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Unanswered Questions

616 questions with no upvoted or accepted answers
16 votes
0 answers
3k views

Realtime concurrent Haskell MIDI buffer

Problem Background MIDI is a serial representation of control signals to a sound generator. Typically, a noteOn message initiates the attack phase of a sound at a given pitch. The note will ...
15 votes
0 answers
264 views

Download files in parallel

This module has a ensure_downloaded function which takes a slice of Urls. It downloads all of the urls to a local downloads ...
10 votes
0 answers
760 views

Sieve32FastV2 - A fast parallel Sieve of Eratosthenes

I’ve created a much cleaner, better designed version to my parallel sieve. I’ve implemented most of EBrown’s micro-optimizations but also revamped the code on my own (that is not in direct response ...
8 votes
0 answers
354 views

STTCL FSM framework based on the GoF State Pattern, Part I: The basic interfaces

Preface I have decided to let my pet project created some years ago to undergo a code review here. The review will be broken into parts according to meta question Multiple reviews or one big review?...
6 votes
0 answers
150 views

Replacing tags in email

I have multiple tables and multiple email templates which will need tags replacing. The data for the tags depends on the recipient id as the data will need to be fetched from different tables. I have ...
6 votes
0 answers
167 views

Efficiently generate distinct subsets which sum to a particular value

Related: Find all distinct subsets that sum to a given number This code is supposed to efficiently generate all subsets of a list such that the subset's values sum to a particular target value. For ...
6 votes
0 answers
9k views

Example of multithreading in Python3 / PyQt5 using QThread

I wanted to make a simple example of multithreading with QThread in PyQt5 / Python3. The script generates a set of QLineEdits and buttons to start and stop a set of ...
6 votes
0 answers
128 views

Android component animatable on its height

I'd like to have a code review for a component which is supposed to be animatable on its height. It's supposed to be a transitioning element. I find it quite laggy on my phone. ...
6 votes
0 answers
815 views

Pseudo-parallel depth-first search

I'm writing a small program that generates a file containing an adjancency matrix, it then reads from that file, constructs a graph and does something like a parallel depth-first search (dfs) on it. ...
6 votes
0 answers
2k views

Implement two level caching using spring's cache abstraction Cache and CacheManager

Details about spring's caching framework are here. When I was reading this link, I thought the composite cache mentioned there was one that used levels of caching based on the order given to the ...
5 votes
0 answers
106 views

Dial's heap in Java for integer priority queues

(The entire project is here.) Intro I have this priority queue data structure for non-negative integer priority keys. I recall that it is called Dial's heap. Code Implementation ...
5 votes
0 answers
158 views

Java OOP Hangman revision #4 includes UML

This is a continuation of this question. In the game the player chooses a topic and then gets a random word (or words) from that topic to guess. I've repartitioned the code into objects several times,...
5 votes
0 answers
1k views

Exception handling: using @JsonProperty value to make error message

If the validation in RestController fails, I need to handle MethodArgumentNotValidException and provide an errorMessage, that ...
5 votes
0 answers
707 views

Multithreaded pathfinding in Unity C#

I've tried to implement multithreaded pathfinding in an attempt to increase performance, but if anything, performance seems to actually decrease when I enable multithreading. Is there anything I ...
5 votes
0 answers
193 views

stable producer/consumer threads in python

I have implemented a producer/consumer functionality using threads in a given framework and I'm pretty sure I did not cover all possible scenarios. I made a small reproducible version. Lines ending ...

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