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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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Git is the most popular version control system in the entire known universe. Somehow, I wasn’t part of this universe until about six months ago. In my last workplace, we got by using SVN. Looking back, I don’t even know why we chose SVN. Oh wait, I know – it was one of those things that belonged to the list of the company's long-running traditions, and nobody took the initiative to change it.
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On March 30, the long-awaited iOS 11.3 update was released, with support for basic PWA features on iPhones and iPads, such as service workers and app manifest files. Although it is great that these are finally supported, the user experience of Progressive Web Applications on iOS is still not perfect.
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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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Conditional Assignment Operator! The rules says: A ||= B assigns B to A only if A is nil or false So, what if A is actually nil or false? Should we care?
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During the last Netguru team dinner a friend showed me a neat feature of his fancy Samsung device - Gesture Control to Take a Selfie (detecting hand to take a selfie). For some time now I’ve been interested in machine learning and I thought of implementing this myself. To solve this problem I’ve used Object Detection API SSD MultiBox model using mobilenet feature map extractor pretrained on COCO(Common Objects in Context) dataset. Follow these steps to create a simple hand detection app and see the results of my experiment:
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The era of static websites has passed. Now users demand dynamic content and application like look and feel. Instead of constantly reloading the page and hitting F5, the page should adjust itself automatically. Many of this can be accomplished with simple asynchronous requests from javascript. But what if you want to update your app only when there is a new data available on the server?
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CloudKit as MBaaS

These days, almost every mobile application is connected to a server. Very frequently, companies decide to write their custom servers, but when your application doesn't need to run a complicated task on a server, maybe it is worth to use BaaS (Backend as a Service). Services such as Google Firebase or Microsoft Azure after a short configuration are able to provide backend that is enough to meet the needs of most applications. In this blog post, I'll try to present capabilities of Apple's BaaS, which is CloudKit. I will start with the three biggest advantages of CloudKit which are Initial configuration, Price and Security & Privacy.
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