You can pretty much look at the Java8 streams source (from OpenJDK) and port it
to Go. It would need to use interface{} or reflect - the former probably being
faster, but both wouldn’t have the type safety - but I think the code would
translate pretty easily. Still with IntStream, etc. you could get some of the
the type safety back.
https://docs.oracle.com/javase/8/docs/api/java/util/stream/Stream.html
> On Nov 12, 2018, at 5:51 PM, Bakul Shah <[email protected]> wrote:
>
>
>
>> On Nov 12, 2018, at 9:53 AM, [email protected] wrote:
>>
>> Hey Bakul again,
>>
>> I've been having a look at kona, and the project looks so good, I will look
>> in deep trying to get some good ideas as you recommend me,
>
> Let me know (off-list) if you need help in deciphering things in kona.
>
>> In regards to the code generation, I've never done to be honest, but
>> obviously the performance should be better. By the way, @Marko_Ristin
>> created an issue asking for some performance testing. I think I will face
>> this issue before considering code generation. But in case of the
>> performance wasn't good at all, for sure that I consider your suggestion
>> about generate the code
>
> Yes, this may not simple....
>
>> And, what you mean when say "arbitrary streams (e.g. something built on top
>> of channels)?" Sorry for my bad understanding, Thanks in advance
>
> To me a "stream" can be arbitrarily long and may grow while you are
> operating on it. For example C's stdin, stdout etc. That means you
> can't always operate on a "whole" string all at once as you can
> with arrays. But many of the functions that operate on arrays are
> useful with real streams. For example, a service may be generating
> a stream of request log records. You may want to analyze these logs
> for a given time period and may be create a graph. E.g. you may
> have a pipeline like
>
> MakeStream(requestLogStream).
> StartAt(date1).
> EndBy(date2).
> GroupBy(requestorIP).
> Each(Count).
> ...
>
> Here GroupBy may generate a stream of streams. Note: I am just
> sketching the idea; there are many holes here.
>
> The idea is you can slice and dice these streams in various ways
> to make sense of your data. Basically you are building unix like
> pipelines but they are typed and you are not constrained by shell
> syntax.
>
> This will be non-trivial but can be a very useful package.
>
>
>>
>> El lunes, 12 de noviembre de 2018, 12:17:12 (UTC+1), Bakul Shah escribió:
>> On Nov 11, 2018, at 11:27 AM, Iván Corrales Solera <[email protected]>
>> wrote:
>>>
>>> Hey guys, last weeks I've been working on Koazee and I just released a very
>>> first version Titi, v0.0.1 .
>>>
>>> Koazee is a golang library inspired in Lazy evaluation and functional
>>> programming that provides us a rich set of operations that can be done over
>>> arrays. If you like the clean code and the functional programming I am
>>> sure you enjoy it!
>>>
>>>
>>> Documentation is hosted http://wesovilabs.com/koazee/
>>>
>>> And the full code can be found on Github,
>>> https://github.com/wesovilabs/koazee
>>>
>>> Any feedback or recommendation will be appreciated!
>>
>> Very nice! I like the clean interface.
>>
>> Some comments:
>>
>> - Can this handle arbitrary streams (e.g. something built on top of
>> channels)?
>> That would make a nice extension!
>> - You may wish to look at k3 (open source version @
>> https://github.com/kevinlawler/kona)
>> In particular https://github.com/kevinlawler/kona/wiki#verbs
>> There are some additional functions (verbs) and higher order functions
>> (adverbs)
>> that may be of interest and will fit in nicely within your framework.
>> PDFs of K 2.0 User and Reference manuals (listed under links) have much
>> more detail.
>> - May be you can provide another interface that *generates* Go code instead
>> of
>> executing it! If it can be made to generate more efficient code, devoid of
>> reflect.
>>
>>
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