Function: groupBy()

groupBy<TItem>(items, getKey): GroupByResult<TItem>

Groups an array with keys determined by specified getKey() callback. Resulting object contains group objects in order and a dictionary to access by key. This is similar to LINQ's ToLookup function with some additional details like start index.

Type Parameters

• TItem

Parameters

items

TItem[]

Array to group.

getKey

(x) => any

Function that returns key for each item.

Returns

GroupByResult<TItem>

GroupByResult object.

Defined in

src/q/arrays-compat.ts:70