effect-io-ai

Package: effect
Module: Struct

Struct.Apply

Applies a Lambda type-level function to a value type V, producing the output type.

When to use

Use when you need to compute what type a Lambda would produce for a given input.

Details

This works by intersecting the Lambda with { "~lambda.in": V } and reading "~lambda.out".

Example (Computing the output type of a lambda)

import type { Struct } from "effect"

interface ToString extends Struct.Lambda {
  readonly "~lambda.out": string
}

// Result is `string`
type Result = Struct.Apply<ToString, number>

See

• Lambda – the base interface

Signature

type Apply<L, V> = (L & { readonly "~lambda.in": V })["~lambda.out"]

Source

Since v4.0.0