Django → Django - Tutorial 032. Advanced search options

Django, Search

The site has functional, thanks to which you can ask a question on the forum with an article on the site to which this question relates in one way or another. This is done through external keys from the topic …

C++ → The Pimpl Programming Pattern - What You Should Know

C++, Pimpl

Basics

You may come across the Pimpl template under other names: d-pointer, compiler firewall, or even Cheshire Cat template or opaque pointer.

In its main form, the template looks like this:

• In a class, we move all private members to …

Qt → Development on Qt for iOS

ios, qt

Preamble

The most democratic country in the world has created the most totalitarian operating system. Therefore, if you want to test your software on an iPad or IPhone, you must register with https://developer.apple.com/ as a developer. At the first stage, …

Qt → Qt Cloud Messaging API available for embedded systems

Cloud, Messaging, QML

Problems with cloud messaging for embedded devices inspired the Kaltiot & SnowGrains teams to create a cross-platform Qt API that makes it easy to send messages from embedded devices. The API is called Qt Cloud Messaging API and is built …

Django → Django - Tutorial 031. Change URL without reloading the page with partial content loading

Django, URL, JavaScript

The less information a site has to transmit to each request, the better. Because we get less load on the server and on the communication channel. The first such improvement on the site I did was loading the list of …

JavaScript → JavaScript - How to extract a parameter from a URL

JavaScript, URL

During the development of the site, small tasks arise, for example, how to extract a parameter from the URL.

For example, we have a URL like this:

http://www.example.com/?page=24&info=13

The parameters in this case are page and info .

To solve …

Django → Django - Tutorial 030. Opportunities VDS server for $ 5 for the project on Django

Ubuntu, Django, VDS

With the growth of site functionality, as well as attendance, it was possible to successfully test the capabilities of the current VDS server, which I currently use. I would like to describe my experience with VDS, as well as show …

C++ → C ++ - Tutorial 012. static_assert, checking for errors at compile time

C++11, static_assert

Exceptions are thrown during the execution of the program; if the error can be found at compile time, you can use static_assert , which tells you to correct the program code in key locations.

The use of static_assert will look …

Django → Django - Tutorial 029. Adding private messages and chats on the site - Part 1

чат, message, Django, chat, сообщение

According to the tradition, I will tell you about my experiences on the introduction of new functionality on the site. At the moment, this functionality is a personal message between users. Of course, this now does not work as well …

Qt → Idiom "type erasure" on the example of QWidget

Type erasure idiom

The article assumes that the reader has basic knowledge of C++

Straight to the point.

Suppose you need to dynamically (like me, on button click) change the text
several objects such as:

1. QLabel
2. QPushButton
3. QLineEdit

Most of …