October 25, Pavia, Italy
November 6-8, Berlin, Germany
November 3-8, Kona, HI, USA
By Marco Arena | May 25, 2015 07:11 AM | Tags: intermediate
Time for refactoring functional code! Bartosz Milewski concludes his intriguing journey about the application of Monads in C++.
Using Monads in C++ to Solve Constraints: 4. Refactoring
by Bartosz Milewski
From the article:
In this installment I’d like to talk about something that a lot of functional programmers swear by: Functional programs are amazingly easy to factorize.
By Adrien Hamelin | May 25, 2015 06:35 AM | Tags: intermediate
Acting In C++
by Anthony DaSilva Jr
From the article:
Because they’re a perfect fit for mega-core processors and they’re safer and more enjoyable to program than raw, multi-threaded, systems, I’ve been a fan of Actor-based concurrent systems ever since I experimented with Erlang and Akka (via its Java API). Thus, as a C++ programmer, I was excited to discover the “C++ Actor Framework” (CAF). Like the Akka toolkit/runtime, the CAF is based on the design of the longest living, proven, production-ready, pragmatic, actor-based, language that I know of – the venerable Erlang programming language...
By Adrien Hamelin | May 25, 2015 06:19 AM | Tags: intermediate experimental
Here is a video of Eric Niebler presenting a future C++:
by Eric Niebler
From the video:
With concepts and ranges coming, big changes are in store for the Standard Library and for the style of idiomatic C++. The effort to redefine the Standard Library is picking up pace. Come hear about one potential future from one of the key people driving the change. In this talk, Eric works through a tricky example and shows an elegant solution rooted both in yesterday's STL and tomorrow's. He will speak briefly about where we are in the process to reinvent and reinvigorate the Standard Library.
By Marco Arena | May 18, 2015 10:33 AM | Tags: intermediate
Bartosz Milewski continues to explain how to use Monads in C++.
Using Monads in C++ to Solve Constraints: 3. The Tale of Two Monads
by Bartosz Milewski
From the article:
The functional solution to our problem involves the combination of the list monad and the state monad. Mashing two monads together is not trivial — in Haskell this is done using monad transformers — but here I’ll show you how to do it manually...
By Marco Arena | May 15, 2015 06:02 AM | Tags: performance intermediate
First part of a discussion about designing a type storing character strings of length N (known at compile-time and sufficiently small).
Handling short codes - part I
by Andrzej Krzemieński
From the article:
In my work, we often deal with codes [...] The initial choice was to represent them in programs by type std::string, a general-purpose type for storing sequences of characters. But, as with any general-purpose tools, they fail to take into account the particular usage cases which often offer room for improvements [...] The following is an attempt at the design of a type that would take advantage of the information that we are only storing character strings of length N, where N is sufficiently small (say, no longer than 8)...
By Marco Arena | May 14, 2015 11:49 PM | Tags: intermediate
Bartosz Milewski continues to explain how to use Monads in C++.
Using Monads in C++ to Solve Constraints: 2. The State Monad
by Bartosz Milewski
From the article:
We all like making plans, but they are often contingent on the state of our finances. Such plans can be described by functions. In general, a financial plan is a function that takes cash and returns the result paired with the new value of cash. It can be described generically using a template...
By Felix Petriconi | May 11, 2015 01:18 PM | Tags: intermediate
Bartosz Milewski starts to explain Monads in his recent article.
Using Monads in C++ to Solve Constraints: 1. The List Monad
by Bartosz Milewski
From the article:
I am sometimes asked by C++ programmers to give an example of a problem that can’t be solved without monads. This is the wrong kind of question — it’s like asking if there is a problem that can’t be solved without for loops. Obviously, if your language supports a goto, you can live without for loops. What monads (and for loops) can do for you is to help you structure your code. The use of loops and if statements lets you convert spaghetti code into structured code. Similarly, the use of monads lets you convert imperative code into declarative code. These are the kind of transformations that make code easier to write, understand, maintain, and generalize.
So here’s a problem that you may get as an interview question. It’s a small problem, so the advantages of various approaches might not be immediately obvious, especially if you’ve been trained all your life in imperative programming, and you are seeing monads for the first time.
By Adrien Hamelin | May 8, 2015 08:00 AM | Tags: intermediate boost
While we wait for CppCon 2015 in September, we’re featuring videos of some of the 100+ talks from CppCon 2014. Here is today’s feature:
How you can make a Boost C++ Library
by Robert Ramey
Summary of the talk:
The purpose of this presentation is to encourage C++ programmers to create and submit new quality C++ libraries to Boost.
Premises: a) C++ needs more quality libraries b) There are many C++ programmers who would like to contribute libraries but they are discouraged by the amount of effort and associated heartache.
Methodology: Walk through the website www.blincubator.com from the point of view of a C++ library contributor. It will address issues related to requirements, suggested tools, user feedback, library promotion. It will assume that the attendee is an intermediate to advanced C++ programmer with an idea for a library.
By Adrien Hamelin | May 4, 2015 08:00 AM | Tags: intermediate community
An interesting post on interesting librairies:
5 awesome C++ libraries we use
by Edouard
From the article:
This is an opinionated post about five libraries we use in the production code of quasardb.
We of course use many more great libraries (for example Boost.ASIO which is not listed here). Maybe those five libraries are not the most important, but I felt they deserved some special highlight as they are not so well-known or understood...
By Marco Arena | Apr 30, 2015 12:48 AM | Tags: intermediate concurrency
A new blog post containing runnable code from the Italian C++ Community:
Serializing access to Streams
by Marco Foco
From the article:
Two or more threads were writing to cout using the form:
cout << someData << "some string" << someObject << endl;And one of the problems was that data sent from one thread often interrupted another thread, so the output was always messed up. [...] I started designing a solution by giving myself some guidelines, here listed in order of importance...