reduceRight wrong example? #78

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1. QWp6t commented on Nov 12, 2018

   

   QWp6t

   on Nov 12, 2018

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   They're using different demo functions, and their return values are consistent with those functions. Returning the sum is just a common example use case for [].reduce.

   [].reduce starts at the beginning of the array and works its way to the end. [].reduceRight starts at the end and works its way to the beginning. I think the example for [].reduceRight used in the pen might be mildly confusing for those still learning since it reduces nested arrays. Here's an example of both using the same function; note how the output differs:

   ['a', 'b', 'c', 'd'].reduce((current, carry) => current+carry); // ➡ abcd
   ['a', 'b', 'c', 'd'].reduceRight((current, carry) => current+carry); // ➡ dcba

   👍React with 👍1Reacted by Sarah Drasner
2. sdras commented on Nov 13, 2018

   

   sdras

   on Nov 13, 2018

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   Yeah @QWp6t you're right, I should make that a little more clear and easy to understand for beginners, since that's who this resource is for.
3. sdras

   added

   good first issue

   open to PR

   on Jul 13, 2019
4. rimildeyjsr commented on Oct 2, 2019

   

   rimildeyjsr

   on Oct 2, 2019

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   @sdras - hello! Can I work on this issue? 🙂