How to display values from an array of objects within a given range with RamdaJS

Question

I am trying to create a function to filter an array of objects. I need to display all numbers between 2 numbers that I put in my search. I would like to use Ramda. Does anyone have any suggestions?

For example: I have following array of objects:

[{num: 120},{num: 110},{num: 115},{num: 5},{num: 35}]

I would like to display all numbers between 99 and 119. How can I do that with RamdaJS?

Answer 1

.filter is the function for this. For example:

const inputArray = [{num: 120},{num: 110},{num: 115},{num: 5},{num: 35}];
const min = 99;
const max = 119;
const outputArray = R.filter(val => val >= min && val <= max, inputArray);

If you're trying to have a factory for creating filter functions with different min and max values, that would look something like:

function makeFilter(min, max) {
  return R.filter(val => val >= min && val <= max);
}

// used like:
const filter = makeFilter(99, 119);
const outputArray = filter(inputArray);