Evgenii Legotckoi
Evgenii LegotckoiMarch 20, 2023, 5:17 p.m.

DjangoDjango - Lesson 062. How to write a block-template tabbar tag like the blocktranslate tag

template, Django 4, templatetags, Django, tag, Django 3

In this article, I'll show you exactly how you can write a simple block template tag, like the blocktranslate tag in Django .

These block template tags have an opening tag and a closing tag, and the most common one …

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Evgenii Legotckoi
Evgenii LegotckoiMarch 19, 2023, 9:56 a.m.

DjangoDjango - Tutorial 061. Adding a Unique View Count

Django, Counter, Django 3, python, Django 4

At the very beginning of creating articles and questions on the forum, I added a simple counter of views on this content.
This counter was an ordinary field of integer type and each time a page was requested it was …

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Evgenii Legotckoi
Evgenii LegotckoiMarch 18, 2023, 3:09 p.m.

DjangoDjango - Lesson 060. Speeding up a website with caching templates

cache, Django, Django 3, Django 4, model_cached_property, invalidate

One of the ways to significantly speed up the speed of a Django site is to cache both individual parts of the site templates and cache the templates after they are compiled by the site. Therefore, we will study both …

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Дмитрий
ДмитрийDec. 10, 2022, 12:50 p.m.

QtHow to open image with correct orientation with Qt tools

QImageReader, поворот изображения при загрузке, QImageWriter, поворот изображения, метаданные jpg

Some popular image formats (like jpg) may contain metadata. One of them is rotation. If you create the file in a graphics editor, then rotate it in the viewer, and finally load it into your application using the QImage, QPicture, …

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Evgenii Legotckoi
Evgenii LegotckoiOct. 16, 2022, 2:58 p.m.

Djangodjango_model_cached_property - Caching property for individual model objects in Django

cache, model_cached_property, invalidate, redis, Python 3, Django

Introducing the release of the stable battery django_model_cached_property for caching property for individual model objects in Django.

I already said that evileg_core contains similar functionality, but now I decided to bring this caching into a separate package. This is due …

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Дмитрий
ДмитрийSept. 7, 2022, 1:40 p.m.

C++Engineering solution of a cubic equation using Vieta's trigonometric formula

кубическое уравнение, unique_ptr, компьютерная математика, полиномиальное уравнение, тригонометрическая формула Виета

As you know, the solution of the cubic equation has been known since the 16th century. However, even today, engineers can face a problem in solving it. This complexity is due to the need to extract the root from complex …

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Evgenii Legotckoi
Evgenii LegotckoiSept. 5, 2022, 2:45 a.m.

DjangoAnalysis of errors in the development and promotion of a site on Django - Custom tag<cut>

development, Django, Custom

And now some thoughts on the topic of custom tags, and whether they should be introduced at all.

The short answer is NO.

Now let's think about this topic - "Why?" . There is such a well-known Russian-language resource Habr, …

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Evgenii Legotckoi
Evgenii LegotckoiSept. 2, 2022, 5:06 a.m.

DjangoAnalysis of errors in the development and promotion of a site on Django - Multilingual forms

forms, Мультиязычноть, Django, Translations

With this publication, I would like to start sharing my observations after almost seven years of supporting the EVILEG project. So that every newbie could roughly understand and imagine whether it is worth doing a similar or different functionality or …

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sonia jessica
sonia jessicaJune 21, 2022, 2:34 a.m.

JavaJava Array Programs

Java, Interview

Arrays in java:

  • An array is the basic Data Structure that contains items of similar data types.
  • There is always an ordering amongst the position of the element.
  • It can be accessed with the help of the indices. Java supports …
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Evgenii Legotckoi
Evgenii LegotckoiJune 13, 2022, 4:15 a.m.

C++Leet Code Solutions - 003 - Longest Substring Without Repeating Characters

cpp, LeetCode, C++, C++17, string

Solution "Longest Substring Without Repeating Characters" on Leet Code


class Solution {
public:
    int lengthOfLongestSubstring(string s) {
        string candidate_str = "";
        string checking_str = "";
        size_t position = std::string::npos;
        for (auto& ch : s)
        {
            position = checking_str.find(ch);
            if (position …
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Evgenii Legotckoi
Evgenii LegotckoiJune 13, 2022, 3:13 a.m.

C++Leed Code Solutions - 002 - Add Two Numbers

LeetCode, cpp, C++

Solution "Add Two Numbers" on Leet Code


/**
 * Definition for singly-linked list.
 * struct ListNode {
 *     int val;
 *     ListNode *next;
 *     ListNode() : val(0), next(nullptr) {}
 *     ListNode(int x) : val(x), next(nullptr) {}
 *     ListNode(int x, ListNode …
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Evgenii Legotckoi
Evgenii LegotckoiJune 13, 2022, 2:58 a.m.

C++Leet Code Solutions - 001 - Two Sum

cpp, LeetCode, C++

Two Sum solution on Leet Code


The simple solution

class Solution {
public:
    vector<int> twoSum(vector<int>& nums, int target) {
        for (int i = 0; i < nums.size(); ++i)
        {
            for (int j = i + 1; j < nums.size(); ++j) …
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СЦ

C ++ - Test 004. Pointers, Arrays and Loops

  • Result:50points,
  • Rating points-4
AT

C++ - Test 001. The first program and data types

  • Result:73points,
  • Rating points1
m

C++ - Test 002. Constants

  • Result:58points,
  • Rating points-2
Last comments
АН
Алексей НиколаевMarch 26, 2023, 9:10 a.m.
Qt/C++ - Lesson 042. PopUp notification in the Gnome style using Qt Добрый день, взял за основу ваш PopUp notification , и немного доработал его под свои нужды. Добавил в отдельном eventloop'e всплывающую очередь уведомлений с анимацией и таймеро…
АН
Алексей НиколаевMarch 26, 2023, 9:04 a.m.
Qt/C++ - Lesson 042. PopUp notification in the Gnome style using Qt Включите прозрачность в композит менеджере fly-admin-theme : fly-admin-theme ->Эффекты и всё заработает.
NSProject
NSProjectMarch 24, 2023, 2:35 p.m.
Django - Lesson 062. How to write a block-template tabbar tag like the blocktranslate tag Да не я так к примеру просто написал.
Evgenii Legotckoi
Evgenii LegotckoiMarch 24, 2023, 10:09 a.m.
Django - Lesson 062. How to write a block-template tabbar tag like the blocktranslate tag Почитайте эту статью про "хлебные крошки"
NSProject
NSProjectMarch 24, 2023, 9:15 a.m.
Django - Lesson 062. How to write a block-template tabbar tag like the blocktranslate tag Хорошая статья. И тут я подумал что на её основе можно отлично сформировать "хлебные крошки". Самое простое распарсить адрес. Так и поступил бы но лень
Now discuss on the forum
P
PisychMarch 29, 2023, 5:35 a.m.
Как подсчитать количество по условию? большое спасибо. завтра проверю. сейчас уже нет возможности:(
Evgenii Legotckoi
Evgenii LegotckoiMarch 29, 2023, 4:11 a.m.
Замена поля ManyToMany Картинки точно нужно хранить в медиа директории на сервере, а для обращения использовать ImageField. Который будет хранить только путь к изображению на сервере. Хранить изображения в базе данных…
ВА
Виталий АнисимовJan. 29, 2023, 3:17 p.m.
Как добавить виртуальную клавиатура с Т9 в своей проект на QML. Добрый день. Прошу помочь, пишу небольше приложение в Qt. Добвил в свой проект виртуальную клавиатуру от Qt. Но как добавить в него возможность изменения Т9 никак не могу понять.
P
PisychMarch 16, 2023, 12:23 a.m.
Как записать значение даты в Input date? Уппс! нашел ошибку. Тема закрыта
Evgenii Legotckoi
Evgenii LegotckoiMarch 15, 2023, 5:08 a.m.
Почему не работает редирект? Добрый день! Через Ajax редирект и не будет работать. Вам нужно вернуть JsonResponse и обработать его в на клиентской стороне в скрипте вызов Ajax. То есть вызвать редирект в этой фун…

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