	./src/ext/array/alias-linq.ts	Take	Returns the specified number of elements from the beginning of the array.
any	./src/ext/array/any.ts	Any	True if there is even one case that matches the condition
sum	./src/ext/array/calc.ts	Sum	Gets the total value of numeric array.
average	./src/ext/array/calc.ts	Average	Gets the average value of numeric array.
max	./src/ext/array/calc.ts	Max	Get the maximum value of a numeric array.
min	./src/ext/array/calc.ts	Min	Get the minimum value of a numeric array.
deepCopy	./src/ext/array/deep-copy.ts	-	Deep copy the Array.
distinct	./src/ext/array/distinct.ts	Distinct	Remove array duplication.
distinctBy	./src/ext/array/distinct.ts	-	We will eliminate duplicates from arrays by comparing judgment targets.
equalTo	./src/ext/array/equal-to.ts	-	True if the contents of the array are the same
first	./src/ext/array/first.ts	First	Get the first data of the array.
last	./src/ext/array/last.ts	Last	Get the last data of the array.
orderBy	./src/ext/array/orderby.ts	-	Sort based on the specified sort item.
selectMany	./src/ext/array/select-many.ts	SelectMany	Combine the values returned by callbackfn and return them as an array.
toLookup	./src/ext/array/to-lookup.ts	ToLookup	Convert array to Map<K, V[]>
toMap	./src/ext/array/to-map.ts	ToMap	Convert array to Map.
toSet	./src/ext/array/to-set.ts	-
zip	./src/ext/array/zip.ts	Zip	Applies one specified function to corresponding elements of two sequences, producing one sequence as a result.
trim	./src/ext/array/trim.ts	-	Remove null or undefined in array.

Map

Extension Method	TypeScript file	Overview
toArray	./src/ext/map/to-array.ts	Convert Map to an Array.

Boolean

Extension Method	TypeScript file	Overview
toggle	./src/ext/boolean/toggle.ts	Toggle boolean true / false.

Object

Extension Method	TypeScript file	Overview
deepCopy	./src/ext/object/deep-copy.ts	Deep copy the Object.
equalTo	./src/ext/object/equal-to.ts	True if the contents of the object are the same.