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).
814
questions
-2
votes
0answers
22 views
How to generate random values for (a,b,c,…,w,x)? [closed]
I have to find randomly generated values of a,b,c,d....x for the equation [(ay1)+(by2)+....+(vy23)+(xy24)-CONST_VAL]=0 where value of Y1,Y2...Y24 and CONST_VAL are given ?
I write my code, but it is ...
6
votes
2answers
379 views
Implementing web scraping in a function and in a class
The goal of my code is to implement a web scraping routine to obtain the name and the price of a product. I want to put this routine separated from the main program file. Sample url to scrape: https://...
3
votes
0answers
38 views
Simple beginner Rust CLI file reader that prints to stdout
Q: Am I approaching writing idiomatic Rust code correctly?
Hi CodeReview, I'm a beginner Rustacean coming from Python going through Rust books (The Rust Book, Rust in Action). A lot of the beginner ...
0
votes
0answers
32 views
Report writing, do the formatting work on database or non-database language?
When report writing, sometimes getting the data you need can be quite straightforward in SQL, but getting the data in the exact format you'll need it in for the specific report can be quite tricky.
It'...
4
votes
1answer
38 views
Finding missing void keywords in C source code
I'm writing a bash script to search C source files and find the lines where I missed the void keyword (unlike in C++, in C, empty parameter lists have to be indicated with the void keyword).
I read ...
1
vote
1answer
72 views
Best practice to initialize instance variables for a POJO when values are null
I am using Java 8. I haven't found another question that fits mine exactly, and I've come across some conflicting information on best practices with what I'm trying to do.
I'm creating a POJO which ...
2
votes
1answer
67 views
Simple BST implementation using C++ Struct
I am trying to implement DSs in C++ and this is BST insert and search functions. I tried in two different ways, please review and see if one is advantageous over other.
With pointer to pointer
...
22
votes
11answers
5k views
Find nth Fibonacci Number, using iteration and recursion
I'm a beginner programmer and I came upon this problem which is to find the nth number in the Fibonacci series.
I used to solve the problem using a for loop; ...
3
votes
1answer
138 views
Convenience function to save and load pickle objects
I want to come up with a simple convenience function to save and load pickle objects. A secondary objective is to simply execute the function without the above function. I have come up with two ...
2
votes
0answers
143 views
generic implementation approaches for a recursive function
Let's take the famous fibonacci problem as an example but this is a generic problem. Also, taking scala as the language as it's rather feature-rich. I want to know which solution you'd prefer.
we all ...
-1
votes
1answer
76 views
abstract base classes versus the curiously recurring template pattern [closed]
Background
Apologies for "burying the lead." The questions are in the next section.
In my application, the purpose of inheritance is to abstract away complicated logic in the base class template, so ...
6
votes
3answers
158 views
C# Event Manager without allocations
I'm using my own Action-based Event Manager for a while and looking for ways to improve it.
Mainly it's used in game development, where excessive garbage generation can lead to severe consequences. ...
0
votes
1answer
52 views
Schedule talks in tracks [closed]
Consider my simple business requirement as follows:
There is a list of talks and they need to be scheduled in tracks. Each track has a morning session starting at 9am and an afternoon session ...
3
votes
2answers
60 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
535 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
335 views
0
votes
2answers
72 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
192 views
Comparing two simple distance calculating algorithms
Is the single method printMaxDistance_a or the two methods printMaxDistance_b AND ...
2
votes
2answers
63 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 ...
2
votes
3answers
115 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
92 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
100 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
100 views
3
votes
0answers
54 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
58 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
138 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
92 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
675 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
104 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
37 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
103 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
66 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
212 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
87 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
784 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
120 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
220 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
160 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
125 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
49 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
190 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
53 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
41 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
71 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
1answer
34 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
588 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 ...
1
vote
0answers
62 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 ...
