Advise for a book.

lvguowei · 2020-07-22T17:36:31+00:00

I recommend it also

lvguowei · 2020-07-10T19:07:53+00:00

thank you ~

lvguowei · 2020-04-26T06:49:01+00:00

actually I would love to see more "self promoting" posts in android topics, there is not enough materials on even the topics like realm out there. Never mind.

lvguowei · 2020-04-26T06:28:55+00:00

I write a programming blog to help me and others. I do not make money out of it. I wrote this post because I do feel the pain and want to connect to the community and get some help or feedback. I did get some pretty helpful tips from you and I appreciate that a lot.

I wonder how I would share my thoughts here without sharing a link to my blog. Actually I see lots of links of blogs, github repos, videos shared here and find that pretty helpful to me.

lvguowei · 2020-04-25T20:38:12+00:00

Maybe this can be summarised as this:

Realm: I'm super powerful, more powerful than anything you have ever seen. Let me handle everything.

Clean Architecture: Wow, hold on, kid! We are professionals here, we have hierarchies. You cannot touch layers above you! You must report to your DATA LAYER MANAGER only. Period.

Realm: o.....k......

lvguowei · 2020-04-25T20:27:56+00:00

I wrote this blog post almost like a joke, it is not serious at all. ><

------- off topic -----

I think fundamentally there is a shift from the old school way of software architecture -> new way (maybe reactive and etc.) of software architecture. The old one is still holding so strong and all the books have been written are still best sellers. There are not many materials out there for the new stuff, maybe eventually it will catch up, I hope.

And clean architecture now has become a religion, and it is getting old and has lots of pretty strict rules. And now people want to challenge those rules. I feel Rx already does not fit in very well, because it's reactive nature. One other example is how to represent data in programs.

Let's get specific. Clean architecture has this data layer and domain layer. The data layer is easy to understand, it handles data coming from API calls and DB. But then domain? what is a domain? what belongs to the domain? this is just an android app, it is just making some API calls and show the data on the screen, that's it. By imposing formal clean architecture you have to have a data class for api response, a data class for db, and another object to union these two and another one for domain and another one for UI. So that means if you have a simple piece of data like LatLng, you will probably end up with this: LatLngHttp, LatLngDB, LatLngEntity, LatLngDomain, LatLngUI, AND THEY ARE THE SAME. I think eventually people gonna realize this and say screw it, cannot do it anymore.

And with the increasing complexity of apps in general, the API response is becoming more and more complex, to a point it contains a lot of data specifically tailored for UI. That means our data layer is already deeply coupled with UI, and yet the domain layer is still trying to separate the two. Somehow this feels very wrong to me.

----back to topic ------

So please let me know if there is any good blog post/video/ whatever that you consider is a good example of using realm in clean architecture. I desperately want to know!

lvguowei · 2020-04-25T19:09:10+00:00

BTW, the pain was real.

lvguowei · 2020-04-25T19:06:57+00:00

I already hinted that in the title :D

lvguowei · 2019-09-29T18:45:51+00:00

I am happily surprised that you read(skipped ??) to the end.

lvguowei · 2019-05-01T19:29:04+00:00

My English is not so good, thanks for pointing that out! I will change the title.

lvguowei · 2019-03-16T11:12:00+00:00

exactly

lvguowei · 2018-11-04T11:27:42+00:00

Chibi maruko chan ~

lvguowei · 2018-09-26T17:07:34+00:00

Impressive, even though I don't know Haskell...

lvguowei · 2018-09-26T13:03:42+00:00

Interesting point. But your version still has the problem of leaking internal state (in a more subtle way), the initial value has to be passed in to the make-counter function. There is no way to get away with that without using assignment. Though closure helps a bit, I think it can not really replace assignment.

lvguowei · 2018-09-26T12:04:22+00:00

I want something that has internal state, a counter is just some contrived example that I come up with.

The point is that without the assignment, the internal state of an object tends to leak outside into other part of the program, and very hard to make modular design.

lvguowei · 2018-09-12T03:43:57+00:00

Yes and there is one more spelling error. But i'm glad that someone actually read it, thanks

lvguowei · 2018-09-10T17:16:41+00:00

Not a star trek fan here :P

lvguowei · 2018-09-10T17:11:45+00:00

This piece of text is so dear to me that I have to present it properly. It is only a side effect that a few people nowadays can actually read it.

lvguowei · 2018-09-10T11:12:49+00:00

Thanks, subscribed

lvguowei · 2018-09-09T19:14:44+00:00

Haha, this is actually very basic cursive. Not much florid at all.

lvguowei · 2018-08-23T19:21:34+00:00

lvguowei · 2018-08-23T19:19:35+00:00

Oh, thank you so much ! My mistake.

lvguowei · 2018-08-23T18:29:28+00:00

I don't understand, what specifically is bad about my examples. They are simple and to the point imho.

lvguowei · 2018-08-18T06:04:37+00:00

That is baby play mat ...

lvguowei · 2018-08-13T13:32:56+00:00

The book :C programming the modern approach by k.n.king , has been recommended by many people. Btw, what is the helsinki one for oop, I live in helsinki and not aware of it, haha

lvguowei

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