Function groupBy

groupBy<A, K>(keyFn: ((a: A) => K), bufferSize?: number): (<E>(self: Source<A, E>) => Source<readonly [Source<A, E>, K, A], E>)
Type Parameters
- A
- K
Parameters
- keyFn: ((a: A) => K)
  - - (a: A): K
    - Parameters
      
      a: A
      
      Returns K
- Optional bufferSize: number
Returns (<E>(self: Source<A, E>) => Source<readonly [Source<A, E>, K, A], E>)
- - <E>(self: Source<A, E>): Source<readonly [Source<A, E>, K, A], E>
  - Type Parameters
    - E
    Parameters
    - self: Source<A, E>
    Returns Source<readonly [Source<A, E>, K, A], E>
- Defined in api/groupBy.ts:48

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