New feature: findLast(int), findFirst(int), findRandom(int)

[crysan]

Hi!
Now we have.findAll () and.findFirst ().

And you can add?:
.findLast(10) - hoose the last 10 items
.findFirst(14) - choose the first 14 elements
.findRandom(42) - choose 42 random element

[cmelchior]

I could see use cases for both findLast(int) and findFirst(int), but to be honest I am not sure that adding findRandom(int) has enough use cases to warrant bloating the number of API methods.

Also the use cases for these methods might be covered by adding LIMIT #544, but it is worth a discussion.

[crysan]

LIMIT по сути тоже самое. Но зачем добавлять новый метод, когда можно модернизировать существующий?
findRandom в основном нужна при разработке приложения. Есть 10000 записей и при проектировании приложения (или даже самой)

[crysan]

Sorry.

LIMIT essentially the same. But why add a new method, when it is possible to upgrade the existing one?

findRandom mostly needed when developing an application. There are 10,000 entries, and the design of the application ( or even most of the base ), it is desirable to display a new kind of data.

[crysan]

There are changes?

[cirosomma]

Hi Crysan,
I've just joined on realm. I'm studying it and when I'll be able, I'll build it.

[crysan]

Thank you! I am waiting for the result.

[yolapop]

I think it would be useful to have findRandom. For example, I need to display item recommendations but I don't have the recommendation data yet, so it'd be nice to just show 5 random items at first.

[yograterol]

findRandom +1

[emanuelez]

Be aware that RealmResult is lazy and does not copy data to memory at any point.
That means that the proposed methods are very easily replaced with RealmResult.get() with no additional memory or performance cost.