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).
801
questions
3
votes
2answers
54 views
Organise method flow
I have something like a shop. It is limited to a checkout page, which will send an email. Nothing big, but a nice thing to learn more OOP.
Almost every time I develop new classes I am wondering how ...
7
votes
3answers
508 views
C++/Opengl voxel renderer
I have tried going back to C++ after long time of mainly doing C#. I realize that the code is far from perfect, however I would really appreciate if someone could point of what exactly is wrong and ...
5
votes
3answers
332 views
0
votes
2answers
70 views
Implementation of the Selection Sort Algorithm
I have tried to implement the Selection Sort Algorithm in two different ways, and I was just wondering if that is considered to be a valid implementation of that algorithm. Would that be also ...
1
vote
3answers
185 views
Comparing two simple distance calculating algorithms
Is the single method printMaxDistance_a or the two methods printMaxDistance_b AND ...
2
votes
2answers
61 views
Find the next empty column on a chessboard [closed]
I was playing around with the "eight queens" problem, just to see how I could use C++ algorithms to write less code.
I figured out a way to find the next unused column using ...
3
votes
3answers
103 views
MySQL/MariaDB Data extraction / String manipulation / “TopN” processing => Performance of C++ vs php vs python
EDIT1: Suspicion that mariadb++ is affecting my performance results compared to the raw "mariadb/mysql Connector-C"??
EDIT2: I did a barebones C-Only implementation and it comes in at 222ms vs the ...
5
votes
1answer
86 views
PHP OOP classes used for building web applications
The following classes are used for web development. And I was wondering if I'm implementing them correctly specially the Base class.
This is a version 2.0 of the question the classes are as follows:
...
6
votes
2answers
95 views
OOP design for election board
I am trying to build an OOP design for an election system.
A citizen can nominate themselves to be a contender. So all contenders are citizens. I was thinking of keeping the relation ship IS-A by ...
5
votes
1answer
94 views
3
votes
0answers
41 views
Resizable containers with VueJS
I reviewed the code in Resizable split DIVs Vue.js, suggesting that the OP use computed properties and bound styles to simplify the code (at least reducing the need to use ...
0
votes
1answer
57 views
Choosing between 2 Fibonacci alternatives [closed]
Task:
Return the fibonacci value at a given index.
e.g: input: 6, return: 8.
Algorithm 1:
...
5
votes
1answer
132 views
Shoe shine shop model in Rust and C++ - Follow-up
I've just refactored my Rust and C++ code which simulates the shoeshine shop model from this question. What else can be improved?
C++:
...
0
votes
0answers
81 views
Recursion on graphs - networkx VS adjacency lists with native lists, sets or numpy vectors ( python )
Hope someone can help me out in reviewing this code to make it faster.
My goal is to create a graph recursively:
query for a node and its neighbors from a db (not present here)
add it and its ...
17
votes
3answers
2k views
Shoe shine shop model in Rust
I'm learning Rust and a few questions did arise during translation of my C++ code to Rust. There are comments in Rust code I'd like to be answered. Is there an idiomatic way to solve this task? The ...
11
votes
4answers
672 views
Assign a variant to a variant
Quick review:
I've been writing API code which receives user input that can come as either an object or a value type - a problem outlined here.
In order to write an unknown data type to a variable, ...
2
votes
0answers
30 views
Snake string implementations
This snippet uses a string as an output. As we iterate through the input string, I just keep appending a character to the string and I know this just pretty much creates a new string everything I add ...
5
votes
2answers
96 views
Rotate a matrix, using transposition and reflection
I want to compare two solutions to the following question from Cracking The Coding Interview by Gayle Laakman McDowell :
1.7 Rotate Matrix - Given an image represented by an NxN matrix, where each ...
12
votes
4answers
1k views
Extraction of value from a dict-tree, given a path of arbitrary length
Problem: We read a complex json-file which grants us a tree in terms of a python "dict of dicts". We're then requested to retrieve a specific path from the tree, represented by a list of elements. The ...
1
vote
1answer
36 views
Filter string with min distance in r
I have the following sample data:
target <- "Stackoverflow"
candidates <- c("Stackflow", "Stackflow", "Stckoverfow")
I would like to filter the string from ...
4
votes
1answer
102 views
Random password generator that ensures diversity of character types and absence of confusing characters
I wrote the following password generator, to generate a password in which each character group appears at least at once.
...
2
votes
2answers
60 views
A function that returns all letters in the Alphabet except the ones in a pre-defined list
This function should return a string that is comprised from all the letters in the Alphabet except the letters in a pre-defined list in alphabetical order.
Assuming all letters in the pre-defined ...
4
votes
1answer
149 views
Decoding of binary data (AIS) from socket
I am currently working on a AIS message decoder written in pure Python. It's just a little project to teach me some things about binary data, decoding, etc. Because I am only programming for about a ...
5
votes
1answer
69 views
BitBoard class In TypeScript for chess logic
I'm working on writing a Chess Logic Library in JavaScript for learning purposes and was wondering how good these two slightly different implementations of a BitBoard are.
The first stores the board ...
10
votes
4answers
769 views
Shuffling multiple iterators in order
I have a Python function w/ specified functionality, and two proposed approaches - which do you prefer, and why? (performance, simplicity, clarity, etc) (both use ...
1
vote
0answers
61 views
Spring Boot - JPA query execution Time
Any one suggest me right way to write mapping more then one table using spring-boot (jpa), i was done it, but its required more time to extract result,
Following are the Mapping of Pojo:
First:-
<...
1
vote
0answers
139 views
Fast matrix transpose
I would like to improve the naive matrix transpose algorithm by using a cache friendly algorithm.
So far there are 4 variants.
Iterate over the source matrix:
...
4
votes
1answer
103 views
The best way to unwrap the optional in java [closed]
Instead of using the null checks I tried using Optional and safely unwrapping the optional.
Approach 1
My first approach of unwrapping the ...
2
votes
3answers
113 views
Classifying integers as “weird” or “not weird”
Problem Statement
Given an integer N, perform the following conditional actions:
If N is odd, print Weird
If N is even and in the inclusive range of 2 to 5, print Not Weird
If N is even ...
2
votes
0answers
28 views
Angular forms - reactive vs. [(ngModel)]
I am developing this angular app and it has big forms with 100 + fields. I was thinking about using [(ngModel)] without reactive forms, so that it's easier to do ...
7
votes
1answer
188 views
A simple game that keeps track of the number of questions asked
This is just a simple counter, i was able to code it in two different ways but i want to know which way is more efficient and which way is more readable.
and which set of code is more "correct" in ...
1
vote
1answer
51 views
LeetCode: House Robber I C#
https://leetcode.com/problems/house-robber/
You are a professional robber planning to rob houses along a street.
Each house has a certain amount of money stashed, the only constraint
stopping ...
3
votes
0answers
35 views
SageMakerTrainingOperator in Airflow
I have made an operator (surrounded by others operators) for training a model in sagemaker in airflow and I have doubts how would it be more readable or more pythonic. First I did this:
...
4
votes
1answer
68 views
LeetCode: Symmetric Tree C#
https://leetcode.com/explore/interview/card/top-interview-questions-easy/94/trees/627
Given a binary tree, check whether it is a mirror of itself (ie,
symmetric around its center).
For ...
2
votes
0answers
19 views
How to differentiate web fonts font-face font-weights?
What do you guys think:
OPTION #1 (same font-face name and change font-weight)
...
14
votes
2answers
581 views
Get the encrypted payload from an unencrypted wrapper PDF document
This is code, written by our dev team, and SonarQube tells me that the Cognitive Complexity is too high: 21, and the current (default, out of the box) metric limit is 15. I've had a go at reducing the ...
0
votes
0answers
32 views
Polling an SFTP server to list files in a directory
When is it better to instantiate the sftp client globally vs inside a function as shown below? What considerations favor one method over the other?
For a long ...
4
votes
0answers
56 views
Resolving Git conflicts with Javascript
Challenge:
Resolve git conflict by resolveGitConflict(linesArray, resolveMode), where
linesArray is an array of strings
...
0
votes
0answers
33 views
Store tweets to a local MongoDB server
I use NodeJS along with the MongoDB NodeJS Driver to store tweets into my local MongoDB server. In the following setup, mongos insertOne method gets invoked quite ...
5
votes
3answers
148 views
PHP classes with functions used for building a web application
The following class is set of functions I use for web development(examples below) and I was wondering how to structure it.
Examples:
...
2
votes
0answers
24 views
Fast algorithms in Javascript for shortest path queries in directed unweighted graphs - follow-up
(See the previous iteration.)
Now I have reworked my pathfinder program, and I ended up with this:
...
5
votes
1answer
285 views
Simple HttpClient usage for integration tests in .NET Core
I have this simple setup for a .NET Core project which is just a very basic HttpClient usage to do some simple integration tests to a RESTful API. For now the test project remains separated from the ...
1
vote
0answers
35 views
Checking for a values existence: slice iteration vs map lookups in Go [closed]
Assuming I have the following slice:
mySlice := []string{"one", "two", "three"}
and I want to know whether or not it contains a given string, say ...
3
votes
2answers
66 views
Tkinter Program to teach Arabic Part 2 - Proper use of Global Variables
In part one (Tkinter program to teach Arabic) I was asking for help to review the part of the program responsible for managing the main screens and links to all of the different lessons. From the ...
3
votes
1answer
59 views
Comparing algorithms to decode a String
I am writing a function to decode a string, which means performing a string transformation like 3e4f2e --> eeeffffee.
I have ...
6
votes
2answers
77 views
Filtering a list of customers in Java based on three criteria
Let's assume that you need to filter customers based on 3 criteria:
name
tags assigned to customer
customer's location
For some reasons you have to do it directly in your program code, without ...
0
votes
1answer
76 views
Extract HTML tags and its content from a string [closed]
Goal
I want to extract HTML tags and its content from a string. The content (input) is queried from WordPress database.
Sample data (input)
I extract this dummy data from my WordPress database: ...
5
votes
5answers
2k views
Least cost swapping in C++
I've made a solution for a problem which involves changing order of objects having some mass, so it costs a mass of an object A and a mass of an object B to make a swap. The program needs to read a ...
10
votes
4answers
3k views
Sum Square Difference, which way is more Pythonic?
I'm using python 3 and I am creating an algorithm to find the sum square difference for the first 100 (or 1 to x) natural numbers. This happens to be project euler problem 6 if anyone is wondering.
I'...
3
votes
1answer
90 views
Deserialize with LINQ query code in PageModel or PageView
Today I do something like this, where I get, select and sort some data and pass it on to the view (which loads a partial view) as a list of custom objects
Page model
...
