effect-io-ai

Package: effect
Module: Tuple

Tuple.evolve

Transforms elements of a tuple by providing an array of transform functions. Each function applies to the element at the same position. Positions beyond the array’s length are copied unchanged.

When to use

Use when you want to update the first N elements while keeping the rest.

Details

Each transform function receives the current value and can return a different type.

Example (Transforming selected elements)

import { pipe, Tuple } from "effect"

const result = pipe(
  Tuple.make("hello", 42, true),
  Tuple.evolve([
    (s) => s.toUpperCase(),
    (n) => n * 2
  ])
)
console.log(result) // ["HELLO", 84, true]

See

• map – apply the same transformation to all elements
• renameIndices – swap element positions

Signature

declare const evolve: { <const T extends ReadonlyArray<unknown>, const E extends Evolver<T>>(evolver: E): (self: T) => Evolved<T, E>; <const T extends ReadonlyArray<unknown>, const E extends Evolver<T>>(self: T, evolver: E): Evolved<T, E>; }

Source

Since v4.0.0