Today I Learned

Today I Learned

A collection of concise write-ups on small things I learn day to day across a variety of languages and technologies. These are things that don't really warrant a full blog post.

Read more about why and how I started this at: https://hackernoon.com/today-i-learned-ok-technically-yesterday-65c64e1dcb6

55 TILs and counting...

You can check my TILs list here

Kotlin

• Safely accessing lateinit properties in Kotlin
• Constants in Kotlin
• Domain-Specific Language (DSL) using Kotlin
• Sealed Classes in Kotlin
• Inline Functions in Kotlin
• Variable Number of Arguments in Methods in Kotlin
• Launching Activities using Kotlin DSL
• The with() operator in Kotlin
• Asynchronous Calls in Koltin
• Operator Overloading in Kotlin

Gradle

• Gradle Dependencies using Auto Complete with Kotlin
• Gradle Dependencies using Google's Way
• Defining Constants in Gradle
• Gradle doesn't run because it can't find tools.jar in JRE
• Publishing Your Android Kotlin/Java Library on jCenter
• Where to get AAR file of any library?
• Adding Password Protected Maven Repository URL in Gradle
• Generate Navigation Direction Classes in Kotlin with Safe Args Plugin
• This version of Android Studio cannot open this project, please retry with Android Studio x.x or newer
• Forcing any dependency to be looked in any specific repository
• Displaying the Dependency Graph of whole project
• Debugging Deep Links of Your Android App

Android

• Difference between Build Type, Flavour, and Build Variant in Android
• Percentage Width/Height using Constraint Layout
• Go to Code Line from Logcat Output Line
• Closing All Actvities and Launching Any Specific
• Live Code Templates in Android Studio
• Adding Padding in Tabs in Android
• IntDef and StringDef in Android
• Creating Separate Modules for Debug And Release
• RecyclerView Scrolling Issue with NestedScrollView
• Add Logs without Code in Android
• Auto Sizing Text Views
• RecyclerView Item Margins and Padding
• Data Binding for Layout :clock330:
• Lots of Errors in Code but Still App Runs in Android Studio
• Combining Urdu String through Data Binding
• The requireActivity() and requireContext() example
• Encrypt/Decrypt Strings in Android
• Show/Hide Password in EditText
• Converting JSONObject to HashMap<>
• Multiple Runtime Permissions in Android without any library
• Customizing the Scroll Duration of ViewPager
• Nested scrollview automatically scrolls to bottom
• Gone Margins in Constraint Layout
• Enable/Disable Swipe of ViewPager or Swipeable ViewPager
• Android Oreo or later versions not loading URLs (cleartext traffic not permitted)
• How to Simulate Android Kill Process for Your Debug Apps?
• ConcatAdapter and GridLayoutManager Span Size
• Android 12 Deep Links Not Working

Jetpack Compose

• Ripple and Clickable Conflict in Jetpack Compose
• Passing Parcelable and Other Data in Navigation Compose :new:

Firebase

• Firebase Notifications in Background & Foreground

Unit and Instrumentation Testing

• Idling Registry for OkHttp

Inspiration

Inspired by jbranchaud/til and first learned from 7 Habits I Wish Every (Junior) Programmer Should Have.

Contributing

The best way you can contribute is to support the idea of keeping track of things you learned. Just create a public repo and start writing and sharing notes. This is way better than keeping them to yourself.