Write Better GO Code: Composition

In Golang what is composition and how to use it to write better code?

[sidreddy]

This is so elegant. Can’t wait to see more go content in this channel

[katungiyassin]

Good work Mux. Which Vs code theme is close to what you're using

[norayrsargsyan]

Thank you so much for the content! What app do you use for code animations?

[ahmethatipoglu]

Nice video. I have a one nit here though to raise
in 100 go mistakes there is a section about embedding saying the following:

> What can we say about type embedding? First, let’s note that it’s rarely a necessity,
> and it means that whatever the use case, we can probably solve it as well without type embedding.
> Type embedding is mainly used for convenience: in most cases, to promote behaviors.

and then it also says

> Using type embedding consciously by keeping these constraints in mind can help avoid
> boilerplate code with additional forwarding methods. However, let’s make sure we don’t do it
> solely for cosmetics and not promote elements that should remain hidden

given the above, what would you do differently? (I still haven't decided which is better yet tbh)

Another question I have is I see you using `database.GetGuestFeatures()` which makes me believe you have a function `GetGuestFeatures()` under a `database` package. My question is how would you unit test HasFeature function here?

[nabinsaud]

Can you share the github code for this ?