This is where the reader probably asks:

The C++ Core Guidelines’ Lifetime Profile, which is part of the C++ Core Guidelines, aims to detect lifetime problems, like dangling pointers and references, in C++ code. It uses the type information already present in the source along with some simple contracts between functions to detect defects at compile time with minimal annotation.

• December 2018

(originally published on Medium)

Flutter provides a modern react-style framework, rich widget collection and tooling, but there’s nothing similar to Android’s guide to app architecture.

Indeed, there’s no ultimate architecture that would meet all the possible requirements, yet let’s face the fact that most of the mobile apps we are working on have at least some of the following functionality:

1. Request/upload data from/to the network.
2. Map, transform, prepare data and present it to the user.
3. Put/get data to/from the database.

Taking this into account I have created a sample app that is solving exactly the same problem using three different approaches to the architecture.

Introduction

If you have dabbled into microchip photographing before, then this article will probably not offer much to you. But if you want to get into it, but don’t know where to start, then it’s exactly for you.

Before we start, a fair warning: while the procedure is quite entertaining, at first it’ll probably be physically painful. The chemicals used during the process are toxic, so please handle them carefully – that way it’ll still hurt, but less so. Also, if you have even a slight amount of common sense, conduct the procedure in a fully-equipped chemical laboratory under supervision of trained professionals: we’ve had to deal with people who tried to do it at home immediately after reading the guide. And finally: if you don’t know whether you need to pour acid into water or water into acid without a Google search and don’t realize what this lack of knowledge will entail – stop reading this immediately and go to a chemistry 101 course in a local college or something.

Hi. My name is Michael Kapelko. I've been developing software professionally for more than 10 years. Recent years were dedicated to iOS. I develop games and game development tools in my spare time.

Overview

Today I want to share my experience of teaching kids to program. I'm going to discuss the following topics:

• organization of the learning process
• learning plan
• memory game
• development tools
• lessons
• results and plans

(originally published on Medium)

I like writing React code. This might be an odd introduction to a story about Vue, but you need to understand my background to understand why I’m here discussing Vue.

I like writing React code and I hate reading it. JSX is a neat idea for assembling the pieces together fast, Material-UI is amazing solution for bootstrapping your next startup’s UI, computing CSS from JS constants allows you to be very flexible. Yet reading your old JSXs feels awful – even with scrupulous code review practices you might scratch your head not once as you try to figure the intricate nesting of the components.

I’ve heard many things about Vue—the not so new kid on the block—and I finally decided to get my feet wet; bringing in all my mental luggage of React and Polymer (and Angular, but let’s not talk about that).

This article contains a brief squeeze from my own experience and that of my colleagues, with whom I had been fighting incidents day and night. And many incidents would never have occurred if all these microservices that we love so much were written at least a little more carefully.

Unfortunately, some programmers seriously believe that a Dockerfile with any team at all inside is a microservice in itself and can be deployed even now. Dockers are running — money are incoming. This approach turns into problems starting from performance degradation, inability to debug, service failures and ending in a nightmare called Data Inconsistency.

If you feel that the time has come to launch one more app in Kubernetes / ECS / whatever, then I have something to object to.

Swift 5 for Xcode 10.2 beta

Swift

Apple Swift version 5.0 (swiftlang-1001.0.45.7 clang-1001.0.37.7)
Target: x86_64-apple-darwin18.2.0
ABI version: 0.6

Swift apps no longer include dynamically linked libraries for the Swift standard library and Swift SDK overlays in build variants for devices running iOS 12.2, watchOS 5.2, and tvOS 12.2. As a result, Swift apps can be smaller when deployed for testing using TestFlight, or when thinning an app archive for local development distribution.

Visual Studio 2019 Preview 2 is out! And with it, a couple more C# 8.0 features are ready for you to try. It’s mostly about pattern matching, though I’ll touch on a few other news and changes at the end.

Hi, I'm one of the developers of the sharded blockchain Near Protocol, and in this article want to talk about what blockchain sharding is, how it is implemented, and what problems exist in blockchain sharding designs.

It is well-known that Ethereum, the most used general purpose blockchain at the time of this writing, can only process less than 20 transactions per second on the main chain. This limitation, coupled with the popularity of the network, leads to high gas prices (the cost of executing a transaction on the network) and long confirmation times; despite the fact that at the time of this writing a new block is produced approximately every 10–20 seconds the average time it actually takes for a transaction to be added to the blockchain is 1.2 minutes, according to ETH Gas Station. Low throughput, high prices, and high latency all make Ethereum not suitable to run services that need to scale with adoption.