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

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.

Top comments (5)

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Kostia Palchyk • Edited

I learned more about Proxies and TypeScript helpers to develop and properly type this:

Proxy get, set, apply, TS' infer, keyof, ReturnType<Type>, etc — it's MAGIC!

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peter279k

I develop my hacking scripts and use existed penetration tools to do penetration testing for some websites/services in Taiwan.

And submitting the security issues to the HITCON Zero DAy, a bug exploit submitting service.

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Nick Taylor

Awesome!

Hackerman from Kung Fury putting on a Nintendo Power glove

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Jason F

I learned that it's possible to retrieve data and update it in one SQL query. Also learned a little bit more about mocking in unit tests. Oh, and I made my first nuget package.

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Nick Taylor

Captain America saluting