# Tips / Tip of the day / Today I Learned category

**URL:** https://racket.discourse.group/t/tips-tip-of-the-day-today-i-learned-category/937
**Category:** Site Feedback
**Created:** [April 29, 2022, 5:23pm UTC](https://racket.discourse.group/t/tips-tip-of-the-day-today-i-learned-category/937 "2022-04-29T17:23:02Z")
**Posts on this page:** 1
**Showing post:** 4

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### Author: ![alexh](https://yyz2.discourse-cdn.com/free1/user_avatar/racket.discourse.group/alexh/32/315_2.png) [@alexh](https://racket.discourse.group/u/alexh)
#### Post date: [April 30, 2022, 1:58am UTC](https://racket.discourse.group/t/tips-tip-of-the-day-today-i-learned-category/937/4 "2022-04-30T01:58:06Z")

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There would have been even more to learn if the TIL was rephrased as a question, and we already have a "Questions" category.

For example:

> I noticed that `s-exp->fasl` can be much faster when writing the data through a port instead of obtaining the FASL value and writing it to disk separately. Why is this the case?

So, does anyone here know why this is faster? 🙂

Alex.

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