Published in Geek Culture·PinnedJava: Interesting and Cool Tricks👉 1 >> Java String concat() Vs the + Operator for ConcatenationJava7 min read
Published in Geek Culture·PinnedReact Native: Unable to load script: index. android.bundle1. Identify the problems 👉 Step 1: I am using React Native version 0.63.2 like below, and I want to build an android app by using Fastlane for CI/CD integration.Reactnative4 min read
PinnedJava, Kotlin: HashMap Under the hood?Definition Java HashMap class is an implementation of Map interface based on hash table. It stores elements in key & value pairs which is denoted as HashMap<Key, Value> or HashMap<K, V>. It extends AbstractMap class, and implements Map interface and can be accessed by importing java.util package. …Java5 min read
Apr 5⚡️ eKYC Solution — for you, for me, and for our life!Hey guys, today I will introduce to you a topic that is quite popular in The Industrial Revolution 4.0. A solution for Finance, Banking, and wealth. This is eKYC. From a technical point of view, because I’m an Android Developer. With this detailed article, I hope you can understand the…Ekyc7 min read
Published in Geek Culture·Dec 28, 2021Top greatest programmers of the world all time?1. Dennis RitchieProgrammer13 min read
Published in Level Up Coding·Dec 27, 2021Coding Challenge: First Missing Positive 🔥🔥🔥Problem: Given an unsorted integer array nums, return the smallest missing positive integer. You must implement an algorithm that runs in O(n) time and uses constant extra space. Example 1: Input: nums = [1, 2, 0] Output: 3 Example 2: Input: nums = [3, 4, -1, 1] Output: 2 Example 3: …Leetcode4 min read
Published in Geek Culture·Dec 27, 2021Overview of data warehouse and Business Intelligence⚡️Overview of Data Warehouse A data warehouse (DW) is a repository that stores relational data that is organized, cleansed, and standardized for enterprise use. A data warehouse is organized by subject-oriented databases and is non-volatile in direct support of decision support system (DSS) functionality. In so doing, a data warehouse includes strategically selected data…Datawarehouse8 min read
Published in Geek Culture·Nov 27, 2021Idiomatic Kotlin: Sealed classes and Sealed Interfaces in 2022⚡1. ️Why Sealed?Kotlin7 min read
Published in Geek Culture·Nov 1, 2021Android: Server polling operations with RxJava.⚡️ Overview A very common case is when the application interacts with the server to ensure that the server has completed the task or not, of course, combined with delay. Sometimes we need to repeat the check a few times to make sure our data is up to date and retry when…Android4 min read
Published in Geek Culture·Oct 25, 2021Principles: Mindset of Clean Code — Be a Better Programmer“One difference between a smart programmer and a professional programmer is that the professional understands that clarity is king. Professionals use their powers for good and write code that others can understand.” ― Robert C. Martin, Clean Code: A Handbook of Agile Software Craftsmanship ⚡️Overview Code is clean when it is…Clean Code6 min read
