<A, E>(self: Enqueue<A, E>, cause: Cause<E>): booleanFails the queue with a cause synchronously. If the queue is already done, false is
returned.
When to use
Use when queue completion must be driven from synchronous internals while
preserving the full failure Cause.
Gotchas
This is an unsafe operation that directly modifies the queue without Effect wrapping.
Example (Failing queues with a cause synchronously)
import { Cause, Effect, Queue } from "effect"
const program = Effect.gen(function*() {
const queue = yield* Queue.bounded<number, string>(10)
// Create a cause and fail the queue synchronously
const cause = Cause.fail("Processing error")
const failed = Queue.failCauseUnsafe(queue, cause)
console.log(failed) // true
// The queue is now done with the specified failure cause
console.log(queue.state._tag) // "Done"
})completion
Source effect/Queue.ts:92416 lines
export const const failCauseUnsafe: <A, E>(
self: Enqueue<A, E>,
cause: Cause<E>
) => boolean
Fails the queue with a cause synchronously. If the queue is already done, false is
returned.
When to use
Use when queue completion must be driven from synchronous internals while
preserving the full failure Cause.
Gotchas
This is an unsafe operation that directly modifies the queue without Effect wrapping.
Example (Failing queues with a cause synchronously)
import { Cause, Effect, Queue } from "effect"
const program = Effect.gen(function*() {
const queue = yield* Queue.bounded<number, string>(10)
// Create a cause and fail the queue synchronously
const cause = Cause.fail("Processing error")
const failed = Queue.failCauseUnsafe(queue, cause)
console.log(failed) // true
// The queue is now done with the specified failure cause
console.log(queue.state._tag) // "Done"
})
failCauseUnsafe = <function (type parameter) A in <A, E>(self: Enqueue<A, E>, cause: Cause<E>): booleanA, function (type parameter) E in <A, E>(self: Enqueue<A, E>, cause: Cause<E>): booleanE>(self: Enqueue<A, E>(parameter) self: {
strategy: "suspend" | "dropping" | "sliding";
dispatcher: SchedulerDispatcher;
capacity: number;
messages: MutableList.MutableList<any>;
state: Queue.State<any, any>;
scheduleRunning: boolean;
toString: () => string;
toJSON: () => unknown;
}
interface Enqueue<in A, in E = never>An Enqueue is a queue that can be offered to.
Details
This interface represents the write-only part of a Queue, allowing you to offer
elements to the queue but not take elements from it.
Example (Offering through enqueue handles)
import { Effect, Queue } from "effect"
// Function that only needs write access to a queue
const producer = (enqueue: Queue.Enqueue<string>) =>
Effect.gen(function*() {
yield* Queue.offer(enqueue, "hello")
yield* Queue.offerAll(enqueue, ["world", "!"])
})
const program = Effect.gen(function*() {
const queue = yield* Queue.bounded<string>(10)
yield* producer(queue)
})
Companion namespace containing type-level metadata for the Enqueue
write-only queue interface.
Enqueue<function (type parameter) A in <A, E>(self: Enqueue<A, E>, cause: Cause<E>): booleanA, function (type parameter) E in <A, E>(self: Enqueue<A, E>, cause: Cause<E>): booleanE>, cause: Cause<E>(parameter) cause: {
reasons: ReadonlyArray<Reason<E>>;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
import CauseCause<function (type parameter) E in <A, E>(self: Enqueue<A, E>, cause: Cause<E>): booleanE>): boolean => {
if (self: Enqueue<A, E>(parameter) self: {
strategy: "suspend" | "dropping" | "sliding";
dispatcher: SchedulerDispatcher;
capacity: number;
messages: MutableList.MutableList<any>;
state: Queue.State<any, any>;
scheduleRunning: boolean;
toString: () => string;
toJSON: () => unknown;
}
Enqueue<in A, in E = never>.state: Queue.State<any, any>state._tag: "Open" | "Closing" | "Done"_tag !== "Open") {
return false
}
const const exit: Exit<never, E>exit = import corecore.const exitFailCause: <E>(
cause: Cause.Cause<E>
) => Exit.Exit<never, E>
cause: Cause<E>(parameter) cause: {
reasons: ReadonlyArray<Reason<E>>;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
const fail: Failure<never, E>const fail: {
_tag: "Failure";
cause: Cause.Cause<E>;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
import internalEffectinternalEffect.const exitZipRight: {
<A2, E2>(that: Exit.Exit<A2, E2>): <A, E>(
self: Exit.Exit<A, E>
) => Exit.Exit<A2, E | E2>
<A, E, A2, E2>(
self: Exit.Exit<A, E>,
that: Exit.Exit<A2, E2>
): Exit.Exit<A2, E | E2>
}
const exit: Exit<never, E>exit, const exitFailDone: Failure<
never,
Done<void>
>
const exitFailDone: {
_tag: "Failure";
cause: Cause.Cause<E>;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
import FailureFailure<never, function (type parameter) E in <A, E>(self: Enqueue<A, E>, cause: Cause<E>): booleanE>
if (
self: Enqueue<A, E>(parameter) self: {
strategy: "suspend" | "dropping" | "sliding";
dispatcher: SchedulerDispatcher;
capacity: number;
messages: MutableList.MutableList<any>;
state: Queue.State<any, any>;
scheduleRunning: boolean;
toString: () => string;
toJSON: () => unknown;
}
Enqueue<in A, in E = never>.state: {
readonly _tag: "Open";
readonly takers: Set<(_: Effect<void, any>) => void>;
readonly offers: Set<Queue.OfferEntry<any>>;
readonly awaiters: Set<(_: Effect<void, any>) => void>;
}
offers: Set<Queue.OfferEntry<any>>offers.Set<T>.size: numbersize === 0 &&
self: Enqueue<A, E>(parameter) self: {
strategy: "suspend" | "dropping" | "sliding";
dispatcher: SchedulerDispatcher;
capacity: number;
messages: MutableList.MutableList<any>;
state: Queue.State<any, any>;
scheduleRunning: boolean;
toString: () => string;
toJSON: () => unknown;
}
Enqueue<in A, in E = never>.messages: MutableList.MutableList<any>(property) Enqueue<in A, in E = never>.messages: {
head: MutableList.Bucket<A> | undefined;
tail: MutableList.Bucket<A> | undefined;
length: number;
}
const finalize: <A, E>(
self: Enqueue<A, E> | Dequeue<A, E>,
exit: Failure<never, E>
) => void
self: Enqueue<A, E>(parameter) self: {
strategy: "suspend" | "dropping" | "sliding";
dispatcher: SchedulerDispatcher;
capacity: number;
messages: MutableList.MutableList<any>;
state: Queue.State<any, any>;
scheduleRunning: boolean;
toString: () => string;
toJSON: () => unknown;
}
const fail: Failure<never, E>const fail: {
_tag: "Failure";
cause: Cause.Cause<E>;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
self: Enqueue<A, E>(parameter) self: {
strategy: "suspend" | "dropping" | "sliding";
dispatcher: SchedulerDispatcher;
capacity: number;
messages: MutableList.MutableList<any>;
state: Queue.State<any, any>;
scheduleRunning: boolean;
toString: () => string;
toJSON: () => unknown;
}
Enqueue<in A, in E = never>.state: Queue.State<any, any>state = { ...self: Enqueue<A, E>(parameter) self: {
strategy: "suspend" | "dropping" | "sliding";
dispatcher: SchedulerDispatcher;
capacity: number;
messages: MutableList.MutableList<any>;
state: Queue.State<any, any>;
scheduleRunning: boolean;
toString: () => string;
toJSON: () => unknown;
}
Enqueue<in A, in E = never>.state: {
readonly _tag: "Open";
readonly takers: Set<(_: Effect<void, any>) => void>;
readonly offers: Set<Queue.OfferEntry<any>>;
readonly awaiters: Set<(_: Effect<void, any>) => void>;
}
_tag: "Closing"_tag: "Closing", exit: Failure<never, E>(property) exit: {
_tag: "Failure";
cause: Cause.Cause<E>;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
const fail: Failure<never, E>const fail: {
_tag: "Failure";
cause: Cause.Cause<E>;
pipe: { <A>(this: A): A; <A, B = never>(this: A, ab: (_: A) => B): B; <A, B = never, C = never>(this: A, ab: (_: A) => B, bc: (_: B) => C): C; <A, B = never, C = never, D = never>(this: A, ab: (_: A) => B, bc: (_: B) => C, cd: (_: C) => D): D; <…;
toString: () => string;
toJSON: () => unknown;
}
Referenced by 5 symbols