- Artykuły z tagiem C#

Różnica pomiędzy ?: a ?? w nawiązaniu do posta pod tytułem "Niezwykły operator ternarny ?: w C++". Dementujemy kłamstwa.

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Mylące operatory – Zagubiona wśród własnych myśli – Piatkosia's blog

Sztuka programowania 234 dni, 13 godzin, 2 minuty temu piatkosia 190 rozwiń

A few days ago when I posted the information about creating a course Becoming a software developer amongst many positive comments I had received at least a few question why would I do something like this for free. In the video below (English subtitles are available) I do present my answer. And I would also like to write a few additional remarks about it.

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Doing things pro publico bono | Piotr Gankiewicz

Inne 239 dni, 5 godzin, 33 minuty temu spetz 97 rozwiń

Welcome to the first, or actually, the episode number 0 of my first online course ever named “Becoming a software developer”. o what is it all about? The goal is simple – I’ll be acting as a mentor to a friend of mine Patryk Huzarski, who would like to become a software developer.

Tagi: .Net, .net core, C#, kurs
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Becoming a software developer – course introduction | Piotr Gankiewicz

Inne 243 dni, 16 godzin, 21 minut temu spetz 156 rozwiń

Tworzenie aplikacji na najświeższą platformę Windows (Universal Windows Platform) nie powinno sprawiać dużych problemów nawet początkującym osobom w tym temacie. Warto jednak już od pierwszych kroków wyposażyć się w ciekawy zbiór bibliotek od Microsoftu, który uprzyjemni pracę w UWP. Zróżnicowany zestaw pomocnych elementów znacznie usprawni programowanie na platformie Windows.

UWP Community Toolkit - niezbędnik dewelopera Universal Windows Platform

Narzędzia 249 dni, 9 godzin, 37 minut temu djfoxer 103 rozwiń

Nowadays, asynchronous programming isn’t something unusual. We all know that when it comes to do some I/O operations or HTTP request, we should do it async. Why? There’re several reasons but two most important  are:Efficiency. In many cases, the code might work faster. That’s because it’s not forced to wait for the result. Instead, it can work on some other stuff and then come back for the response when it’s ready. Simple is that.Comfort. Async improves the comfort of using our applications. We don’t blo...

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What lies beneath async/await in C# ? - Forever F[r]ame

Sztuka programowania 249 dni, 9 godzin, 37 minut temu dpawlukiewicz 306 rozwiń

Programowanie współbieżne – jeden z najbardziej zaawansowanych tematów programistycznych. Z jednej strony programowanie równoległe jest już standardem, z którym mają styczność (może w pewnym stopniu nieświadomie) nawet początkujący programiści. Z drugiej strony nadal tylko niewielu programistów potrafi pisać poprawny oraz efektywny kod współbieżny.

books#4 - "Programowanie równoległe i asynchroniczne w C# 5.0" -

Sztuka programowania 249 dni, 9 godzin, 37 minut temu AdrianBystrek 250 rozwiń

It’s been a few months already since I’ve started working for good with distributed systems using (micro)services and asynchronous processing via service bus. Many issues and question raised and one of these was how to not lose the information about commands and events being processed and even more importantly, how to notify the user once the request has completed? I’ve had to come up with some solution that seems to be sufficient (at least for now) and I’d like to share it with you.

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Async HTTP API and service bus | Piotr Gankiewicz

Architektura 250 dni, 13 godzin, 50 minut temu spetz 131 rozwiń

Reading time ~4 minutes This post is an analysis of a very interesting optimization proposed by Nicholas Frechette in the comments under the previous post. He proposed to use one of the oldest tricks in performance cookbook - divide and conquer. Well, it did not turn out as I expected.Saga Before I go further here are some link to the previous posts on the problem of calculating similarities and then optimizing. This thread grew to a few post. Here are all of them:How I calculate similariti...

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Dividing a bit in two for performance – IndexOutOfRange

Sztuka programowania 259 dni, 8 godzin, 47 minut temu maklipsa 78 rozwiń

Kilka słów o tym, że nie zawsze idzie poprawnie wyszpiegować co siedzi w binarce. Czasami kod znacznie odbiega od rzeczywistości i to bez użycia obfuskacji.

Tagi: C#, Ilspy
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Narzędzia 271 dni, 16 godzin, 4 minuty temu piatkosia 88 rozwiń

It’s been quite a while since I posted the latest update of the Warden project designed for monitoring the resources in general. After a lot of back-end coding and refactoring, the time has come to finally focus on the new web interface implementation. And this is where the things start to become interesting (I promise).

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Warden vNext | Piotr Gankiewicz

Narzędzia 273 dni, 18 godzin, 15 minut temu spetz 69 rozwiń

Visual studio simplifies creating of WCF service by providing project templates. First way to create WCF service is to use the New Web Site option and then choose WCF Service. It will create a new web site with a sample WCF service implementation linked to a .svc file, with related configuration in the web.config file. In this approach Visual Studio does not just create the core WCF project and add the needed assembly references, but it also builds the host application.

Tagi: .Net, C#, WCF
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Blog piwno-programistyczny: 70-487 Create a WCF Service part 3

Programowanie rozproszone 279 dni, 13 godzin, 19 minut temu markone 51 rozwiń

Very often WCF is translated to ABC which corresponds to basic WCF concepts such as: Address, Binding, Contract.

Tagi: .Net, C#, WCF
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Blog piwno-programistyczny: 70-487 Create a WCF Service part 2

Programowanie rozproszone 283 dni, 18 godzin, 32 minuty temu markone 30 rozwiń

Reading time ~1 minute This will be a fast errata to the previous one. This time I will expand the oldest performance mantra: The fastest code is the one that doesn’t execute. Second to that is the one that executes once Last time I’ve forgot to mention one very important optimization. It was one of two steps that allowed me to go from 1530 to 484 seconds in the sample run.Saga Before I go further here are some link to the previous posts on the problem of calculating similarities and then...

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Independent code in performance optimizations – IndexOutOfRange

Programowanie rozproszone 283 dni, 18 godzin, 32 minuty temu maklipsa 46 rozwiń

Reading time ~6 minutes Last time I’ve shown how I’ve gone from 34 hours to 11. This time we go faster. To go faster I have to do less. The current implementation of Similarity iterates over one vector and checks if that ingredient exists in the second one. Since those vectors are sparse the chance of a miss is big. This means that I am losing computational power on iterating and calling TryGetValue. How to iterate only over the mutually owned ones and do it fast? Saga Before I go furth...

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Using bit masks for high-performance calculations – IndexOutOfRange

Sztuka programowania 280 dni, 18 godzin, 12 minut temu maklipsa 56 rozwiń

One thing that surprised me the most about the C# was the fact that it does not support multiple inheritances (which I knew from the C++). How can we deal with that? Of course, we use interfaces, since one class can implement more than one. But quickly we come to the very common problem...

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Using C# explicit interface implementation for hiding... - Forever F[r]ame

Sztuka programowania 278 dni, 16 godzin, 57 minut temu dpawlukiewicz 186 rozwiń

The first problem raised on the exam from WCF technology is Creating a WCF Service. Here are the subtasks for the problem: Create contracts (service, data, message callback, and fault);Implement message inspectors;Implement asynchronous operations in the service; First let's start from question what WCF is?

Tagi: .Net, C#, WCF
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Blog piwno-programistyczny: 70-487 [WCF] Create a WCF Service part 1

Programowanie rozproszone 284 dni, 7 godzin, 47 minut temu markone 121 rozwiń

Sometimes it happens that we use mechanisms/features of specific language without beeing aware of it. That’s fine, but if you’ll want to discuss your code in a future to the audience or coworkers, soon or later you’ll be forced to learn it and understand (or at least name it using technical nomenclature). Therefore, today I’m going to discuss two related „mechanisms” of C# which are covariance and contravariance.  Covariance Covariance is a type conversion from the specific type to the more general (ba...

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What are covariance and contravariance in C#? - Forever F[r]ame

Sztuka programowania 284 dni, 7 godzin, 47 minut temu dpawlukiewicz 184 rozwiń

Necessity is the mother of invention – that’s basically why I did create a new open source project called Lockbox. Its main purpose is to provide a centralized and secured storage for the application settings that can be easily fetched via HTTP request. Sounds interesting? Then let me guide you through the most important concepts of the Lockbox.

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Lockbox | Piotr Gankiewicz

Narzędzia 287 dni, 11 godzin, 43 minuty temu spetz 106 rozwiń

Today I’ll show you a quite nice example of the Strategy pattern from a real project I was working on some time ago.

Strategy design pattern - real life example -

Sztuka programowania 288 dni, 13 godzin, 40 minut temu AdrianBystrek 188 rozwiń

There are times that you need to call native (C/C++) code from .NET environment. To do so, you have several options: use C++/CLI, use P/Invoke mechanism, use some sort of inter-process communication like pipes, memory mapped files etc persuade yourself that it's gonna be easy to port this cool C/C++ library to C#. Shoot yourself in the head when trying to do it. We will discuss option 2.

Tagi: .Net, C#, pinvoke
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[EN] Passing struct array in struct via P/Invoke

Inne 294 dni, 16 godzin, 59 minut temu Krzysztof Zmorzyński 48 rozwiń

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