effect-io-ai

Package: effect
Module: Stream

Stream.changes

Emits only elements that differ from the previous one.

Example (Emitting changed values)

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

const program = Effect.gen(function*() {
  const values = yield* Stream.fromIterable([1, 1, 2, 2, 3]).pipe(
    Stream.changes,
    Stream.runCollect
  )

  yield* Console.log(values)
})

Effect.runPromise(program)
// [1, 2, 3]

Signature

declare const changes: <A, E, R>(self: Stream<A, E, R>) => Stream<A, E, R>

Source

Since v2.0.0