Common mistakes made in Functional Java by Brian Vermeer

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Common mistakes made in Functional Java by Brian Vermeer

Рет қаралды 17,594

Devoxx

Күн бұрын

Пікірлер: 20

@shriramparamesh 4 жыл бұрын

4:07 - Doing too much in a single lambda. 7:19 - Returning a stream in a method. Reusing a stream. 11:09 - Forgetting to consume a stream 14:40 - Mutate objects inside a stream. 20:24 - Overusing forEach 24:08 - Order of operations 30:31 - 'Get'ting an Optional. 37:29 - Checked Exceptions and Lambda

@johnsand3290 5 жыл бұрын

nice talk, I liked the part about exception handling. Could you upload the sourcecode of your Either implementation?

@nitinagrawal6637 4 жыл бұрын

A good presentation giving a set of suggestions to do sensible coding.

@romantsyupryk3009 4 жыл бұрын

Thanks so much for this talk.

@gautamawekar1 5 жыл бұрын

Nice talk..to the point. Liked the Optionals & Stream exception handling. I wonder why can't java inherently support some utils to support these limitations.

@berndeckenfels 4 жыл бұрын

It does kind of with reactive streams, now. They have an error channel.

@nitinagrawal6637 3 жыл бұрын

Asking a question should not change the answer, nor should asking it twice - I think it depends on the context of the question, depends on the type of question. So before applying any such concept one must understand it first.

@MikeEnRegalia 2 жыл бұрын

I take issue with #2. In a use case where most clients calling a method that returns a collection will create a stream from it, it is more efficient to just return a stream directly. Callers who need to iterate twice can call the method twice. Callers who need a data structure can convert the stream easily, using concise code.

@m19u3l11 6 ай бұрын

In any case, Stream is NOT a collection so if's going to be used in that way expected unexpected results.

@noname78520 Жыл бұрын

awesome talk!

@tungtranvan1286 3 жыл бұрын

I saw myself in your example. Thank you :D

@kokavamsikrishna3933 5 жыл бұрын

Greate , Awesome thanks for making this video,

@vijayjayaram606 3 жыл бұрын

There is a reason why he referred to Venkat 🙏🏼 at the beginning Venkat owns java streams and lambda 🤘

@temnur 5 жыл бұрын

Good for beginners

@jfilipcic Жыл бұрын

I don't understand why the 0,1... iterator gets stuck when run in parrallel. Could please anybody explain it like I'm five?

@mihaiapostol7864 Жыл бұрын

i think because the results of the threads are joined right before the terminal operation, but we never get to the terminal operation because of the distinct(). try using a peek() after each stream operation to see what's happening. it confused me as well

@pnadmin7927 5 жыл бұрын

So Venkat always say we should use Reactive stream. LOL

@ebn__ 5 жыл бұрын

Using Java for FP is the common mistake.

@alekseyreviakin3019 5 жыл бұрын

I watched this video and video about near Java future: kzfaq.info/get/bejne/ntiphKx6xtmriWg.html and thought: "Look Java is almost like Scala now". Maybe Java need own way?