pluck() function

返回通过从提供的 Iterable/AsyncIterable 中所有对象提取同名属性得到的 Iterable/AsyncIterable。

Signature:

declare function pluck<O extends object, K extends keyof O>(
  key: K,
  iterable: Iterable<O>,
): IterableIterator<O[K]>;

Example

const iter = pluck("age", [{ age: 21 }, { age: 22 }, { age: 23 }]);
iter.next(); // {done:false, value: 21}
iter.next(); // {done:false, value: 22}
iter.next(); // {done:false, value: 23}

// with pipe
pipe([{ age: 21 }, { age: 22 }, { age: 23 }], pluck("age"), toArray); // [21, 22 ,23]

// if you want to use asynchronous callback
await pipe(
  Promise.resolve([{ age: 21 }, { age: 22 }, { age: 23 }]),
  toAsync,
  pluck("age"),
  toArray,
); // [21, 22 ,23]

// with toAsync
await pipe(
  [
    Promise.resolve({ age: 21 }),
    Promise.resolve({ age: 22 }),
    Promise.resolve({ age: 23 }),
  ],
  toAsync,
  pluck("age"),
  toArray,
); // [21, 22 ,23]

see pipe, toAsync, toArray

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