Ruby → User Guide #28 - Ruby - Nuts and bolts

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This chapter addresses a few practical issues.

Statement delimiters

Some languages require some kind of punctuation, often a semicolon (

;

sh

Ruby → User Guide #27 - Ruby - Object initialization

Ruby, ruby lesson, ruby уроки, user guide, руководство пользователя

Our Fruit class from the previous chapter had two instance variables, one to describe the kind of fruit and another to describe its condition. It was only after writing a custom

inspect

Ruby → User Guide #26 - Ruby - Accessors

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What is an accessor?

We briefly discussed instance variables in an earlier chapter, but haven't done much with them yet. An object's instance variables are its attributes, the things that distinguish it from other objects of the same class. It …

Ruby → User Guide #25 - Ruby - Exception processing: ensure

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There may be cleanup work that is necessary when a method finishes its work. Perhaps an open file should be closed, buffered data should be flushed, etc. If there were always only one exit point for each method, we could …

Ruby → User Guide #24 - Ruby - Exception processing: rescue

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An executing program can run into unexpected problems. A file that it wants to read might not exist; the disk might be full when it wants to save some data; the user may provide it with some unsuitable kind of …

Linux → Top 10 Developers and Companies contributing to the Linux kernel in 2015-2016

Linux, 25 лет, Linux Kernel

Сообщество ядра Linux закрыло год установлением нового рекорда по числу изменений влитых в один релиз, по сравнению с предыдущим отчётом разработки Linux Kernel .

В версии ядра 4.6 можно увидеть около 13,517 патчей влитых за 63 дня, что равно рекорду, …

Qt → От Visual Studio Add-In к Qt VS Tools (Beta)

Add-in, Qt VS Tools

It's been almost three years since the last official release of the Qt Visual Studio Add-in , but now the Qt developers are coming up with something new: Qt VS Tools. The beta version can be downloaded from Qt Downloads …

Qt → Qt/C++ - Lesson 053. Building IBASE SQL driver Qt 5.7 on openSUSE Leap 42.1

FireBird, SQL, Leap, Qt, IBASE, openSUSE

Installing Qt 5.7 on openSUSE Leap 42.1

Download the latest version of Qt in Linux:

wget http://download.qt.io/official_releases/online_installers/qt-unified-linux-x64-online.run

Making the file executable

chmod +x qt-unified-linux-x64-online.run

Install gcc, make, and other necessary libraries:

sudo zypper install --type pattern devel_basis

Next, install the …

Ruby → User Guide #23 - Ruby - Class constants

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A constant has a name starting with an uppercase character. It should be assigned a value at most once. In the current implementation of ruby, reassignment of a constant generates a warning but not an error (the non-ANSI version of …

Qt → Qt WinAPI - Lesson 004. QtIFW - Automation WinDeployQt and build installers with Qt Installer Framework

Qt, QtIFW, Qt Installer Framework, windeployqt

Correct programmer - it is a lazy programmer. If you can automate something, you definitely need to do this. For example, it can be run automatically with the collecting windeployqt online and offline installers, as well as the preparation of …

Qt → Qt/C++ - Lesson 056. Connecting the Boost library in Qt for MinGW and MSVC compilers

Qt, MSVC, Boost, MinGW

Initial acquaintance with Boost on Windows start to build precompiled libraries and connecting them to the project on Qt. This code will use one of the Hello World-s from the Boost documentation, namely the installation locale using boost.

Building Boost …

QML → Game on QML - Lesson 1. Games arena and dynamic objects

JavaScript, QML, Qt, динамические объекты, игровая арена

After the first experience of writing games on Qt for Android, I want to share this experience together and offer to write a simple game in the style of "kill the mole." This is a game in which you need …