October 25, Pavia, Italy
November 6-8, Berlin, Germany
November 3-8, Kona, HI, USA
By Blog Staff | Apr 28, 2015 11:05 AM | Tags: intermediate
Quick A: Enable more asynchrony and buffering. Boost can help.
Recently on Quora:
How can I minimize the runtime of the following loops: ... ?
int j=0; while (j <n) { int i = 0 ; while (i<m) { cout<<" ("<<i<<","<<j<<")"<<endl; i++; } j++; }
From the first answer:
... That's 16 times faster than the first version.
By Adrien Hamelin | Apr 24, 2015 09:05 AM | Tags: intermediate efficiency
String’s interface
by Andrzej Krzemieński
From the article:
What I have to say today is fairly obvious, and you probably know about it. But because I have observed the following pattern in my project’s code fairly frequently, I feel it needs to be recorded...
By Adrien Hamelin | Apr 24, 2015 08:00 AM | Tags: intermediate c++14
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:
STL Features And Implementation Techniques
by Stephan Lavavej
Summary of the talk:
This session will cover selected STL features from C++11/14, both explaining how to use them and delving into implementation techniques that could be useful outside the STL.
I will avoid covering popular features you're already using (e.g. make_shared, make_unique) and obscure features of limited use (e.g. forward_list). The focus will be on useful but underappreciated features like dual-range algorithms, minimal allocators, and heterogeneous associative lookup.
By Meeting C++ | Apr 24, 2015 01:30 AM | Tags: intermediate gcc experimental c++14 c++11 basics
The release of GCC 5.1 is a highlight, here is an overview on the most important new things:
The C++ highlights of GCC 5.1 and more
by Jens Weller
From the article:
Just recently, GCC 5.0 has been released as GCC5.1, the not only the newest version of GCC, but also bumping up the version number from 4 to 5. This release is a major milestone for GCC, but also for C++, as it brings full C++14 support, but yet not C++11(std=c++11) as the new default...
By Blog Staff | Apr 23, 2015 08:33 AM | Tags: intermediate
A solid and entertaining treatment with good C++ examples:
Coupling and Cohesion
by Paul Watt
From the middle of the article:
... To further clarify this statement, not all code should be reused.
Why Not?
Because the majority of software that is written is designed to fulfill a very specific purpose. The challenge is to find the balance point between generic reusable building blocks, and a tool or application that meets a need. Generic software components are very valuable, however, they are almost useless by themselves...
And gems like this:
... For every statement of code that you write or use, you should ask the question: Does this add value or risk?
By Adrien Hamelin | Apr 22, 2015 08:00 AM | Tags: intermediate c++14
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:
Exception-Safe Code, Part III
by Jon Kalb
Summary of the talk:
Are you 100% confident that your code is exception-safe?
Safe usage of exceptions is a non-trivial problem that the industry has struggled with for the better part of two decades. If you have fear, uncertainty, or doubt about exception safety or just want to see the best practices for using exceptions in C++ and/or C++11/14, this session is for you. We’ll start with “What is the problem we are trying to solve?” and discuss alternatives, acknowledge the challenges associated with exception usage, and cover some well-meaning but misguided attempts at safety. I will then present a set of guidelines that are the basis for safe exception usage and solid implementation techniques, including how to transition from an exception-unsafe legacy code base.
When we are finished you will know how to produce code that is easier to write, easier to understand, faster, and 100% robust in the face of exceptions.
By Adrien Hamelin | Apr 20, 2015 01:45 PM | Tags: intermediate c++14
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:
Exception-Safe Code, Part II
by Jon Kalb
Summary of the talk:
Are you 100% confident that your code is exception-safe?
Safe usage of exceptions is a non-trivial problem that the industry has struggled with for the better part of two decades. If you have fear, uncertainty, or doubt about exception safety or just want to see the best practices for using exceptions in C++ and/or C++11/14, this session is for you. We'll start with "What is the problem we are trying to solve?" and discuss alternatives, acknowledge the challenges associated with exception usage, and cover some well-meaning but misguided attempts at safety. I will then present a set of guidelines that are the basis for safe exception usage and solid implementation techniques, including how to transition from an exception-unsafe legacy code base.
When we are finished you will know how to produce code that is easier to write, easier to understand, faster, and 100% robust in the face of exceptions.
By Marco Arena | Apr 18, 2015 07:19 AM | Tags: intermediate c++11
A post on three common pitfalls regarding initializer_list...or not?
Don't blame initializer_list prematurely
by Marco Arena
From the article:
“Cannot convert initializer list argument to ‘int*'”. People started trying to figure out why initializer_list was not covertible to int[]. [...] A gentleman spotted the following in the dark corners of the codebase:
vector<YahtzeeGame> games; games.push_back(make_tuple(5, 6, 2)); games.push_back(make_tuple(5, 6, 3)); games.push_back(make_tuple(5, 6, 4)); // other stuffExcited about C++11, he tried to refactor:
vector<YahtzeeGame> games = { {5, 6, 2}, {5, 6, 3}, {5, 6, 4} };
And does it compile? ...
By psfrolov | Apr 17, 2015 07:49 PM | Tags: intermediate c++11 boost
This article shows how modern C++ features, notably variadic templates and perfect forwarding, can be used to implement a generic variant of observer pattern without the help of either macros or proprietary compiler extensions.
Making Boost.Signals2 More OOP-Friendly
by Pavel Frolov
From the article:
The observer design pattern is by far the most popular and widely known among behavioural patterns. Unfortunately, unlike other mainstream languages out there, the C++ standard library doesn’t provide out of the box observer implementation. Luckily, Boost contains Signals2, a signal/slot library which can serve as a basis for an observer. Using Signals2 as it is, however, is not so convenient in object-oriented program due to the need of manually coded register and notify class methods for each of signal/slot pairs. This article suggests an observable mixin which attempts to solve the outlined problem.
By Adrien Hamelin | Apr 17, 2015 08:00 AM | Tags: intermediate c++14
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:
Exception-Safe Code, Part I
by Jon Kalb
Summary of the talk:
Are you 100% confident that your code is exception-safe?
Safe usage of exceptions is a non-trivial problem that the industry has struggled with for the better part of two decades. If you have fear, uncertainty, or doubt about exception safety or just want to see the best practices for using exceptions in C++ and/or C++11/14, this session is for you. We'll start with "What is the problem we are trying to solve?" and discuss alternatives, acknowledge the challenges associated with exception usage, and cover some well-meaning but misguided attempts at safety. I will then present a set of guidelines that are the basis for safe exception usage and solid implementation techniques, including how to transition from an exception-unsafe legacy code base.
When we are finished you will know how to produce code that is easier to write, easier to understand, faster, and 100% robust in the face of exceptions.