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).
933
questions
10
votes
2
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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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6
votes
3
answers
470
views
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/...
- 161
1
vote
0
answers
52
views
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 ...
- 11
2
votes
1
answer
40
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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 ...
- 94.3k
3
votes
1
answer
32
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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 ...
- 341
1
vote
0
answers
45
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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 ...
- 43
3
votes
1
answer
246
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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 ...
- 43
1
vote
0
answers
55
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Calculate total running time for movie series
Which of these 2 functions is better and more readable and why? (Both functions do the same thing).
My goal is to get the total time of a series, using the TMDB API (which has a limit of 20 different ...
- 11
4
votes
1
answer
93
views
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 ...
- 401
5
votes
1
answer
105
views
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 ...
- 83
3
votes
0
answers
35
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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,...
- 31
1
vote
0
answers
25
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Dividing the page into 2 sections using flexbox
I want to have a layout for desktop screens, so mostly wide screens with 4:3 or 16:9 aspect ratio.
The layout is made out of 2 sections: right and left. The left section takes 2/3 of the width and the ...
- 361
2
votes
1
answer
82
views
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 ...
- 123
2
votes
3
answers
105
views
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:
...
- 35
1
vote
1
answer
122
views
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 ...
- 35
1
vote
0
answers
109
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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 ...
- 27k
7
votes
6
answers
1k
views
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 ...
- 179
3
votes
1
answer
93
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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 ...
- 31
1
vote
1
answer
70
views
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 ...
- 59
3
votes
3
answers
93
views
Parse program arguments of the form key=value
I have two proposals for parsing arguments:
Method A
...
-1
votes
1
answer
158
views
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 ...
- 9
0
votes
2
answers
215
views
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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2
votes
1
answer
158
views
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 ...
- 41
3
votes
2
answers
908
views
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 ...
- 141
1
vote
2
answers
102
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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:
...
- 27k
5
votes
2
answers
651
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Recursively calculating powers by squaring
Consider the following function that implements optimised O(log n) exponentiation by squaring:
...
- 229
2
votes
1
answer
136
views
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?
...
- 263
0
votes
1
answer
68
views
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:
...
- 111
2
votes
1
answer
84
views
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 :
...
- 313
1
vote
1
answer
51
views
Comparing a weak fluent API with a strong fluent API in Java [closed]
I have this simple POJO:
...
- 27k
2
votes
4
answers
1k
views
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
...
- 45
2
votes
2
answers
93
views
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 ...
- 233
2
votes
1
answer
139
views
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 ...
- 123
1
vote
1
answer
92
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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.
...
- 27k
0
votes
0
answers
72
views
Euler's totient function in Rust, with a performance difference between generic and classic functions
I recently started to program in Rust, having like 2 good years of experience in C++, I thought it would be possible to directly switch to Rust without following a lot of tutorials, especially knowing ...
- 101
2
votes
1
answer
152
views
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 ...
- 21
0
votes
1
answer
112
views
Find longest "binary gap" [closed]
I'm doing a few challenges and I found this one on Codility:
A binary gap within a positive integer N is any maximal sequence of
consecutive zeros that is surrounded by ones at both ends in the
...
- 101
1
vote
1
answer
64
views
Shortest path in dags: Part 2/3 - the preprocessing and shortest path algorithms
Part 1/3
Part 3/3
I have this library for performing shortest path queries on dags (directed acyclic graphs). This post presents the shortest path algorithms and the topological sorters. Two ...
- 27k
0
votes
1
answer
196
views
Show numbers per step count
I have a problem where I need to display the below output
1
23
456
78910
My first solution is
...
- 103
3
votes
1
answer
111
views
"Select followed by First" versus "First followed by Select" when summing the data for a student
I am wondering which one I should choose between the following two options when I need to calculate the sum of Data of the student with ...
- 271
5
votes
1
answer
305
views
Calculate the number of people occupied at each time interval
The following scripts calculate a list with the number of people occupied at each time interval.
The intervals are defined by the timestamps of two consecutive events that come from the sorted list <...
- 53
2
votes
3
answers
786
views
Returning the other value of boolean enum
I have a class with a "mode" state. There are currently two modes and we are not likely to add more in the future.
The class has a CurrentMode property, ...
- 214
1
vote
1
answer
568
views
Functional Fibonacci in OCaml
I'm very new to OCaml, and as an exercise I decided to implement the nth Fibonacci algorithm (return a specific Fibonacci number, given an index) in different ways, using what I've learned so far.
I ...
- 751
-2
votes
1
answer
182
views
Insert row into database using static or non-static method [closed]
I would like to know if there are any benefits of one of the following 2 methods which insert an object into a database
The first function calls the Model method statically, creating a new instance of ...
2
votes
1
answer
77
views
Batching method implementation - Scala
I need to implement a function/method that operates on a sequence of values, and acts kind of like takeWhile, but with 2 differences, first, it doesn't act on a single element, it is performed on a ...
- 123
1
vote
1
answer
112
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Categorise amount into "small", "medium" and "large"
I have a super simple function that returns a text label for a range of the input
...
- 315
3
votes
3
answers
268
views
A refactored payment service, handling several payment schemes
I was asked to refactor a class, to make it adhere to SOLID principles, with testability and readability. I thought I had done a decent job, only my feedback was:
a) Unnecessary introduction of ...
- 140
3
votes
0
answers
789
views
Return a 2D matrix from a C++ function in Python: ctypes versus pybind11
I found two ways in which I can use a custom C++ function (returning a 2D matrix) in Python. One approach that uses the Python module ctypes and another that uses the Python module pybind11.
Approach ...
- 289
2
votes
0
answers
5k
views
What is better - using SerialPort with or without await/async methods?
I'm having an implementation using SerialPort in C# using Visual Studio 2019. I'm using it in a Windows Application, using .NET Framework 4.7.2.
When I open and ...
- 41
1
vote
1
answer
376
views
Constructing routes from imported URL constants
There is a file created with the project paths in a dictionary.
Example:
...
- 113