<A>(self: TxChunk<A>): Effect.Effect<number>Gets the size of the TxChunk.
Example (Getting the size)
import { Effect, TxChunk } from "effect"
const program = Effect.gen(function*() {
const txChunk = yield* TxChunk.fromIterable([1, 2, 3, 4, 5])
// Get the current size - automatically transactional
const currentSize = yield* TxChunk.size(txChunk)
console.log(currentSize) // 5
// Size is tracked for conflict detection
yield* TxChunk.append(txChunk, 6)
const newSize = yield* TxChunk.size(txChunk)
console.log(newSize) // 6
})export const const size: <A>(
self: TxChunk<A>
) => Effect.Effect<number>
Gets the size of the TxChunk.
Example (Getting the size)
import { Effect, TxChunk } from "effect"
const program = Effect.gen(function*() {
const txChunk = yield* TxChunk.fromIterable([1, 2, 3, 4, 5])
// Get the current size - automatically transactional
const currentSize = yield* TxChunk.size(txChunk)
console.log(currentSize) // 5
// Size is tracked for conflict detection
yield* TxChunk.append(txChunk, 6)
const newSize = yield* TxChunk.size(txChunk)
console.log(newSize) // 6
})
size = <function (type parameter) A in <A>(self: TxChunk<A>): Effect.Effect<number>A>(self: TxChunk<A>(parameter) self: {
ref: TxRef.TxRef<Chunk.Chunk<A>>;
toString: () => string;
toJSON: () => unknown;
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 TxChunk<in out A>TxChunk is a transactional chunk data structure that provides Software Transactional Memory (STM)
semantics for chunk operations.
Details
Accessed values are tracked by the transaction in order to detect conflicts and to track changes.
A transaction will retry whenever a conflict is detected or whenever the transaction explicitly
calls Effect.txRetry and any of the accessed TxChunk values change.
Example (Using a transactional chunk)
import { Chunk, Effect, TxChunk } from "effect"
const program = Effect.gen(function*() {
// Create a transactional chunk
const txChunk: TxChunk.TxChunk<number> = yield* TxChunk.fromIterable([
1,
2,
3
])
// Single operations - no explicit transaction needed
yield* TxChunk.append(txChunk, 4)
const result = yield* TxChunk.get(txChunk)
console.log(Chunk.toReadonlyArray(result)) // [1, 2, 3, 4]
// Multi-step atomic operation - use explicit transaction
yield* Effect.tx(
Effect.gen(function*() {
yield* TxChunk.prepend(txChunk, 0)
yield* TxChunk.append(txChunk, 5)
})
)
const finalResult = yield* TxChunk.get(txChunk)
console.log(Chunk.toReadonlyArray(finalResult)) // [0, 1, 2, 3, 4, 5]
})
TxChunk<function (type parameter) A in <A>(self: TxChunk<A>): Effect.Effect<number>A>): import EffectEffect.interface Effect<out A, out E = never, out R = never>The Effect interface defines a value that lazily describes a workflow or
job. The workflow requires some context R, and may fail with an error of
type E, or succeed with a value of type A.
When to use
Use when you need to represent a lazy, composable workflow that can require
services, fail with a typed error, or succeed with a typed value.
Details
Effect values model resourceful interaction with the outside world,
including synchronous, asynchronous, concurrent, and parallel interaction.
They use a fiber-based concurrency model, with built-in support for
scheduling, fine-grained interruption, structured concurrency, and high
scalability.
To run an Effect value, you need a Runtime, which is a type that is
capable of executing Effect values.
Effect<number> =>
const modify: {
<A, R>(
f: (
current: Chunk.Chunk<NoInfer<A>>
) => [
returnValue: R,
newValue: Chunk.Chunk<A>
]
): (self: TxChunk<A>) => Effect.Effect<R>
<A, R>(
self: TxChunk<A>,
f: (
current: Chunk.Chunk<A>
) => [
returnValue: R,
newValue: Chunk.Chunk<A>
]
): Effect.Effect<R>
}
self: TxChunk<A>(parameter) self: {
ref: TxRef.TxRef<Chunk.Chunk<A>>;
toString: () => string;
toJSON: () => unknown;
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; <…;
}
current: Chunk.Chunk<A>(parameter) current: {
length: number;
right: Chunk<A>;
left: Chunk<A>;
backing: Backing<A>;
depth: number;
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 ChunkChunk.const size: <A>(self: Chunk<A>) => numberRetrieves the size of the chunk.
Example (Getting chunk size)
import { Chunk } from "effect"
const chunk = Chunk.make(1, 2, 3)
console.log(Chunk.size(chunk)) // 3
size(current: Chunk.Chunk<A>(parameter) current: {
length: number;
right: Chunk<A>;
left: Chunk<A>;
backing: Backing<A>;
depth: number;
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;
}
current: Chunk.Chunk<A>(parameter) current: {
length: number;
right: Chunk<A>;
left: Chunk<A>;
backing: Backing<A>;
depth: number;
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;
}