Setting GitHub actions is a headache, and it takes time to run correctly. I’ll share what actions I daily use. ... Read More

a product of Aksoft Studios [aksoftstudios@gmail.com] I recently started creating my own mobile product — I had an idea ... Read More

React Native has become increasingly popular over the years, and I wanted to learn the basics of this framework. To get ... Read More

To install IPA file on iPhone device, use Apple Configurator app How to use it? Connect your iPhone into M... Read More

I was recently working on an android app, and one of the features required me to build a custom UI component. In this po... Read More

This is a double-checked locking singleton implementation without the volatile keyword. What’s wrong with it? class Foo ... Read More

Security topics are common interview question. I summarized what is Certificate, Provisioning, Code Signing, App Transpo... Read More

I turned 40 and got layoff on April fools day. It’s not a success story but I want to share my iOS interview ex... Read More

✍️ Note What is Core Animation Core Animation use bitmaps. UIView -> Layer -> Bitmap -> Hardware... Read More

In this post, I’ll share how to build socket application. Project Structure I created a workspace and put t... Read More

✍️ Note Some codes and contents are sourced from Udemy. This post is for personal notes where I summarize t... Read More

Did you know Apple provides Sample Code? I learned App Architecture from Apple’s Sample Projects. In this post,... Read More

✍️ Note Some codes are sourced from Loony Corn’s Udemy Course (https://www.udemy.com/user/janani-ravi-2/). This ... Read More

Sort algorithm in Swift Foundation is TimSort (Insertion Sort + Merge Sort) I wrote posts about Insertion Sort and Me... Read More

Find the least common ancestor. UIView is a tree data structure. Each node (UIView) can have multiple subviews. To fi... Read More

Forward compatibility and backward compatibility sometimes are confusing Here are their definitions from Wikipedia: For... Read More

✍️ Note Some codes are sourced from Holczer Balazs’s Udemy Course (https://www.udemy.com/course/algorithms-and-d... Read More

✍️ Note Some codes are sourced from Loony Corn’s Udemy Course (https://www.udemy.com/user/janani-ravi-2/). This ... Read More

✍️ Note Some codes and contents are sourced from Apple, WWDC and BigMountStudio. This post is for personal ... Read More

The sliding window is a very common technique to optimize subarray problems. I have solved similar problems many times, ... Read More

✍️ Note Some codes and contents are sourced from Udemy. This post is for personal notes where I summarize t... Read More

✍️ Note Some codes and contents are sourced from Udemy. This post is for personal notes where I summarize t... Read More

✍️ Note Some codes and contents are sourced from Apple’s official documentation. This post is for personal notes... Read More

✍️ Note Some codes and contents are sourced from Apple’s official documentation. This post is for personal notes... Read More

✍️ Note Some codes and contents are sourced from Udemy. This post is for personal notes where I summarize the or... Read More

✍️ Note Some codes and contents are sourced from Apple’s official documentation, google android official site an... Read More

✍️ Note Some codes and contents are sourced from Apple’s official documentation, educative.io and mozilla. This ... Read More

✍️ Note Some codes and contents are sourced from Apple’s official documentation. This post is for personal notes... Read More

✍️ Note Some codes are sourced from Loony Corn’s Udemy Course (https://www.udemy.com/user/janani-ravi-2/). This ... Read More

✍️ Note Some codes and contents are sourced from The Clean Code Blog official documentation, The iOS Interview G... Read More

✍️ Note Some codes and contents are sourced from Apple’s official documentation. This post is for personal notes... Read More

✍️ Note Some codes and contents are sourced from Apple’s official documentation. This post is for personal notes... Read More

✍️ Note Some codes are sourced from Loony Corn’s Udemy Course (https://www.udemy.com/user/janani-ravi-2/).... Read More

✍️ Note Some codes are sourced from Loony Corn’s Udemy Course (https://www.udemy.com/user/janani-ravi-2/).... Read More

✍️ Note Some codes and contents are sourced from Apple’s official documentation. This post is for personal notes... Read More

✍️ Note Some codes and contents are sourced from Apple’s official documentation. This post is for personal notes... Read More

✍️ Note Some codes and contents are sourced from Apple’s official documentation. This post is for personal notes... Read More

✍️ Note Some codes and contents are sourced from Apple’s official documentation. This post is for personal notes... Read More

✍️ Note Some codes and contents are sourced from Apple’s official documentation. This post is for personal notes... Read More

Handling String How to access character? You can’t access character by integer. You should use st... Read More

✍️ Note Some codes and contents are sourced from Apple’s official documentation. This post is for personal notes... Read More

✍️ Note Some codes and contents are sourced from Apple’s official documentation. This post is for personal notes... Read More

https://en.wikipedia.org/wiki/Model%E2%80%93view%E2%80%93viewmodelModel: Business logic, Data model View: UI presentatio... Read More

✍️ Note All the codes and contents are sourced from Apple’s official documentation. This post is for personal n... Read More

Some codes and contents are sourced from Apple’s official documentation. This post is for personal notes where I summari... Read More

Some codes and contents are sourced from Apple’s official documentation. This post is for personal notes where I summari... Read More

Useful Foundation APIs swapAt swap the value in an array by passing the index Bubble Sort func bubbleSort(... Read More

✍️ Note All the codes and contents are sourced from Apple’s official documentation. This post is for personal n... Read More

✍️ Note All the codes and contents are sourced from Apple’s official documentation. This post is for personal n... Read More

Download Leetcode official app Did you know leetcode has an official iOS app? You can download it. But there is on... Read More

Choosing a server can be challenging, especially if you’re not a backend engineer but still need one for your iOS ... Read More

In this article, I will elaborate on how touch events are dispatched and handled in the Android view tree. The article c... Read More

I built an practice app based on this tutorial: https://www.jetbrains.com/help/kotlin-multiplatform-dev/multiplatform-kt... Read More

I asked my self Is python worth to learn for iOS development? My answer is Yes. Because I can use it for Build s... Read More

Have you faced the missing dSYM issue? You can fix it by uploading dSYM to firebase. Official Document Build Sett... Read More

1. Download firebase macOS tool https://firebase.google.com/docs/cli#mac-linux-standalone-binary 2. Copy firebase-... Read More

For me, DP problem is the most challenging problem when I faced it during the interview process. To understand it I summ... Read More

DTO(Data Transfer Object) is used to pass data between systems or layers while maintaining a clear and structured repres... Read More

In this post, I’ll share sample code for implementing MasonryLayout using UICollectionViewCompositionalLayout. ... Read More

It’s very simple. I used this Highlight SPM Sample Code // // ContentView.swift // Button // // Created by Sun... Read More

This post is about project setup for full stack swift developer. It is the same as WWDC 2022 – Use Xcode for serve... Read More

No more put ‘No test notes’ at Test Flight No test notes. It’s not clear what to ... Read More

Check App Version using xcodebuild Update ci_scripts/ci_post_xcodebuild.sh CURRENT_PROJECT_VERSION=$(xcodebuild -projec... Read More

Today I attended Apple office in Singapore to test Vision Pro. Office is located in One North. From my office to here It... Read More

This post might be helpful if you are considering using the typeText function for validating user input using regular ex... Read More

Recently I faced an issue with compile -O for product build. I assumed that It caused by dead function issue. I reported... Read More

At City Commuter App, we are committed to protecting the privacy of our users. This privacy policy explains the types of... Read More

Optimization Level Swift compiler has 3 optimization options (link) -O for product code -Onone for development... Read More

I’ve been using AWS to host my Vapor Swift server, but currently, there’s no traffic as I am just running th... Read More

SwiftUI Preview crashed Preview Crashed logs are saved at “~/Library/Logs/DiagnosticReports“ ... Read More

At nativeMobile, we are committed to protecting the privacy of our users. This privacy policy explains the types of info... Read More

Our UI creation rule was creating a UI programmatically. But recently, we changed it. Now our iOS team can create UI dep... Read More

Introduction It was good to be back attending talks at Droidcon Singapore this year. The last time I was here was back i... Read More

Introduction Kotlin Multiplatform Mobile (KMM) is a technology developed by JetBrains (https://www.jetbrains.com/) that ... Read More

I wrote about How to deploy Vapor App(Server-Side-Swift) to the AWS This post is about setting on a local server using D... Read More

A guide on how to setup A/B tests on Android to help improve user experience Background Our team was tasked with improvi... Read More

Introduction My attempt at building the interpreter from the book Crafting Interpreters, where the author walks us throu... Read More

I was asked What is Struct and Class? Could you explain it? It’s the most common interview question. I summarized ... Read More

Overview There are only three steps. I tested these steps using the playground app.   ... Read More

Overview   Create AWS Certificate To support HTTPS, We need to create a certificate. I&#... Read More

This post will write about Docker, AWS ECR, ECS, Fargate, RDS, and Github Action. Contents Overview Getting Start AWS ... Read More

In this post, I’ll explain the life cycle of UIViewController. What happens when you create the UIViewController? ... Read More

In this tutorial, you’ll learn how to separate logics from view and to deal with user input on UITextField by making the... Read More

In this post, I’ll share useful English resources for Software Engineer. I struggled to express my thought to... Read More

Sometimes You need to use the older version of Swift for preparing the interview. For example, The Codility doesn’t supp... Read More

This post is concise, but useful to represent the formatted address from CLPlacemark. The CoreLocation provides the loca... Read More

In this post, I’ll introduce useful shortcut keys to boost your productivity. I know it’s hard to remember... Read More

In this post, I’ll write about Calendar to get the date you want. You can get the specific time and dates like midnight,... Read More

I attended the try! Swift Tokyo 2019, which is my first attending iOS conference. I was very excited. I’ll share my exp... Read More

I wrote a Behind the scene of delightful animation it is about Animation patterns in modern iOS Apps. In this post, I’ll... Read More

In this post, I’ll share how to display the temperature with unit using the MeasurementFormatter. MeasurementFormatter ... Read More

I had presented about iOS animations at LetSwift conference last year. I classified the animations by researching the mo... Read More

Default UITextView has text insets, unlike the UILabel. How to remove the insets on UITextView like an UILabel? ... Read More

Last month I made the Table library. I inspired by javascript console.table.   What is the Table? The Table is a ... Read More

In Xcode 11, the scroll view has two new things, which are the Content Layout Guide and Frame Layout Guide. It’s a very... Read More

The coding interview is hard because We have to remember the basic data structures and algorithms. For me, I received ma... Read More

When you create the custom view with xib and then set the custom view on Storyboard but if It has not appeared. How can ... Read More

Let’s enabling syntax highlighting for Swift The Squarespace supports syntax highlighting for HTML, CSS, and Javascript.... Read More

Photo by rawpixel on UnsplashHi again. In this post I thought of sharing a simple architecture I’ve been using to handle... Read More

Layouts and views can be defined in one of two ways: via XML or programatically. Either way, the system will still need ... Read More

Flutter (https://flutter.io) is a new mobile SDK which can be used to build beautiful UI applications for cross platform... Read More