Qt → Creating a command line on Qt Creator using the QProcess class

Qt, QProcess, командная строка

With the QProcess class, you can create your own command-line console. To do this, just create the application with a GUI and mark the QLineEdit and QTextEdit (lineEdit and textEdit) objects on the main window to write a query and …

Career and business in IT field → EVILEG - Celebrating 2 years and summing up the results

EVILEG, 2 года

Настал знаменательный день! Ресурс EVILEG празднует два года со дня своего основания - 28 июня 2015 года.

Два года назад был зарегистрирован первый домен ресурса EVILEG в зоне RU, поднят сайт на Wordpress и началась работа над статейными материалами.

Примерно …

Django → Django - Tutorial 025. A set of useful batteries Django

Battery, tagging, Framework, Django, ckeditor, REST, django-bootstrap3

The convenience of developing on Django is not only that it is already a developed Framework with rich functionality, but also the availability of a large number of high-quality batteries (packages) that implement the necessary functionality that it would be …

Linux → Configuring HTTPS from Let`s Encrypt with Certbot

LetsEncrypt, Ubuntu, Nginx, HTTPS, SSL, HTTP

Some time ago, the SSL certificate from Let`s Encrypt ceased to be updated on the site. Judging by the mistakes, the structure of the files for organizing the keys has changed somewhat. After researching the problem, the easiest option was …

Qt → Qt/C++ - Tutorial 067. Using QMultiMap for a dictionary of synonyms

Qt, QMultiMap, QTableView, QStandardItemModel

QMultiMap is a class inherited from QMap, which allows you to store multiple values for a single key. That is, the key can be repeated. This class can be used, for example, to represent a dictionary of synonyms.

Let's write …

C++ → C++ - Tutorial 004. Tests and loops

C++, while, for, do, break, continue, if, else

C++ provides a standard set of operators for selecting a selection and cycles.

The keywords related to the construction of branching conditions for the code are:

• if
• else
• switch
• case
• break
• default

The key words relating to the construction of …

Qt → Qt/C++ - Tutorial 066. Uploading files to an FTP server

Qt, QNetworkAccessManager, FTP

To work with the network in Qt 5 , the Network module is used, and for data transmission over the network, you can actively use the QNetworkAccessManager class if you do not create your own protocol for data transfer. But …

C++ → C++ - Tutorial 003. Constants

C++, const, constexpr

C =++ supports two notations of immutability:

1. const - which implies that the value will not change. First of all, this is used to specify interfaces, for data that is passed to functions and methods so that they are not …

PostgreSQL → Correcting the client encoding of the PostgreSQL database from LATIN1 to UTF8

PostgreSQL, Django, LATIN1, UTF8

On the site there was one bug that manifested itself when trying to attach to files messages whose names were in Cyrillic. In this case, the site issued error 503. This occurred despite the fact that the database was encoded …

C++ → C++ - Tutorial 002. Types, Variables and Arithmetic

C++, int, char, double, auto, nullptr

Each variable or expression has its own data type, for example, an declaration

int some_variable;

Indicates that the variable some_variable has an integer type int .

The declaration allows you to enter a variable in the program. This variable will …