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.
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Print the three most occurring chars in Java using streams
The three characters that occurs most in a given string should be printed by using streams/lambdas (functional programming). The order of characters that occur equally often should be preserved.
My ...
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Import large Excel files directly from XML streams into an SQLite database
I've got some pretty large Excel files with nearly 1M rows that are almost impossible to open and work with in Excel anymore that I'm migrating into a database. Desipte this these files will stick ...
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Streaming Parquet file in chunks for write operation
I am taking beginner steps into DE and was tinkering with writing an ingestion script which does the following tasks:
Reads data from a source (in this case a remote parquet file)
Writes it to local ...
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Copy file with text replacement
I am currently learning C++. I coded a tiny program for school and I wonder if there could be issues (like bugs or security issues) with it.
Any ways to make it have weird behaviours would be very ...
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Logger that can be redirected to switch off output
I am evaluating two implementations of a C++ logging mechanism.
The first implementation, below, unconditionally streams (calls the insertion operator) to the ...
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Merge multiple map with java stream api
I am trying to merge multiple map with Java stream API.
The reqiurements like ...
this method can receive multiple map, does not care hot many of it
support 2 merge method: intersection, union
if key ...
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Stream Implementation In JavaScript
I usually do not create Streams, but it seems that JavaScript doesn't have a built-in one and I figured I would do it for a personal project I am working on. This code seems to work as intended and ...
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SDL Stream for C++ follow up
Initial review requested here:
The big thing I had missed was that read/write either work successfully (and all requested data is read/written) or it fails the flags are set appropriately.
For write ...
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SDL Stream for C++
Looking at the SDL library.
Looking to load images from file into an SDL_Surface using the SDL2 Image API to do this I need to implement the SDL_RWops object class in terms of a C++ stream.
The reason ...
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Upload large image files to Azure
I am currently writing a program that takes image files from my data base and uploads them to Azure storage here is what I have written:
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ANSI background color codec
After a discussion of a mysterious color code on the Arch Linux live medium on the Arch Linux forums, I implemented a codec to encode (and decode) arbitrary byte streams to ANSI background colors.
The ...
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Improving a TCP communication between Python and C# programs
I have been using a TCP communications between Python and C# program. Python side (server) runs on a raspberry pi 4 and C# side (client) runs on my computer. RPi and PC connected over Wi-Fi. I have a ...
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Function to capture all stdout to String
I wanted to have a simple way to capture all sysout for a block of code. Ended up with this:
...
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Character source with lookahead for lexer
I've been out of the C++ game for a few years and I'm trying to knock the rust off by implementing a programming language. This Source interface is used to read ...
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Implemented Sorting of Map by Value and then by Key in java
So I had this requirement to get the frequency of names appearing in a list
and then print the one appearing the most number of times. If there is a clash, print the one which comes first in the ...
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Chunk output into files, based on number of entries and total size
Below is my client code which stream all the customer URLs from a golang grpc server. It takes Request input parameter and streams customer URLs based on matching a ...
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Basic Client/Server model using Unix signals
I've created a basic client/server model using user defined signals (SIGUSR1 representing bit 1 and SIGUSR2 for bit 0).
At a ...
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check if two lists of objects have the same value of an attribute
I have two lists of objects
localList and remoteList, both lists have a consent attribute
I want to check the value of the consent attribute if the same for both lists.
If not, I want to remove all ...
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Find vowels count in each given country names using Java6 and Java8
I am trying to use Java8 for a piece of code which I had written in Java6 and am able to achieve the result using both the version of java but I am thinking there could be more better way to write the ...
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Download and unzip an XML document
I am working on an integration software. I will need to download a list of products and import it into my website. The list of products will be downloaded from ...
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Stream that computes running median value
I was solving a DSA question, running median in a stream.
And I decided to design my own stream class with additional features.
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Getting metadata out of a Shoutcast stream
I have written the following class used to get the metadata out of an internet radio station. It takes a Node Stream and transforms it to grab the metadata out of the mp3 stream and then removes the ...
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C++ simple type serialization for streaming primitive- / pod types over a web socket (e.g. asio)
I am experimenting with asio web sockets and tried to write a simple serializer / deserializer.
I am also thinking about an approach on how to serialize some type information alongside the actual data....
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Streaming substrings of a string
Given a (long) string src, generate substrings (up to) len characters long on demand by iterating over ...
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How can I filter and sort LinkedList faster and more effective?I have list of orders that should be processed
I have method that fetches all orders from Database and filtering, sorting that data(I know better to do It by specific query to Database but I dont know how).
I have Order entity that has following
<...
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Conditional Output Streaming in C++
I stumbled into an idea for creating a simple class that would entirely avoid streaming of any data unless some condition is met. The idea here is that a ...
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How to append values into existed Vec with iterator
I have a Vec with value default [0], and then I want to append into the vec with an iterator which is read from stdin, now my code is not performant since I use an insert to shift all the values ...
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Reading stdout and stderr of a sub process using Win32, Overlapped I/O
I'm writing C++ Windows code that will start a process, then read its stdout and stderr, separately, into buffers.
If I try to just read the streams one at a time it may hang if the child process is ...
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Read compressed XML file inside ZIP and parse data as fast as possible
I am trying to read and parse an XML file inside of a ZIP archive as fast as possible. The XML file is roughly 85GB in size, so I know for a fact that I/O also plays a role here, as I need to ...
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A Paragraph Merger with Removing Overlapped Duplicated Lines in C#
I am trying to make a paragraph merger that takes multiple paragraphs and output a concatenated result with removing the duplicated overlapped lines due to redundancy. Each input paragraph is with the ...
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A Tiny Text File Read/Write class Implementation in C#
I am trying to implement a tiny text file read / write class FileIO in order to make the operations of reading / writing pure text files easily. The usage is like:
<...
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Beginner C fgetline() implementation
I am doing C coding practice by reinventing a getline function that works with any streams. Any comments on the overall code quality, including correctness, style ...
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Filter out comments in Delphi source code
Today I am working on refactoring and documenting some ancient Delphi code. In that language, which is derived from Pascal, there are three forms of comments:
...
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Multiple filters and maps java stream
I need to find the odd occurring numbers as a list. For example the below list should give 1 and 2 as output.
Is there a way that I can do it in a better way?
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Concise and exception-prone method for running method on component
I have a list of Components. When an actor is connected, I want to run onActorConnected on each component. However, if a ...
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Javascript / Go plug-and-play server-side WebRTC support for webcam streaming
I normally program in a linux vm and decided to do some machine learning with my webcam when I realized the vm didn't have access to my camera hardware.
That kicked-off a mini project to create a plug-...
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Produce the sum of all white space separated integers in a given file
How's my code? Works perfectly for what I'm trying to do :)
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LZW Compression Library
I wrote a library that implements LZW compression and decompression. A goal of this project was to help me acquaint myself with modern C++ development practices (I primarily come from a Java ...
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Set default value for remaining size of list by use of Java 8 and Stream
I have written a method which will return the size 16 List every time. If the input List has size less than 16, the remaining list object will be filled with default values. Is there any way to ...
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Reading one source Stream by multiple consumers asynchronously
The problem was using single Stream from the HTTP response in multiple consumers simultaneously. For example: while data is loading, I want write it to the some ...
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Deserialise Json and Read Stream twice in C#
So this is a modern implementation of a HTTP client, trying to find a way to optimise/simplify this.
Specifically the DeserializeAsync method with the GetStream and the compiler statement for if/debug ...
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Sorting squares of an integer array
I had this question in an interview recently. Given a sorted array of integers, return a list of those integers squared, with the squares sorted. So given an array of these numbers:
...
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Min heap without recursion
The code reads in integer array from user input and builds a minimum heap via an iterative scheme.
Are there any edge cases in which this approach would fail?
For the following test case/command ...
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Finding out the indices of common elements in two array lists having duplicate elements
I have two lists which are also having some duplicate elements , i am converting this list to map as key value pair with element index as the value for the key - element
List 1 : [1, 2, 3, 4, 5, 6, ...
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Reading bytes between two quotes from a stream and decoding it to its appropriate character set [closed]
This is a component for a lexer which operates on a byte input stream that handles reading and decoding the contents of a string contained within double-quotes. The validity of the encoding is handled ...
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Concisely, robustly, temporarily stashing c++ iostream formats
I got tired of the boilerplate and tedium restoring formatting context, so I made an RAII stasher that relies on the destroy-at-end-of-full-statement temporary semantics. With C++17 I can get it down ...
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Chunking strings to binary block-based output
This is a follow up to
Chunking strings to binary output
I found the reviews quite helpful in pinpointing what to fix with my code. Here's the result of that update. The format of the output is the ...
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Custom manipulator for changing at what characters a std::istream split words
Introduction
By default, input streams (e.g., std::cin or a std::istringstream) split words at space when using the ...
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Chunking strings to binary output
A follow-up to this question is Chunking strings to binary block-based output
I have code which takes a text file as input and creates a special binary output form of the input. Specifically, the ...
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