transform object to object array with ramdajs

Question

I am writing a program, counting words in a file.

Suppose the object likes this:

{
  I: 2,
  it: 4,
  that: 1
}

And I wanna make it:

[
  { word: 'I', count: 2 }, 
  { word: 'it', count: 4 }, 
  { word: 'that', count: 1 }
]

I can achieve the goal by using imperative programming: loop the object...

And I check out the docs and google, but can't find any method fit in :(

Thanks

davidchambers · Accepted Answer · 2015-12-01 17:26:46Z

3

This can be achieved using R.toPairs and R.zipObj:

//    convert :: {a} -> [{ word :: String, count :: a }]
const convert = R.compose(R.map(R.zipObj(['word', 'count'])), R.toPairs);

convert({I: 2, it: 4, that: 1});
// => [{"count": 2, "word": "I"}, {"count": 4, "word": "it"}, {"count": 1, "word": "that"}]

answered Dec 1, 2015 at 17:26

davidchambers

25.1k18 gold badges81 silver badges110 bronze badges

Sign up to request clarification or add additional context in comments.

2 Comments

1da Over a year ago

cool~ BTW, how should I learn ramdajs? I can't find any resources except the official site, and I can't always ask the questions in here.

davidchambers Over a year ago

The Gitter room is quite active, and the people there are very helpful. Also, Brian Lonsdorf has created many wonderful resources for learning about functional programming in JavaScript. Have a look for his various tutorials, talks, and screencasts.

Collectives™ on Stack Overflow

transform object to object array with ramdajs

1 Answer 1

2 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

2 Comments

Your Answer

Sign up or log in

Post as a guest

Related