Ramda.js 如何使用挖掘对象进行采摘

Question

I want to make an array which have items of id.

Here is my code.

 const list = [ { meta: { id: 0 } }, { meta: { id: 1 } } ] const result = R.pluck('id')(R.pluck('meta')(list)) // → [0, 1] console.log(result);

 <script src="https://cdnjs.cloudflare.com/ajax/libs/ramda/0.26.1/ramda.min.js"></script>

I am doing pluck twice and I think this is not cool.

Any coolest way to do this?

I want to use Ramda.js.

Answer 1

Word around town is that this is pretty cool:

 const list = [ { meta: { id: 0 } }, { meta: { id: 1 } } ] const result = R.map(R.path(['meta', 'id']))(list); console.log(result);

 <script src="https://cdnjs.cloudflare.com/ajax/libs/ramda/0.26.1/ramda.min.js"></script>