September 18th, 2020: What did you learn this week?

Nick Taylor - Sep 18 '20 - - Dev Community

It's that time of the week again. So wonderful devs, what did you learn this week? It could be programming tips, career advice etc.

![Two hockey players reading a play book](https://media.giphy.com/media/OqJdvB5VyUUqNoZdjO/giphy-downsized-large.gif)

Feel free to comment with what you learnt and/or reference your TIL post to give it some more exposure.

#todayilearned

Summarize a concept that is new to you.
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