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Self Destructing Smart Contracts in Ethereum

Photo by Tanner Van Dera

Once a contract is created on the Ethereum blockchain it cannot be modified. Said another way - it’s written in stone. Updating your code is problematic … actually impossible Updating a smart contact can be a problem if you need to change the code …

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How to Migrate from Android-Job to WorkManager

How to Migrate from Android-Job to WorkManager

The WorkManager API was recently announced at Google I/O. The goal of this library is to help simplify the way we handle background work. Specifically, it lets you create a task and hand it off to WorkManager to run immediately or at a later time. …

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Handling Optional Errors using Kotlin Sealed Classes

Large seal. Or more likely a sea lion.

When calling a function which returns data, there is often the need to handle errors which might occur. This post details how to make use of Kotlin’s sealed classes to return one object which can represent the data you expected or an error. Let’s …

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Exploring the Android Navigation Architecture Component

At the last I/O we saw the introduction of Android Architecture Components, which since have been helping us to simplify the way in which we build our apps. Yesterday at this years I/O we saw 2 new additions to this collection of components, one of …

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