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 In the previous part of this post, you have learned how to write your own Widget. Now, you are going to add possibility to persisting notes in database. You will also learn about navigation and dependency injection.
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Flutter is a multi platform, open source, and free framework for creating mobile applications, created by Google. It is very easy to learn and currently it is getting more and more popular. With this blogpost you will learn some basic stuff about Flutter, and after reading it, you will be able to create a simple application using this technology.
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There is a massive number of applications available on the App Store these days, and every single one of them looks different. Despite that, there’s one thing that most applications have in common: lists. From the early days, iOS developers had access to the famous UITableView and used it a lot. UITableView, however has some major limitations. It has to be vertical, and there’s not a lot you can customise in the layout.
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Previously, I talked about making first steps with Sinatra, how to prepare and configure everything to get the app running similarly to Rails. This time, I’m going to show you how to make the app as full-stack, so you could use it instead of Rails.
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Welcome to the five-part series of blog posts about SOLID Principles. In each part, I will describe and analyze one of these principles. In the last part, expect a summary of the entire series containing a few tips and thoughts.
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5 steps to make your iOS app more secure

Security is an important thing. Not only for financial apps, but for all. You should always keep it in mind. I'd like to introduce you 5 steps that are easy to do, but make your iOS app more secure.
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Some time ago, I had a chance to build a very small app handling HTTP requests coming from Slack. I decided to choose a lightweight framework, so I skipped Rails in favour of Sinatra. In this blog post, I would like to help you out with the first steps toward using something different than Rails, but from the perspective of a Rails developer. Why? Well, a lot of Ruby developers might be called Rails developers because the only framework they have ever used is Rails. As you can see here, there are many other web frameworks for Ruby, and I’m pretty sure that most of them sound strange to you. Let me introduce Sinatra!
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In our previous article from the Pragmatic iOS Development series, we discussed the Model View Controller pattern and why (in my opinion, unrightfully) it is criticised within the community. I also mentioned two things about selecting perfect architecture for your project. The first thing was that there’s no happy medium that fits all of the use cases. Secondly, in the last sentence of the article, I gave a sneak peek of the architecture you’re going to fall love with, MVA. But there’s one thing I lied about: that there’s no architectural approach you can fit to any project you can think of. The truth is, such approach exists. And hey, good news: we’re going to focus on it today, and I’m going to tell you how to take advantage of this approach.
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The word ‘startup’ has become very popular these days. So many of us have had an idea for a great product for a long time in their minds, but only a few have decided to do something more with them. There are many reasons behind this lack of activity, however, one of the most popular reasons is that we don’t have the skills in a particular area. Today, I would like to tell you my story, where two students with no knowledge of a field decided to create a prototype of their idea and participate in the Nordic Semiconductor Student Contest. Those students decided not to create something that looks like a real product, but something that really works.
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MQTT (the acronym that, apparently, shouldn’t be expanded to Message Queue Telemetry Transport anymore) is a communication protocol focused on energy efficiency, data-transfer minimization, and assurance of delivery. These three qualities make it the perfect choice for any Internet of Things projects where the Internet connection is given but can be unreliable. Definitions aside, we can use MQTT for:
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