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Graph/be028425-c325-4903-bf31-52f736248689

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Streams

be028425-c325-4903-bf31-52f736248689

Streams

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Updated5/1/2026

PageRank0.0000

Effectiveness0.000

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22 linked nodes

PERTAIN_TOProblem

All of the put/upload functions want a set content length. Tension: Building the zip locally is not an option, because the end size of the zip can be tens of GB. Outcome: I essentially need a zip "placeholder" on S3 that I can stream to.

PERTAIN_TOProblem

java.lang.IllegalStateException: Duplicate key a (attempted merging values 1 and 1) — I'm trying to convert a list of objects to a `Map` using Java Streams. Tension: I expected it to just create a map with unique keys, but I forgot that my list has duplicates.

PERTAIN_TOSolution

You can use `Collectors.collectingAndThen`, but then you need to keep a list of the grouped values so you can access the nail index later — Collectors.collectingAndThen. Tension: you need to keep a list of the grouped values so you can access the nail index later.

PERTAIN_TORootCause

if the type is age then I need to compare age with emp.age — Employee has attribute Name, Age, dept, City. Tension: mixed types (age is numeric and the rest are string. Outcome: So when you specify your Criteria you need to put age in as a string.

PERTAIN_TOProblem

The List of Criteria can be dynamic as it can contain 1 or more criteria's. — I want to filter Employee List based on this dynamic List of Criteria. Tension: if the type is age then I need to compare age with emp.age and if type is city then i need to compare with emp.city.

PERTAIN_TOSolution

I used a switch to accumulate a `boolean` result for the filter. Tension: What makes this difficult is that you are handling mixed types. Outcome: I convert it to int when filtering.

PERTAIN_TOAnswer

PERTAIN_TOProblem

Java Stream pipeline creates a list where a property's value should be null when it matches the previous item

PERTAIN_TOSolution

Use an explicit loop or IntStream over the filtered list, keep track of previous and current elements, and create a new SystemAuditHelper when values change

PERTAIN_TOAnswer

PERTAIN_TOAnswer

PERTAIN_TOProblem

I want to avoid the "a -> ..." — I would like to do the following with Java stream. Tension: But it breaks, the expression of code as a series of transformations. Outcome: I do not found a way to compose functions in stream.

PERTAIN_TOSolution

You can create it yourself — Stream.of(X.builder().build()) .filter(combine(X::getS, String::isBlank)). Tension: If you restricted by using pure JDK try this:. Outcome: Stream.of( X.builder().build() ).filter(Function .identity() .andThen(X::getS) .andThen(Object::toString) .andThen(String::isBlank) ::apply ).toList();.

PERTAIN_TOAnswer

PERTAIN_TORootCause

I do not believe it is possible to retrieve data at "another point of the stream". — myAs.stream() .map(A::getS) .filter(A::aFilter) .map("back to stream of A").

PERTAIN_TOSolution

Add a method to A: — I would like to do the following with Java stream:.

PERTAIN_TOAnswer

PERTAIN_TOProblem

the streaming zipfly implementation broke. Tension: I needed to implement WebSockets and had to make Django run asynchronously in ASGI.

PERTAIN_TOSolution

adding a final "flush" and using an own buffer implementation — I had the same issue. Outcome: it working by modified your implementation.

PERTAIN_TOAnswer

PERTAIN_TOSolution

served by Uvicorn (Daphne also worked). Tension: The solution would be too large to write here.

PERTAIN_TOAnswer

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