August 4, 2019 at 10:20 PM
July 28, 2019 at 11:12 PM
July 8, 2019 at 09:59 AM
July 3, 2019 at 09:39 AM
inb4: This is not another "setting up" a new project with Vue and TypeScript tutorial. Let's do some deep dive into more complex topics!
typescript is awesome. Vue is awesome. No doubt, that a lot of people try to bundle them together. But, due to different reasons, it is hard to really type your Vue app. Let's find out what are the problems and what can be done to solve them (or at least minimize the impact).
July 1, 2019 at 09:52 AM
June 23, 2019 at 11:37 PM
June 18, 2019 at 11:53 AM
JavaScript has been ruling the tech arena for more than two decades and helping developers simplifying complex tasks. It allows developers to implement complex task web pages in a most simplified manner. For most of the developers minified JavaScript file is the common phenomena while very few developers may be aware of Optimized JavaScript code. While meeting through many Javascript developers, I have come to know that Optimized JavaScript code is something that confuses developers, some of them might be doing it, but they are not aware of this.
When combinations of uniquely programmed logics along with small hacks utilized to enhance performance and speed is known as Optimized JavaScript code. Optimization not only optimizes performance and speed but also saves maximum development time. When you save time, you save some bucks as well.
So, I am here with some useful and fruitful hacks to help developers optimize performance, enhance speed and save time. Hope, you like the article and after going through it, you may utilize the best of Optimized JavaScript code.
June 16, 2019 at 10:55 PM
June 13, 2019 at 05:38 PM
From time to time, developers need to establish communication between several browser tabs to be able to send messages from one tab to another and receive responses. We have also faced this need at some point.
Some solutions already exist (like, for instance, BroadcastChannel API). However, its browser support leaves a lot to be desired, so we decided to use our own library. When the library was ready, that functionality was no longer required. Nevertheless, another task emerged: communication between an iframe and the main window.
On closer examination, it turned out that two-thirds of the library would not have to be changed — only some code refactoring was necessary. The library is a communication PROTOCOL that can work with text data. It can be applied in all cases in which text is transferred, such as iframes, window.open, worker, browser tabs or WebSocket.
Currently, the protocol has two functions: sending messages and subscription to events. Any message in the protocol is a data object. For us, the main field in that object is type, which tells us what kind of message it is. The type field is an enum with the following values:
June 10, 2019 at 12:00 AM
June 5, 2019 at 06:23 AM
QueryProvider can’t deal with this:
var result = _context.Humans
.Select(x => $"Name: {x.Name} Age: {x.Age}")
.Where(x => x != "")
.ToList();It can’t deal with any sentence using an interpolated string, but it’ll easily deal with this:
var result = _context.Humans
.Select(x => "Name " + x.Name + " Age " + x.Age)
.Where(x => x != "")
.ToList();The most painful thing is to fix bugs after turning on ClientEvaluation (exception for client-side calculation), since all Automapper profiles should be strictly analyzed for interpolation. Let’s find out what’s what and propose our solution to the problem.
June 2, 2019 at 11:18 PM
May 26, 2019 at 11:17 PM
May 19, 2019 at 11:38 PM
May 16, 2019 at 10:11 PM
Here is tree with 3 levels to start your journey as web developer.
May 12, 2019 at 11:12 PM
May 5, 2019 at 10:57 PM
const decoded = jwt.verify(
token,
publickRSAKey,
{ algorithms: ['HS256' , 'RS256'] } //accepted both algorithms
)//header
{
alg: 'RS256' => 'HS256'
}
//payload
{
sub: '123',
name: 'Oleh Khomiak',
admin: 'false' => 'true'
}
This article assumes that readers are familiar with OAuth 2. However, below a brief description of it is presented below.
The are some main Pros and Cons in OAuth 2.0
— No signature (relies solely on SSL/TLS ), Bearer Tokens
— No built-in security
— Can be dangerous if used from not experienced people
— Too many compromises. Working group did not make clear decisions
— Mobile integration (web views)
— Oauth 2.0 spec is not a protocol, it is rather a framework — RFC 6749
