<N extends string>(name: N): <A, E, R>(
self: Stream<A, E, R>
) => Stream<{ [K in N]: A }, E, R>
<A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<
{ [K in N]: A },
E,
R
>Maps each element into a record keyed by the provided name.
Example (Binding values to a record key)
import { Console, Effect, Stream } from "effect"
const stream = Stream.make(1, 2, 3).pipe(Stream.bindTo("value"))
const program = Stream.runCollect(stream).pipe(Effect.flatMap(Console.log))
Effect.runPromise(program)
// [{ value: 1 }, { value: 2 }, { value: 3 }]do notation
Source effect/Stream.ts:105527 lines
export const const bindTo: {
<N extends string>(name: N): <A, E, R>(
self: Stream<A, E, R>
) => Stream<
{
[K in N]: A
},
E,
R
>
<A, E, R, N extends string>(
self: Stream<A, E, R>,
name: N
): Stream<
{
[K in N]: A
},
E,
R
>
}
Maps each element into a record keyed by the provided name.
Example (Binding values to a record key)
import { Console, Effect, Stream } from "effect"
const stream = Stream.make(1, 2, 3).pipe(Stream.bindTo("value"))
const program = Stream.runCollect(stream).pipe(Effect.flatMap(Console.log))
Effect.runPromise(program)
// [{ value: 1 }, { value: 2 }, { value: 3 }]
bindTo: {
<function (type parameter) N in <N extends string>(name: N): <A, E, R>(self: Stream<A, E, R>) => Stream<{ [K in N]: A; }, E, R>N extends string>(name: N extends stringname: function (type parameter) N in <N extends string>(name: N): <A, E, R>(self: Stream<A, E, R>) => Stream<{ [K in N]: A; }, E, R>N): <function (type parameter) A in <A, E, R>(self: Stream<A, E, R>): Stream<{ [K in N]: A; }, E, R>A, function (type parameter) E in <A, E, R>(self: Stream<A, E, R>): Stream<{ [K in N]: A; }, E, R>E, function (type parameter) R in <A, E, R>(self: Stream<A, E, R>): Stream<{ [K in N]: A; }, E, R>R>(self: Stream<A, E, R>(parameter) self: {
channel: Channel.Channel<Arr.NonEmptyReadonlyArray<A>, E, void, unknown, unknown, unknown, R>;
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; <…;
}
interface Stream<out A, out E = never, out R = never>A Stream<A, E, R> describes a program that can emit many A values, fail
with E, and require R.
Details
Streams are pull-based with backpressure and emit chunks to amortize effect
evaluation. They support monadic composition and error handling similar to
Effect, adapted for multiple values.
Example (Creating and consuming streams)
import { Console, Effect, Stream } from "effect"
const program = Effect.gen(function*() {
yield* Stream.make(1, 2, 3).pipe(
Stream.map((n) => n * 2),
Stream.runForEach((n) => Console.log(n))
)
})
Effect.runPromise(program)
// Output:
// 2
// 4
// 6
Stream<function (type parameter) A in <A, E, R>(self: Stream<A, E, R>): Stream<{ [K in N]: A; }, E, R>A, function (type parameter) E in <A, E, R>(self: Stream<A, E, R>): Stream<{ [K in N]: A; }, E, R>E, function (type parameter) R in <A, E, R>(self: Stream<A, E, R>): Stream<{ [K in N]: A; }, E, R>R>) => interface Stream<out A, out E = never, out R = never>A Stream<A, E, R> describes a program that can emit many A values, fail
with E, and require R.
Details
Streams are pull-based with backpressure and emit chunks to amortize effect
evaluation. They support monadic composition and error handling similar to
Effect, adapted for multiple values.
Example (Creating and consuming streams)
import { Console, Effect, Stream } from "effect"
const program = Effect.gen(function*() {
yield* Stream.make(1, 2, 3).pipe(
Stream.map((n) => n * 2),
Stream.runForEach((n) => Console.log(n))
)
})
Effect.runPromise(program)
// Output:
// 2
// 4
// 6
Stream<{ [function (type parameter) KK in function (type parameter) N in <N extends string>(name: N): <A, E, R>(self: Stream<A, E, R>) => Stream<{ [K in N]: A; }, E, R>N]: function (type parameter) A in <A, E, R>(self: Stream<A, E, R>): Stream<{ [K in N]: A; }, E, R>A }, function (type parameter) E in <A, E, R>(self: Stream<A, E, R>): Stream<{ [K in N]: A; }, E, R>E, function (type parameter) R in <A, E, R>(self: Stream<A, E, R>): Stream<{ [K in N]: A; }, E, R>R>
<function (type parameter) A in <A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<{ [K in N]: A; }, E, R>A, function (type parameter) E in <A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<{ [K in N]: A; }, E, R>E, function (type parameter) R in <A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<{ [K in N]: A; }, E, R>R, function (type parameter) N in <A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<{ [K in N]: A; }, E, R>N extends string>(self: Stream<A, E, R>(parameter) self: {
channel: Channel.Channel<Arr.NonEmptyReadonlyArray<A>, E, void, unknown, unknown, unknown, R>;
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; <…;
}
interface Stream<out A, out E = never, out R = never>A Stream<A, E, R> describes a program that can emit many A values, fail
with E, and require R.
Details
Streams are pull-based with backpressure and emit chunks to amortize effect
evaluation. They support monadic composition and error handling similar to
Effect, adapted for multiple values.
Example (Creating and consuming streams)
import { Console, Effect, Stream } from "effect"
const program = Effect.gen(function*() {
yield* Stream.make(1, 2, 3).pipe(
Stream.map((n) => n * 2),
Stream.runForEach((n) => Console.log(n))
)
})
Effect.runPromise(program)
// Output:
// 2
// 4
// 6
Stream<function (type parameter) A in <A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<{ [K in N]: A; }, E, R>A, function (type parameter) E in <A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<{ [K in N]: A; }, E, R>E, function (type parameter) R in <A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<{ [K in N]: A; }, E, R>R>, name: N extends stringname: function (type parameter) N in <A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<{ [K in N]: A; }, E, R>N): interface Stream<out A, out E = never, out R = never>A Stream<A, E, R> describes a program that can emit many A values, fail
with E, and require R.
Details
Streams are pull-based with backpressure and emit chunks to amortize effect
evaluation. They support monadic composition and error handling similar to
Effect, adapted for multiple values.
Example (Creating and consuming streams)
import { Console, Effect, Stream } from "effect"
const program = Effect.gen(function*() {
yield* Stream.make(1, 2, 3).pipe(
Stream.map((n) => n * 2),
Stream.runForEach((n) => Console.log(n))
)
})
Effect.runPromise(program)
// Output:
// 2
// 4
// 6
Stream<{ [function (type parameter) KK in function (type parameter) N in <A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<{ [K in N]: A; }, E, R>N]: function (type parameter) A in <A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<{ [K in N]: A; }, E, R>A }, function (type parameter) E in <A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<{ [K in N]: A; }, E, R>E, function (type parameter) R in <A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<{ [K in N]: A; }, E, R>R>
} = import dualdual(2, <function (type parameter) A in <A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<{ [K in N]: A; }, E, R>A, function (type parameter) E in <A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<{ [K in N]: A; }, E, R>E, function (type parameter) R in <A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<{ [K in N]: A; }, E, R>R, function (type parameter) N in <A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<{ [K in N]: A; }, E, R>N extends string>(
self: Stream<A, E, R>(parameter) self: {
channel: Channel.Channel<Arr.NonEmptyReadonlyArray<A>, E, void, unknown, unknown, unknown, R>;
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; <…;
}
interface Stream<out A, out E = never, out R = never>A Stream<A, E, R> describes a program that can emit many A values, fail
with E, and require R.
Details
Streams are pull-based with backpressure and emit chunks to amortize effect
evaluation. They support monadic composition and error handling similar to
Effect, adapted for multiple values.
Example (Creating and consuming streams)
import { Console, Effect, Stream } from "effect"
const program = Effect.gen(function*() {
yield* Stream.make(1, 2, 3).pipe(
Stream.map((n) => n * 2),
Stream.runForEach((n) => Console.log(n))
)
})
Effect.runPromise(program)
// Output:
// 2
// 4
// 6
Stream<function (type parameter) A in <A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<{ [K in N]: A; }, E, R>A, function (type parameter) E in <A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<{ [K in N]: A; }, E, R>E, function (type parameter) R in <A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<{ [K in N]: A; }, E, R>R>,
name: N extends stringname: function (type parameter) N in <A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<{ [K in N]: A; }, E, R>N
): interface Stream<out A, out E = never, out R = never>A Stream<A, E, R> describes a program that can emit many A values, fail
with E, and require R.
Details
Streams are pull-based with backpressure and emit chunks to amortize effect
evaluation. They support monadic composition and error handling similar to
Effect, adapted for multiple values.
Example (Creating and consuming streams)
import { Console, Effect, Stream } from "effect"
const program = Effect.gen(function*() {
yield* Stream.make(1, 2, 3).pipe(
Stream.map((n) => n * 2),
Stream.runForEach((n) => Console.log(n))
)
})
Effect.runPromise(program)
// Output:
// 2
// 4
// 6
Stream<{ [function (type parameter) KK in function (type parameter) N in <A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<{ [K in N]: A; }, E, R>N]: function (type parameter) A in <A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<{ [K in N]: A; }, E, R>A }, function (type parameter) E in <A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<{ [K in N]: A; }, E, R>E, function (type parameter) R in <A, E, R, N extends string>(self: Stream<A, E, R>, name: N): Stream<{ [K in N]: A; }, E, R>R> => const map: {
<A, B>(f: (a: A, i: number) => B): <E, R>(
self: Stream<A, E, R>
) => Stream<B, E, R>
<A, E, R, B>(
self: Stream<A, E, R>,
f: (a: A, i: number) => B
): Stream<B, E, R>
}
self: Stream<A, E, R>(parameter) self: {
channel: Channel.Channel<Arr.NonEmptyReadonlyArray<A>, E, void, unknown, unknown, unknown, R>;
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; <…;
}
a: Aa) => ({ [name: N extends stringname]: a: Aa } as any)))