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Performance Tips for Android’s ListView

I've been messing around with Android-based code for a few months now while hacking on Native Firefox for Android and Pattrn. I noticed that the performance tips for ListViews are a bit scattered in different sources. This post is an attempt to summarize the ones I found most useful.



I'm assuming you're already familiar with ListViews and understand the framework around AdapterViews. I've added some Android source code pointers for the curious readers willing to understand things a bit deeper.
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Difference between TDD, BDD and ATDD

TDD

Test driven development is a particular approach to writing code where the tests are written at the same time as the code and involves constant refactoring. Because of its association with XP, TDD is historically associated with the unit test level. However, it is possible to apply it at other levels of testing (such as functional E2E level testing).

TDD tools are traditionally unit testing and mocking tools such as ​​ JUnit and ​​ JMock.

BDD

Behaviour Driven Development can be seen as an extension of TDD. The key enhancement with BDD is the introduction of a domain specific language that is very accesible to business users. BDD will typically be more at the functional test level as that is natural outcome of working with a business focused language.

The most commonly used BDD tool by far is Cucumber.

ATDD

With acceptance test driven development the focus is verifying work is done by passing acceptance tests. As it is dealing with acceptance tests it will usually be at the functional test …

Configuring ASP.NET Core Applications in Azure App Service

The .NET Core framework has a nice robust configuration framework. You will normally see the following (or something akin to it) in the constructor of the Startup.cs file: This version gets its settings from JSON files and then overrides these settings with things from environment variables. It seems ideal for Azure App Service because all
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Setting up Hangfire in an ASP.NET Web API Application

If you want to run some background tasks inside your ASP.NET Web API application, I strongly suggest you have a look at Hangfire. You don't need a separate Windows Service or anything, you can just spawn the task within the Web API. Having said that, Hangfire gives you extended functionality to run your background task as a Console Application or as a Windows Service. For the persistence storage for the tasks, Hangfire uses SQL Server, MySQL, Redis etc.
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HOW TO KEEP YOUR STYLE CODE CLEAN IN SWIFT

You've just finished your new app, and you go to show it off to a friend, and they say "Those red buttons look kind of harsh. What if you changed them all to be blue instead?" Your heart sinks, especially if you're using xibs or storyboards. It's going to take a while to go through them all and update the colors.
It's even harder if you're working with a designer since they have a real stake in wanting the app to look perfect. They will want to tweak the colors, fonts and overall look of the app until it looks just how they envisioned it. Neither of you can afford to have it take 30 minutes of coding between every small tweak that needs to be made. You need a way to update the style of the app quickly, easily and completely. You don't want to have one accidentally red button in an app full of blue ones. Like the rest of your code, you want the look and feel of the app to be something that can be controlled all from one place, where you can update it on…

Safely unboxing the swift language : Map function

Map is a function that converts a collection into another collection. It applies a transformation operation to each element in the input collection, and outputs a collection of the transformed elements.
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iOS : Smooth Scrolling in UITableView and UICollectionView

As most iOS developers know, displaying sets of data is a rather common task in building a mobile app. Apple's SDK provides two components to help carry out such a task without having to implement everything from scratch: A table view (UITableView) and a collection view (UICollectionView). Table views and collection views are both designed to support displaying sets of data that can be scrolled. However, when displaying a very large amount of data, it could be very tricky to achieve a perfectly smooth scrolling. This is not ideal because it negatively affects the user experience. As a member of the iOS dev team for the Capital One Mobile app, I've had the chance to experiment with table views and collection views; this post reflects my personal experience in displaying large amounts of scrollable data. In it, we'll review the most important tips to optimize the performance of the above mentioned SDK components. This step is paramount to achieving a very smooth scrolling expe…