effect-io-ai

Package: effect
Module: Stream

Stream.runCount

Runs the stream and returns the number of elements emitted.

Example (Counting stream values)

import { Console, Effect, Stream } from "effect"

const stream = Stream.make(1, 2, 3, 4, 5)

const program = Effect.gen(function* () {
  const count = yield* Stream.runCount(stream)
  yield* Console.log(count)
})

Effect.runPromise(program)
// 5

Signature

declare const runCount: <A, E, R>(self: Stream<A, E, R>) => Effect.Effect<number, E, R>

Source

Since v2.0.0