Entwicklung - net4VISIONS Blog

net4VISIONS Blog

Entwicklung

A collection of 21 posts

C++ IDE Visual Studio Code on Linux

C++ IDE Visual Studio Code on Linux

After installing the required tools, there is preferably an IDE for developing the C++ code and building projects. Have a look at https://code.visualstudio.com/! The RPM repository is ... zypper ar "https://packages.microsoft.com/yumrepos/vscode/vscode-yum.repo" Afterwards zypper in code. My C++ workspace uses

Installing C++ Development Tools

Installing C++ Development Tools

Continuing on my C++ journey from some days ago... I am currently using OpenSUSE Linux Leap 15.5. After some consideration I decided to go for GCC version 14 from the devel:/gcc-repo: zypper ar -p 101 "https://download.opensuse.org/repositories/devel:/gcc/openSUSE_Leap_15.5/devel:

Lovely collection of .gitignore

Lovely collection of .gitignore

Maybe you know the GitHub repository already. But at github/gitignore there is lovely collection of .gitignore files for every context you might look for.

Simple task-thread-pool

Simple task-thread-pool

This simple task-thread-pool for Rust is for tasks like shearing sheeps. It uses a limited amount of threads from the pool to handle every task implementing trait TaskRunner. Threads will be reused if there are more tasks available. It is using crate log to log errors, debugs and traces. //! Simple

Cool new VS Code debug feature in v1.86

Cool new VS Code debug feature in v1.86

In version 1.86 VS Code got a really nice and welcome new feature for debug sessions. How often I had to disable debug break points because I don't want to break 1 million loops before the 1 interesting is coming. And then enable the breaks just in

Be careful with mixing TypeScript and JavaScript

Be careful with mixing TypeScript and JavaScript

In TypeScript you can use the same private class features like in JavaScript since ES2021. So far so good. Depending on the compiler options target during compiling TS to JS there might be added some generated JS-code to handle private-fields in JS and this needs to be remembered when modifying

Website Kfzgutachter Online

Website Kfzgutachter Online

Die Websites des Kfzgutachters/Kfzsachverständigen Klügl sind online. Neben Landingpages zur lokalen und regionalen Kundeninformation (wie https://www.ingolstadt-kfzgutachter.de oder https://www.ingolstadt-kfzsachverständiger.de) gibt es auf der Website https://www.kfzgutachter-klügl.de die Möglichkeit Aufträge per Formular zu vergeben. https://www.kfzgutachter-in-ingolstadt.de https://www.kfzgutachter-kluegl.de https:

My Advent of Code in Rust

My Advent of Code in Rust

This December I code the really funny Advent of Code (AoC) puzzles using the Rust compiler language. The half is over It is Mon, December 13th and the first half of puzzle pairs is over. Today I had to provide some coding solution to fold Origami to a paper, seeing

Rocket with local git checkout

Rocket with local git checkout

At the moment you should start development with the Rust Rocket framework at the 0.5-RC versions. There has been many changes to the latest stable 0.4 version and the new release is awaited soon. To stay up-to-date at the release cycle I think it is a good idea

Donaukurier Sudoku 07/14/2021

Donaukurier Sudoku 07/14/2021

For winning 25€ in the Sudoku of our newspaper Donaukurier there is a chance up to midnight. ;-) I've optimized my rsudoku application to be as fast as 0.006 seconds to solve the Donaukurier Sudoku from the last post.

Daily Sudoku of Donaukurier cracked

Daily Sudoku of Donaukurier cracked

I'm currently fiddling around with a Sudoku puzzle solver implemented in Rust language. At the moment it needs some more optimizing in handling very difficult grid templates with an acceptable memory footprint. But it is fast enough for the daily Sudoku puzzle in our newspaper Donaukurier. After the

Permutate vector values

Permutate vector values

There is my Rust Playground to an iterative and the looping variants of vector permutation in Rust language. As known the iterative variant is a little bit faster.

Rustlings 4.4.0 exercises

Rustlings 4.4.0 exercises

A boring week started and I used the time for trying out Rustlings. These are small exercises to get you used to reading and writing Rust code. Quite interesting how this tool works and gives you some hints on features of Rust. Got it successfully finished in short time. >

Load your rusty Cargo

Load your rusty Cargo

There exist some comfortable must-have add-ons for the Rust programming language crate package manager Cargo. Check if you have them installed with command cargo --list! 1. cargo-audit Audit Cargo.lock files for crates with security vulnerabilities reported to the RustSec Advisory Database. 2. cargo-deny cargo-deny is a cargo plugin that

XFCE Tumbler patch

XFCE Tumbler patch

I'm using XFCE Desktop as my working/development environment. It is fast and has all features I need. Allmost... There is a thumbnail service called Tumbler which creates these neat thumbnail icons for image and pdf files and some more files with viewable content. To create these thumbnails

Warum man nicht zu kurze Variablen verwenden sollte

Warum man nicht zu kurze Variablen verwenden sollte

Gestern musste ich mich stundenlang auf die Suche im Netz nach einer Fehlermeldung von EclipseLink machen. Beim Aufruf von EntityManager.persist() in einem JUnit Test hieß es, dass meine Entity keine Entity wäre und ich kontrollieren sollte, ob ich die Klasse mit @Entity annotiert habe. Ja, natürlich hatte ich das.

Test von HTTPS Endpunkten mit hyper

Test von HTTPS Endpunkten mit hyper

hyper stellt eine schnelle HTTP Implementierung in Rust für Server und Clients zur Verfügung. Das Zusatz-Crate hyper-tls bringt die Implementierung von TLS mit. Aufsetzend auf die asynchrone Laufzeitumgebung Tokio benötigen wir für Tests auch das tokio crate. extern crate hyper; extern crate hyper_tls; extern crate tokio; use hyper::rt:

fn make_static_str<T>(s: T) -> &'static str where T: Into<String>

fn make_static_str<T>(s: T) -> &'static str where T: Into<String>

Die Überschrift ist zu kryptisch? Die Macht der Jedi sei mit dir! ;-) Es ist eine Rust Funktions-Definition. Damit können beliebige Strings in statischen Heap-Speicher gelegt werden und man bekommt eine Referenz darauf zurück. Allerdings muss man sich jetzt selber um's dropen des Speichers kümmern und das muss

Zugriff auf die Rust Dokumentation

Zugriff auf die Rust Dokumentation

Die Schleusen sind geöffnet, es regnet ohne Unterlass, der Sommer scheint entgültig vorbei. Herbst und Winter sind Lesezeit. In diesem Sinne zeige ich hier die Möglichkeiten auf die lokal verfügbare Rust Entwickler Dokumentation zuzugreifen. Dokumentation über rustup Mit Hilfe von rustup kann die Dokumentation lokal installiert werden. Dazu zunächst prüfen

ContentType Routing Filter in ActixWeb

ContentType Routing Filter in ActixWeb

Die Filterung in Resource und Router funktioniert in ActixWeb basierend auf sog. Predicates. Eigenes ContentTypeHeader Predicate implementieren So wird ein ContentTypeHeader Predicate implementiert. Das Predicate sorgt dafür, dass der HTTP Header Content-Type im Request vorhanden ist um von der Resource/Route behandelt zu werden. extern crate actix_web; use self:

Test einer Rust Actix Web Applikation

Test einer Rust Actix Web Applikation

Mit einem Integrations-Test können im TestServer die Endpunkte der realen Applikation getestet werden. Ein HTTP-POST-Request zum Endpunkt /tlsrpt könnte folgend aussehen.