使用标题破坏 [英] Destruct using titles

问题描述

我已经使用销毁回答了一些问题，我只想将其带入一个新的水平

I have answered a few questions using destructing, I just want to take this one to the next level

在此示例中，我不想使用reduce而是纯粹的销毁

I want to not use reduce in this example but pure destructing if at all possible

所以数据的第一行包含对象的属性名称，我该如何使用它作为DRY

So the data's first row contains the attribute names of the object, How can I use that to be DRY

ie我希望

const obj = data.slice(1).map((titles) => ({ titles }) )

或类似的

所以这可行，但我又错过了一步：

So this works, but I miss one more step:

const data = [
    ["fruits","frozen","fresh","rotten"],
    ["apples",884,494,494],
    ["oranges",4848,494,4949],
    ["kiwi",848,33,33]
]
const titles = data[0]; // not used below but I want to use it
const obj = data.slice(1).map(([fruits,frozen,fresh,rotten]) => ({ fruits,frozen,fresh,rotten }) )
console.log(obj)

推荐答案

您可以映射对象的条目。

You could map the entries for an object.

const
    data = [["fruits", "frozen", "fresh", "rotten"], ["apples", 884, 494, 494], ["oranges", 4848, 494, 4949], ["kiwi", 848, 33, 33]],
    mapWith = keys => values => Object.fromEntries(keys.map((k, i) => [k, values[i]])),
    getArray = ([keys, ...data]) => data.map(mapWith(keys)),
    array = getArray(data);

console.log(array);

.as-console-wrapper { max-height: 100% !important; top: 0; }

较简单的示例

const data = [
  ["fruits", "frozen", "fresh", "rotten"],
  ["apples", 884, 494, 494],
  ["oranges", 4848, 494, 4949],
  ["kiwi", 848, 33, 33]
]
const titles = data[0];

const obj = data.slice(1).map(
  arr => Object.fromEntries(
    titles.map( 
      (t, i) => [t, arr[i]] 
    )
  )
);

console.log(obj);

.as-console-wrapper { max-height: 100% !important; top: 0; }

这篇关于使用标题破坏的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！