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I would like to get my hands dirty and start playing with a pet project to get into blockchain technologies.
Some time ago I read Mastering Bitcoin and now am looking for a concise intro into using blockchains. Perhaps something like the Decentralized Applications book (not published yet) book could be.
Any tips for books, articles, etc.?
Thanks!
If you are looking for books, try this link. If you are looking to do more of a hands on approach for learning how blockchain works. Try a sample application like this one here
try Microsoft Blockchain as a service, they have strato which has REST based APIs for easier development, it actually uses Ethereum framework
This is the best one I have come across in regards to building DApps with Ethereum. It is concise and straight to the point.
Book: Introducing Ethereum and Solidity: Foundations of Cryptocurrency and Blockchain Programming for Beginners
Author: Chris Dannen
Book Link
Github of the Author
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Im new to developing in alexa from amazon, right now i have everything setup and ready to go, but the main problem here is the c#. I cannot find anything good that explains the process, classes, methods, etc.
The only tutorials around really are in Node.js, or just give you clumps of code that no one seems to be able to explain. I have not found anything that even resembles an API for C#.
Does anyone have any info or directions for me to look in to get the info i require? I have been searching since last night and honestly can't find anything that explains in a good way?
Most of the documentation on Alexa is using Node.js samples. However, it is all backed by AWS Lambda which supports .NET Core and C# so writing a skill in C# should be more than possible.
Taking a look around, Matthias Shapiro as a blog post on getting a C# version of an Alexa skill up and running:
http://matthiasshapiro.com/DisneyShorts/alexa-audio-skill-in-c-net-core
Tim Heuer also has a good blog post including code on GitHub:
http://timheuer.com/blog/archive/2016/12/12/amazon-alexa-skill-using-c-sharp-dotnet-core.aspx
John, our company has just shared C# implementation of our Alexa skill (Sophtron) at https://github.com/sophtron/Alexa-Skill-Sophtron
It is a conversational skill with account linking. Also included is the code that validates the request. Hope it helps.
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I am a computer science student and I want to do a personal project demonstrating some skills that I have learned. Recently I learned how to use SQL with PHP. Since PHP isn't as relevant as it once was, I was hoping someone could point me towards a more commonly used back-end tool where I still interact with my database through SQL queries. In my question, I specifically asked about a C++ framework since I am most comfortable with C++, but if there are much more common frameworks for what I'm looking for that use Java or Python, that would work as well.
Doing a quick google search gave me a very very large list of potential frameworks, so I was hoping someone with more knowledge in the field can point me towards one that employers would find the most relevant.
On a side note, I was also wondering if a framework is completely necessary, or if I can create my back-end just using native c++? If so, is this a valuable skill to look into?
Thanks for the help.
check out QT for the C++ GUI & MySQL for the backend...
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Just read Douglas R. Schmidt’s paper on the reactor pattern and I'd like to see a good example actually implemented to clear some questions up. I spent some time searching for a fully implemented example but haven't been able to find one. If someone's already implemented this and is willing to share the code that would be greatly appreciated. Or, of course, a link to an example in C++ would be great as well.
You will find working examples of the Reactor pattern implementation in the, freely available, source of the ACE framework, developed by Douglas R. Schmidt: http://www.dre.vanderbilt.edu/~schmidt/ACE.html
In his book "C++ Network Programming, Volume 2: Systematic Reuse with ACE and Frameworks" Douglas R. Schmidt gives detailed explanation of the implementation of the Logger example project (included in ACE), both implemented as a Reactor and Proactor if I remember correctly - but I read the book a few years ago.
Look at Boost.Asio
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any websites, books etc. If someone would like to share their own experiences.
thank you
This is a free book which runs through some recurring tasks in computer vision and image processing.
Regarding the C++, you can take a look at OpenCV which is a computer vision library written in c/c++
I've had a lot of success with open-cv. I've done an effect similar to Adobe's "Magic Wand" tool.
http://opencv.willowgarage.com/wiki/
http://en.wikipedia.org/wiki/OpenCV
If you are interested in writing your own library you will need a pretty serious math background. The algorithms involved can be pretty intense.
There's a good list of simple image processing operators here, but really the best is to take courses in DSP and image processing.
Did some C image processing when I was in school.
I read this ebook. It was helpful.
http://homepages.inf.ed.ac.uk/rbf/BOOKS/PHILLIPS/cips2ed.pdf
Magick++ is a good API for image processing in C++, and has a tutorial(PDF).
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I'm learning DirectX as part of a hobby project. I've been looking for some good online resources for DirectX9 (using C++, if that distinction matters), but haven't found anything that's a) great for a beginner and b) up to date.
Any recommendations?
When I started using DirectX I found this to be the best resource around for basic stuff:
http://www.directxtutorial.com/
When you start reaching an intermediate level they want you to pay a subscription but all the good basic stuff is free. Tutorials are clear and literally step-by-step.
This is website is not bad at all either: http://www.toymaker.info/ - with some good project downloads.
If you have problems the best place to go in my experience is http://www.gamedev.net/ , they have great articles and forums with plenty of so-called gurus.
Toymaker
Triple Buffer
DirectX4VB
32Bits
Introduction to 3D Game Programming with DirectX 9: Not an online resource, but that book was very helpful to me.
There's also the DirecX SDK documentation, which should be your definitive resource.
Gamedev.net is probably a good place to look
CodeProject.com