Comment by Alec on Querying a large dataset in-browser using webassembly
Although I'm aware this is unsatisfying, I think there's really not much point to doing this. From WASM in the browser, the only way you are going to interact with files is by importing browser...
View ArticleComment by Alec on Concatinating two Flows in Akka stream
source.via(flow1).concat(source.via(flow2)). Note that you are re-running source twice though.
View ArticleComment by Alec on Force tableswitch instead of lookupswitch
@apangin I agree it does not matter for performance, but Java's way is actually the "smaller" bytecode. This is counterintuitive because of the way javap prints out the switch, but tableswitch...
View ArticleComment by Alec on How to compare types of different, generic HLists?
I fear I'm missing something - did you try adding an implicit ser: Serializer[ ReprA, ReprB] argument to def toSerializedKeys? In fact, why can't Serializer.toBufs be the function presented to users?
View ArticleComment by Alec on Regular expression to find URLs within a string
@TrophyGeek I think you just copied the regex from the first comment, and Akshay forgot to include the &. The right version would be: val urlRegex =...
View ArticleComment by Alec on When should I use ConcurrentSkipListMap?
It feels a little bit weird to benchmark the performance of a datastructure meant for concurrent access only single threaded. This would be more interesting with more threads (even just -tc 1,2,4,8 to...
View ArticleComment by Alec on What is the simplest way to pipe from a Read to a Write
@infogulch because read methods from Read and write methods from Write both require &mut self. As for the why behind that, I'd say it is safe to say that most implementations of read and write will...
View ArticleComment by Alec on Fastest way to invoke method handle fields
I definitely could use invokedynamic with a this argument and a getter bootstrap argument, but I buy that I won't get anything more out of it than invokeExact.
View ArticleUses of `final object`? [duplicate]
Is there any purpose for a final object? None of the other uses of final seem to make any sense here:preventing a type from being extended (as in final class) doesn't make sense since object's can't be...
View ArticleFactoring a number into roughly equal factors
I would like to decompose a number into a tuple of numbers as close to each other in size as possible, whose product is the initial number. The inputs are the number n we want to factor and the number...
View ArticleChoose a BidiFlow based on the first input element
I have a protocol which has type protocol: Flow[ByteString, ByteString, NotUsed]. Elements coming into the stream are messages sent by the user and elements exiting the stream are responses from the...
View ArticleAnswer by Alec for Choose a BidiFlow based on the first input element
After posting and looking more at the docs, I've figured out a semi-solution: since the BidiFlow is anyways ultimately going to be join-ed to a Flow, we can just think of the problem in terms of...
View ArticleAnswer by Alec for Scala and Akka HTTP: Processing form-data requests
If all you want are the string values in the form data, you just need to unmarshal to StrictForm, and then unmarshal each of the field values as strings.Here's a proof of concept Ammonite script that...
View ArticleAnswer by Alec for akka http: Server Binding not behaving as expected
As the snippet tells, I am terminating the server binding after 10 seconds. So I expect that if I send the request before this period expires, I should get message 'Accepted incoming connection...
View ArticleAnswer by Alec for passing an Akka stream to an upstream service to populate
The real issue here is that the Azure API is not designed for back-pressuring. There is no way for the output stream to signal back to Azure that it is not ready for more data. To put it another way:...
View ArticleAnswer by Alec for How to build an Akka Streams Source from the Akka Event...
This seems like an XY problem. If the publisher and subscriber end up de-coupled, what should happen if the publisher produces data faster than the subscriber?With that said, here's a way to do what...
View ArticleAnswer by Alec for Recover on Akka ask based on the message sent
Akka's ask method is actually pretty easy to recreate - it is just a mapAsync with some extra logic for better errors when the actor dies (see the code). As such, just use mapAsync manually so you can...
View ArticleAnswer by Alec for Where do enqueued messages go after an actor is stopped Akka
In general, you can't assume much about delivery to dead letters. As the docs on dead letters say:Messages which cannot be delivered (and for which this can be ascertained) will be delivered to a...
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