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array-split

What does it do?

Splits an array into multiple arrays using a predicate function. returns an object containing the results keyed based on the return value of the predicate function.

How do I use it?

Example: Separate odd and even numbers

const split = require('array-split');

const numbers = [1, 2, 3, 4, 5, 6, 7, 8, 9];

const result = split(numbers, (num) => {
  if (num % 2 === 0) return 'even';
  return 'odd';
});

This will return...

{
  even: [2, 4, 6, 8],
  odd: [1, 3, 5, 7, 9]
}

Anything else?

The predicate function only supports returning types... null, undefined, string or number

  • If you return null or undefined the value is dropped from the result set.
  • If you return a string or a number, it is keyed in the results object (numbers are converted to strings)

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split an array into multiple arrays using a predicate, with results keyed within an object

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