effect-io-ai

Package: effect
Module: Ref

Ref.set

Sets the value of the Ref to the specified value.

When to use

Use to replace the current Ref value with a known value.

Example (Setting a value)

import { Effect, Ref } from "effect"

const program = Effect.gen(function*() {
  const ref = yield* Ref.make(0)
  yield* Ref.set(ref, 42)
  const value = yield* Ref.get(ref)
  console.log(value) // 42
})

// Using multiple operations
const program2 = Effect.gen(function*() {
  const ref = yield* Ref.make(0)
  yield* Ref.set(ref, 100)
  const value = yield* Ref.get(ref)
  console.log(value) // 100
})

See

• getAndSet for setting while returning the previous value
• setAndGet for setting while returning the new value

Signature

declare const set: (<A>(value: A) => (self: Ref<A>) => Effect.Effect<void>) & (<A>(self: Ref<A>, value: A) => Effect.Effect<void>)

Source

Since v2.0.0