Questions tagged [comparative-review]
This tag is used for questions which present a problem and multiple solutions, where the asker wishes to know which solution is best (and why).
937 questions
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Making a shell around jointjs for react, wondering between two approaches
The React tutorial of joint js shows a way to use jointjs in react. The tutorial is quite limited: it is basically defining a special named div and putting all jointjs code inside.
The jointjs ...
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Better Microsoft SQL update
I've got the following SQL that I need to update by adding a new parameter:
...
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Refactoring Agreement Status Logic: Applying SOLID Principles and Separating Logging/Auditing with Decorators
I have some production code that contains a lot of repetition and mixes business logic with auditing and logging. I've made two attempts at refactoring it, primarily using decorators. I'd like to get ...
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Generic ring-buffer
What would be the preferred C way of implementing a simple generic ring-buffer.
Which approach from the 2 below (or even some 3rd) would you use and why?
Specifically, this will be part of an embedded ...
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Comparing two Tree sort algorithm variations implemented in Java
I have this repository. It contains three variations of a simple sorting algorithm for integer keys.
The idea is that we keep a balanced BST in which each node holds the integer key and its frequency. ...
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More Square Root
This is a follow up question to my Studies on Square Roots post. I'm posting additional code for solving for square root similar to the other, but with more code to benchmark.
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user284928
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Studies on Square Roots
This post marks the beginning of my ventures into calculating square roots. However, I have no idea how the processor, more specifically the FPU with the fsqrt ...
user284928
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48
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Send a QNetworkRequest with a parameter
I want to send multiple QNetworkRequests in Python 3.12 that each downloads one image from a server, using a single callback function. To be able to distinguish ...
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709
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Capture multiple errors before raising an exception
I have a scenario where I need to store values from some environment variables (names of which I cannot control). My first run at this was pretty basic, however this is not usable as an exception ...
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How to avoid null Values in a .NET 6+ ASP.NET project [closed]
I'm currently exploring multiple options to get rid of null values in my .net web api applications.
Let's say, that we have the following Project:
...
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Reading a file into lines (benchmarking getline() vs mmap_memchr() vs mmap_getline() vs fread())
This is a follow-up to: Reading a file into lines with mmap vs getline.
The actual names of the functions are not ...
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Reading a file into lines with mmap vs getline
I required a function to read a file into lines for a text editor, and ended up with two routines. One uses getline(), and the other uses ...
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Simple C++ event loop - static vs dynamic dispatch performance
I have two extremely simple toy implementations of an event loop, and would like to understand the performance differences between them.
First impl - events with a virtual 'handle' method - dynamic ...
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Comparing a set of parameters contained in two separate strings in Powershell
I have a situation where I need to compare two strings with each other in a foreach loop that potentially run over millions of rows of data. The two strings will always contain between 1 and 12 ...
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Subtract two lap times (m:ss:fff)
I have two lap time strings I need to subtract, the format is minutes, seconds, milliseconds. This is to compare a new world record time to the previous holder's ...
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Compute the mean of a series of user-entered numbers
Which is more elegant out of two methods as mentioned below mostly from memory prospective?
Both methods achieve the same result, but from a memory perspective, In Method1, we are storing the running ...
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Count number of clients that have subscriptions
I have two working solutions, one using an accessor (getSubscription()) and one using a member variable (subscription).
Which ...
Qmails
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940
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Leap Year Calculator Using If Elif and Else Only
I'm taking the 100 Days of Code (Python) taught by Angela Yu on Udemy. There have been a few other questions revolving around this lesson but I can't find one who came up with my specific question so ...
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Implementing a --assume-yes/--assume-no command line flag to affect a `input()` based `confirm()` function
I have a Python command line application that needs to ask the user for confirmation at some point. I want to add a --assume-yes/...
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Combined or separate data-cleaning routine
I am a junior data engineer that have 3 years of experience with Python. I write a lot of Python code for my job and I came up with this question I can't solve by my own. I don't have the chance to ...
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Comparison of Named parameters and the Java Builder pattern in C++
OK writing a C++ wrapper on top of openSSL.
Setting up the SSL_CTX* object. There are a whole bunch of extra functions to specify functionality on how this object ...
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maxlist(L, M) that succeeds if M is the max number in the list L
I'm working my way through "Prolog For Artificial Intelligence" by Ivan Bratko, and exercise 3.17 is to write a maxlist(L, M) that succeeds when ...
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Revised: best practice of communicating with an instrument using Python
This is a revised version of the code from the previous question. It corrects the spelling errors, add in appropriate comments for argument types and doc strings, rewrite number representation, and ...
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Best practice of communicating with instruments using Python [closed]
I have seen two different methods - getter and setter method and property - being used in Python libraries which are written for communicating with instruments via VISA commands. An example is given ...
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Spring REST Endpoint for Saving a User Inquiry
Here's a piece of code from codebase I maintain/contribute to.
It is a Spring REST controller, which exposes an endpoint to create user question. The question consists of title, description and ...
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115
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Instance specific code generation
Disclaimer: I've asked this question before on Stack overflow and got a response that this place would be a better fit so I am copy pasting the question here.
I've come up with two different ...
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TestAssignment class that checks for certain Git repository conditions
TestAssignment is a Python class designed to check certain conditions in a Git repository. It has several methods that check for the existence of required files, the initialization of a Git repository,...
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118
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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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3
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108
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Wordlist formatter code
I am making a "wordlist cleaner" module that loads a words.txt file, and returns a list of cleaned/sorted words.
Full code:
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209
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Excluding attributes entirely vs. setting them to None
I am making a program that parses profiles from a website. Some profiles are "public" and others are "private" with limited information. Public profiles contain a lot more data and ...
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136
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Making Robert Tarjan's offline LCA algorithm run (much) faster (Java)
I have produced this GitHub repository that compares the performance of:
Robert Tarjan's off-line lowest common ancestors algorithm,
An improvement of the above algorithm.
Typical demo program ...
- 29.8k
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1k
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Compute "negative" version of vector of vectors
Given a std::vector<std::vector<double>> (e.g., representing some points in a space with D dimensions), I want to ...
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rust sort numbered directories (non-lexicographical)
I am very new to rust and have been reading up and playing around to get a better understanding. I was trying to replicate a small task that I have done via bash scripting before, as a way to ...
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calculating the percentage of distribution of ids per Loc for each country
Which of the two queries is theoretically better and why?
I would like to understand why query 2 takes longer although there is no relevant information in the Execution Plan.
I'm querying a Presto ...
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103
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Parse program arguments of the form key=value
I have two proposals for parsing arguments:
Method A
...
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181
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Getting three numbers input interactively and process them
I'm new to Python and programming in general.
Let's imagine I have a simple task:
Given 3 numbers from user input, I need to count negative ones and print the result.
Considering what I know about ...
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461
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Functional Style if/else in java
I would like to ask the opinion for experts out there. The following code snippet was written by a colleague of mine who is very fond of functional style in Java.
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162
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C/C++ hash looking in flat database compared to PHP
I have a hash table which I would like to query as fast as possible.
The hash table is stored this way :
When I query a hash, I extract first 4 characters then use it to find the file. For instance a ...
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Convert Rankine temperatures to Celsius
I have this Python Package called ToTemp under development for precise Temperature Conversions and currently thinking in changing the method's implementation to be ...
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Circular list vs. doubly-linked list: which is faster?
In this post, I will compare performance of a circular list and a conventional list with head/tail -references:
...
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Recursively calculating powers by squaring
Consider the following function that implements optimised O(log n) exponentiation by squaring:
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Array Implementation In JavaScript
Review
I have written my own implementation of Array in JavaScript with the basic functionalities. Can anyone please review this code and point out the mistakes/how to make the implementation better?
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Comparison of two ways of looping in Python [closed]
I wrote a small script to demonstrate two ways of looping in Python: with and without using the index. I want to know which way is better. Please see the example:
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Build a message string depending on the type of signature of an invoice
The following method was meant to build a message depending on the type of signature of an invoice. It contains some if-else statements and code duplication.
The original method :
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Comparing a weak fluent API with a strong fluent API in Java [closed]
I have this simple POJO:
...
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1k
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Calculate the median value of combining two sorted lists
I have solved a leetcode problem (Median of Two Sorted Arrays), and I came up with two solutions.
Solution 1
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Project sequence to multiple sequences using LINQ (or extension methods)
I'm creating a method that expands a sequence.
This is a sample of how it works:
Input: {1, 2, 3}
Output: {1}, {1, 2}, {1,2,3}
So far, I've been able to solve the ...
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LeetCode#494 target sum (dart is slower than python)
I'm trying to solve a LeetCode problem target-sum, in two languages: Python & Dart. The difference of time taken is shocking for me"
Python took ~70ms while Dart took ~900ms !! Why does Dart ...
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Selection algorithms (order statistic) in Java: linear time vs. sorting selector vs. Quickselect
This post is about computing order statistics: given an array \$A\$ (not necessarily sorted), find the \$k\$th smallest array component. The entire repository is here.
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Card game simulations, with a multithreaded version slower than the single-threaded one
I'm new to rust and I'm trying to build a card game simulation to find all of the best actions with all possible hands. This requires a lot of simulations and my first 3 million are already taking a ...
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