Published in Geek Culture·PinnedMember-onlyJava: Interesting and Cool Tricks👉 1 >> Java String concat() Vs the + Operator for ConcatenationJava7 min readJava7 min read
Published in Geek Culture·PinnedMember-onlyReact 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 readReactnative4 min read
Published in Level Up Coding·PinnedMember-onlyJava, 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 readJava5 min read
Published in Geek Culture·Feb 13Member-onlyImage Template matching methods with Python using OpenCVBackground Template matching is a computer vision technique for finding areas of an image that are similar to a patch (template). A patch is a small image with certain features. The goal of template matching is to find the patch/template in an image. …Python10 min readPython10 min read
Published in Level Up Coding·Jan 26Member-onlyKotlin: Basic of Coroutines1. CoroutineScope Coroutine scope is a concept in the Kotlin programming language that defines a scope for a set of coroutines. It provides a way to organize and manage the lifecycle of coroutines, and allows for the cancellation of all coroutines within the scope when necessary. …Kotlin8 min readKotlin8 min read
Published in Level Up Coding·Jan 16Member-onlyAndroid: Problem with Time Interval when using UTC: System.currentTimeMillis()What is UTC? UTC is the main universal time keeping standard. It stands for Coordinated Universal Time. People use it to measure time in a common way around the globe. Since it is essentially being used interchangeably with GMT (Greenwich Mean Time) you could think of it as the timezone defined around the…Android4 min readAndroid4 min read
Published in Level Up Coding·Dec 30, 2022Member-onlyCropping Images in Python with PillowPython and Cartesian Coordinate SystemPython6 min readPython6 min read
Published in Geek Culture·Nov 13, 2022Member-onlyGoogle Staged Rollouts & App Store Phased Release: With Less Stress🔥 What Is Phased Release?Google6 min readGoogle6 min read
Published in Geek Culture·Jun 11, 2022Member-onlyIdiomatic Cryptography: PBKDF2, SHA, AESTable of content SHA HMAC HKDF Application References 🔥 SHA SHA stands for Secure Hash Algorithm: 1993 | SHA (SHA-0) (FIPS 180): Introduced by the National Security Agency 1995 | SHA-1 (FIPS 180–1) 160 bits: Developed by NIST (National Institute of Standards and Technology) 2002 | SHA-2 (SHA-224, SHA-256, SHA-384, SHA-512) (FIPS 180–2) 2005: SHA-1…Hash7 min readHash7 min read
Jun 3, 2022Member-onlySpringBoot: War Deployment with Heroku CLIHeroku is a cloud platform as a service supporting several programming languages. One of the first cloud platforms, Heroku has been in development since June 2007, when it supported only the Ruby programming language, but now supports Java, Node.js, Scala, Clojure, Python, PHP, and Go 🤔 Install the Heroku CLIHeroku4 min readHeroku4 min read
