Traversing a 2D Matrix
In this blog, I address the problem of 'find the number of islands' or 'connected components in an undirected graph' traversing a 2D matrix.
Software Development
Posts about software development in general.
Role-Based Access Control in PHP: Database Schema, Algorithms, and Implementation
Complete guide to RBAC in PHP: database schema, why BST beats naive iteration (O(n log m) vs O(u×r×p)), implementation with simple-rbac library, and common pitfalls.
Recommendation Assistant 1.0.0 is here
Recommendation Assistant in version 1.0.0 is part of my Master's Thesis and denotes a hybrid approach of Recommendation Algorithms.
Contact Synchronization Client: A First Try
This blog post describes a first attempt at building a contact synchronization client using PHP and Python.
Integer Bitvectors and the Theory Behind
Integer Bitvectors provide an efficient way to search & manage large, unsorted data. Learn theory, implementation & practical applications.
Resolving Database Dependencies Using Topological Graph Sorting
Learn how topological graph sorting can resolve database dependencies, handle normalization violations & optimize database management.
RecommendationAssistant is on the Nextcloud App Store now
This post is an announcement that RecommendationAssistant is on the Nextcloud App Store now. Read how to download and install.
Software Engineering, Hacks and Solutions
Ever had the situation where you are testing little changes of a pre-tested code 'on the fly' & it is not working anymore?
Kotlin Cheat Sheet
I had to become familiar with the Kotlin programming language on short notice. This Cheat Sheet for Kotlin summarizes my learnings.
Comparing Objects with PHP
A brief summary of the problem how object comparison in PHP 7 does not work everytime as expected and how I fixed it using a workaround.