Questions tagged [stream]
A stream is a series of data elements (characters, bytes or complex packets) which can be accessed or made accessible in a serial fashion. Random access is not possible.
246
questions
6
votes
2answers
94 views
Printing the max of groups of three random ints
I'm trying to teach myself streaming and lambda expressions. Here's the scenario: I have a collection of 10 Thing objects each containing an int[] of 3 random number. I've written code to print out ...
1
vote
1answer
47 views
Is there better alternative to making an optional set of elements from iterable in java?
I'm feeling uneasy with this service method that I wrote:
...
9
votes
5answers
214 views
Stream text scanning
I've written some utilities to read text from streams. One of these, the ReadTo method, is to read text from a specified stream until a given text is encountered, ...
5
votes
1answer
41 views
Stack Exchange graph data - helper modules
Building on previous reviews
Whilst not an iterative review I have tried to follow the advice provided to some of my older questions:
KISS, in some of my previous questions I've over complicated the ...
4
votes
1answer
54 views
Reading from a stream but reserving N bytes at the end of stream
What I'd like to do is read data from a stream (like ifstream::read), but reserve N = 4 bytes from being returned. The last 4 bytes of the stream are not part of the data itself, but are metadata.
In ...
3
votes
1answer
112 views
Group a list of strings by length
Is it possible to write this using the stream element? I can get the most of it with stream but it is the add adding string to list which is in the map that I am caught on.
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2
votes
0answers
34 views
Middleware for authenticating GitHub webhooks
I'm currently working on a PSR-15 middleware for authenticating GitHub webhooks.
...
1
vote
0answers
26 views
Encrypted network protocol in NodeJS
This is just an exercise. I know I should not implement encryption protocol myself. I know I should use Node's TLS package. I know I do not authenticate other side, but merely encrypting traffic.
I ...
3
votes
3answers
137 views
A stream version of Fizz Buzz
I'm trying to learn streams and hashmaps, in doing so I want to make a very scalable, very clean version of FizzBuzz while adhering to the book Clean Code by Robert Cecil Martin.
...
3
votes
0answers
60 views
Reading and parsing binary file from CAEN Digitizer (written by WaveDump)
Preliminaries
I have CAEN Digitizer N6720A and use WaveDump software for the data acquisition and recording.
As a result of data recording this software produces a binary file in which the sequence ...
4
votes
0answers
65 views
C++ network stream
So, I'm new to socket programming. I wanted to get started learning, and start making stuff, but was really surprised to find out there was no standard C++ network library yet. I'd have to look for a ...
-1
votes
1answer
50 views
java for loop with map merge [closed]
Simple conversion of one type to another.
Is there a better way with streams :
...
2
votes
0answers
75 views
WebAPI: Async Filtering CSV content + Json/XML Serialization
I am coding a csv file filtering api in ASP.NET Core, which takes a csv file located at a given uri (and retrieved via the query string) convert the content to a collection of records, then apply a ...
5
votes
1answer
64 views
C++ API for reading RIFF files
I wrote a simple library for reading RIFF-encoded files in C++.
I tried to adhere to modern practices and provide an idiomatic API, but there is one part that sticks like a sore thumb to me: the way ...
7
votes
1answer
242 views
2
votes
1answer
57 views
Concatenating an already existing filename to create a new file
I had answered this question from stackoverlow and the code below is code that I wrote to explain to the OP a possible way to achieve what I believe they were looking for.
The general idea that I ...
1
vote
0answers
18 views
Stream wrapper in node.ts
I like Node.js and typescript a lot, but i'm still pretty much a newbie with streams. I know how to use them, but I have trouble understanding how the work, what are the consequences of using them, ...
4
votes
1answer
66 views
Formatted reading
I thought it might be useful if reading could at least sort of mirror writing. For example, if I write some output like:
...
0
votes
1answer
55 views
Nested stream to check the truth condition at first instance
Lets say I have Cars with Features, and I have been given a List of features to look for in ...
1
vote
2answers
75 views
Reading new data from a constantly updating file in Java
I have a log file which is constantly updated with new lines of data. I need to get new added data in java as soon as it's written. For now my solution is:
...
1
vote
2answers
72 views
Read integers from coupled lines in a text file
I'm trying to read a text file formatted as in this example:
5 3
3 1 5
6 6
6 1 3 2 5 4
Where the lines are coupled, with the line above always being of length ...
0
votes
1answer
248 views
Convert a stream to Promise
I need to collect all the data from the stream and resolve it as promise.
I created this stream:
...
0
votes
1answer
61 views
Text reading and string inputting program [closed]
The Main program. This program pulls from a .txt document with two separate strings, and outputs a .cs program that will display those two string via console when run. It uses a structure.txt file ...
1
vote
0answers
15 views
Swapping variable length strings asynchronously with connected microcontroller (Byte-banging)
I have an AT89S52 and an AT89C4051 microcontroller (both in the 8052 family) in which the bit lines of the data bus, one control pin and one status pin are connected together. In code, the data bus is ...
3
votes
2answers
110 views
Streaming modified lines of a file from a Controller
I am writing a piece of software that aims at streaming the modified lines of an external file located at given uri (and retrieved as a QueryString parameter).
I am trying to minimize the impact of ...
5
votes
3answers
143 views
SslStream-compatible ReadLine extension
This code is a Extension to just be able to read a line quickly and efficiently with support for SslStream.
What i'm looking to achieve:
Lower CPU usage by ...
1
vote
1answer
1k views
Stream operation with two dimensional array
I am trying to find the best average score from below two dimensional array:
...
-1
votes
1answer
45 views
How to use java 8 streams to get more readability and performance to this code [closed]
I got a forms list, and it has a tags list. I received from my front end app an array of tags (String), gotta filter these forms by these tags.
...
5
votes
1answer
1k views
Using Span<> and Memory<> to read UTF8 from a socket
I am experimenting with Span<> and Memory<> and checking how to use it for example for reading UTF8 text from a <...
0
votes
1answer
44 views
Copying contents between BufferedStreams in Java
This is a simple function that copies the content of one stream to another. My question is simple. I am currently, copying between the streams one byte at a time, but the streams are both Buffered. ...
2
votes
2answers
123 views
Read framed nested sensor data from memory stream
I'm implementing a TCP client to read data from a sensor. The sensor sends messages to connected clients framed with a start sequence, messages, checksum and end sum bytes. Because the sensor is ...
0
votes
1answer
51 views
Collect all items containing a word to a Multimap
I have a simple class like
class Item {
Set<String> wordSet() {...}
}
So each item has a set of words and I need ...
1
vote
1answer
182 views
Sliding Window Spliterator in Java
I implemented a custom Sliding Window Spliterator in Java.
Do you have any ideas how this could be improved?
Thinking if replacing the buffer with a plain array could have a positive impact on the ...
7
votes
3answers
145 views
Endless stream: stream a range and return default value if the range is exhausted
Introduction:
Motivation
Sometimes there is a need to merge N > 1 ranges, and they don't have equal length, but there is a value which can be used in case the range is already exhausted. It is ...
4
votes
1answer
751 views
Multiple client TCP stream reader
My server code is currently reading String data over a TCP connection form 2 different client computers. To do this I am duplicating the ...
2
votes
1answer
49 views
Idiomatic approach to applying a keyword replace algorithm to a Java 8 Stream
I have an approach that seems to work though I feel like I must be misusing something to achieve it. I am implementing a keyword matching algorithm to a Java 8 ...
3
votes
2answers
118 views
2
votes
2answers
80 views
Summing payments by year using Java Streams
I'm using 1.8.0_162 version of Java and here is my task about stream framework
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5
votes
1answer
776 views
Deflating a Stream using System.IO.Compression
I receive messages from a MessageWebSocket connection frequently, which are compressed with zlib. The following code decompresses them to a stream which can be read ...
4
votes
1answer
126 views
Templated byte streaming
I often have the need to take some type and stream it to something as a sequence of character byte values, so I came up with this to accomplish the task:
...
1
vote
3answers
77 views
Picking from a list of individuals based on their fitness values
I have this method that takes a list of my individuals (class has public field fitnessValue). I sum all fitnessValue and then ...
7
votes
3answers
3k views
File encryption with password
I would like to have my C# cryptography code reviewed.
I programmed an application that encrypts files with a password (provided by the user). It basically functions as a password manager, on the ...
0
votes
1answer
104 views
Ensuring performance of sketching/streaming algorithm (countSketch)
I have implemented what is know as a countSketch in python (page 17: https://arxiv.org/pdf/1411.4357.pdf) but my implementation is currently lacking in performance. The algorithm is to compute the ...
0
votes
1answer
837 views
Writing to MemoryStream with foreach
As you can see here:
20% CPU in a 3 minutes and 20 seconds excessive 40 executions async/await at a time for 9700 times caused quite a bit of CPU usage.
Code:
...
5
votes
2answers
213 views
Sequencing Collector for Eithers
Using Java 8, I'd like to sequence my eithers using a Collector:
Sequencing a stream of eithers means for me:
If there's at least one left either inside the stream, I expect the Collector to return ...
3
votes
3answers
169 views
Stopping an infinite stream with collection state
I took up a somewhat interesting challenge when I answered this question. The task is to collect the first occurrences of different types of animals from an infinite stream until you've caught them ...
4
votes
1answer
628 views
Media player subtitles in WPF - Part 1 Processing and storing
I'm writing a media player in WPF and since movies are playable, subtitles are a must.
Here's what it looks like so far:
On the left is the settings tab, in the middle is the actual player and on ...
3
votes
1answer
31 views
Creating charts for my UPS metrics - Part 2
Following up from my previous question
Streaming my UPS metrics for graphical viewing in bash
...
5
votes
1answer
263 views
Optimizing priority queue streaming algorithm in C++
This is a sorting algorithm that I wrote for finding the maximum \$n\$ elements at any time in a stream of IDs and integers with unknown length. I primarily do my coding in Python, so I'm not too ...
1
vote
1answer
132 views
Optimising multiple streams to single loop
I am trying to find the best way to optimise the converters below to first follow the flow I call convertAndGroupForUpdate, which triggers the conversions and ...
