October 25, Pavia, Italy
November 6-8, Berlin, Germany
November 3-8, Kona, HI, USA
By Blog Staff | Nov 19, 2013 02:57 PM | Tags: None
A useful short nugget: override FTW!
C++11 Annoyance Avoiders
by Tony DaSilva
From the article:
I’ve always been torn as to whether or not to annotate derived class member functions intended to override base class members as
virtual...
By Blog Staff | Nov 19, 2013 09:47 AM | Tags: intermediate
What is this "type erasure" thing you speak of? It's not something at the other end of a pencil (remember those?) but a way to hold an object without knowing its exact type. Andrzej explains:
Type Erasure, Part 1
by Andrzej Krzemieński
From the article:
Have you ever came across term type erasure in C++? This “pattern” or “technique” is growing more and more popular. In this post I will try to describe what it is. Note that it is something different than a similar term in Java.
What does type encode?
Let’s start with describing the opposite of type erasure. We could call such situation “type-full-ness”. Forget the term though, let me illustrate what I mean with an example. ...
By Blog Staff | Nov 19, 2013 08:22 AM | Tags: basics
Quick A: There is, in C++14.
From SO:
Is there a way to use standalone std::begin and for a const_iterator?
I like consistency. I recently asked the question of using
std::beginvs. e.g.std::vector<int>::begin, and the unanimous decision seemed to be to use the former since it is more general. But I think I found a stick in the mud. Sometimes, you want to convey you will not change a container as you loop through it, hence callingstd::vector<int>::cbegin. It would make your code quite asymmetric if you sometimes diditer = v.cbegin()and other times diditer = begin(v). Is there a way around this lack of symmetry, and would you still recommendstd::begingiven this knowledge? Why does C++ not havestd::cbegin?
By Blog Staff | Nov 18, 2013 04:41 PM | Tags: intermediate basics advanced
Accompanying today's release of the VC++ CTP, there is a new talk by Stephan T. Lavavej available covering several major C++11 and draft C++14 features that are of likely interest to C++ developers using any compiler.
Core C++, 10 of n (Nov 2013 CTP)
by Stephan T. Lavavej
From the summary:
In part 10, STL explores the new features in the Visual C++ Compiler November 2013 CTP (Community Technology Preview), in addition to the features that were added between VC 2013 Preview and RTM.
Features included in the November CTP ( generic lambdas!!! Smiley ):
C++11, C++14, and C++/CX features:
- Implicit move special member function generation (thus also completing
=default)- Reference qualifiers on member functions (a.k.a. "
&and&&for*this")- Thread-safe function local static initialization (a.k.a. "magic statics")
- Inheriting constructors
alignof/alignas__func__- Extended
sizeofconstexpr(except for member functions)noexcept(unconditional)- C++14
decltype(auto)- C++14
autofunction return type deduction- C++14 generic lambdas (with explicit lambda capture list)
- (Proposed for C++17) Resumable functions and
await
By Blog Staff | Nov 18, 2013 03:26 PM | Tags: None
Microsoft has announced a new Visual C++ Compiler CTP (Community Technology Preview):
Announcing the Visual C++ Compiler November 2013 CTP
In addition to the ISO C++ features added in last month's Visual c++ 2013 full release, this CTP adds the following additional ISO C++11 and draft ISO C++14 features in preview form:
=default)& and && for *this")alignof/alignas__func__sizeofconstexpr (except for member functions)noexcept (unconditional)decltype(auto)await
The new CTP installs as a new toolset under the Visual C++ 2013 IDE, allowing editing and building using the new Visual C++ compiler through the current shipping IDE. As this is a CTP, however, there is not yet other IDE support, and so for example the IDE may display red squiggles on valid code that will actually compile and run, as shown in the accompanying screenshot which exercises a generic lambda function having an auto parameter. If you do not already have a copy of Visual C++ 2013 installed and would like a free copy, several versions of the Visual C++ 2013 Express optimizing compiler are available for free via the Visual Studio Downloads page.
By VZ | Nov 18, 2013 06:04 AM | Tags: None
A new stable release of wxWidgets, the open source C++ library for creating cross-platform GUI applications with native look and feel, is now available.
This 3.0 release is a culmination of several years of work since the previous stable 2.8 series and so brings many important improvements compared to it, such as:
webview library providing integration with the platform native HTML-rendering engine.propgrid and ribbon libraries.wxRichMessageDialog, wxInfoBar, wxCommandLinkButton, wxHeaderCtrl, wxRearrangeCtrl, wxTreeListCtrl, wxTimePickerCtrl, wxRichToolTip, wxBannerWindow, wxPersistentXXX and other classes.as well as a huge number of other new features and bug fixes.
More information is available at wxWidgets home page and in the online documentation.
By Blog Staff | Nov 18, 2013 03:04 AM | Tags: intermediate
Quick A: No, because the contents are const.
A classic from SO, recommended by a developer team that encountered this situation again in the past week:
initializer_list and move semantics
Am I allowed to move elements out of a
std::initializer_list<T>?#include <initializer_list> #include <utility> template<typename T> void foo(std::initializer_list<T> list) { for (auto it = list.begin(); it != list.end(); ++it) { bar(std::move(*it)); // kosher? } }Since
std::intializer_list<T>requires special compiler attention and does not have value semantics like normal containers of the C++ standard library, I'd rather be safe than sorry and ask.
By Blog Staff | Nov 14, 2013 03:22 PM | Tags: None
Well timed with the recent release of Boost 1.55, a new Reddit thread just highlighted two useful books about Boost:
The first book is available online, with a second edition released in print in 2011:
The Boost C++ Libraries
by Boris Schäling
Table of Contents
- Chapter 1: Introduction
- Chapter 2: Smart Pointers
- Chapter 3: Function Objects
- Chapter 4: Event Handling
- Chapter 5: String Handling
- Chapter 6: Multithreading
- Chapter 7: Asynchronous Input and Output
- Chapter 8: Interprocess Communication
- Chapter 9: Filesystem
- Chapter 10: Date and Time
- Chapter 11: Serialization
- Chapter 12: Parser
- Chapter 13: Containers
- Chapter 14: Data Structures
- Chapter 15: Error Handling
- Chapter 16: Cast Operators
The second, the subject of the Reddit thread, was this new release:
Boost C++ Application Development Cookbook
by Antony Polukhin
Overview
- Explores how to write a program once and then use it on Linux, Windows, MacOS, and Android operating systems
- Includes everyday use recipes for multithreading, networking, metaprogramming, and generic programming from a Boost library developer
- Take advantage of the real power of Boost and C++ to get a good grounding in using it in any project
Table of Contents
- Preface
- Chapter 1: Starting to Write Your Application
- Chapter 2: Converting Data
- Chapter 3: Managing Resources
- Chapter 4: Compile-time Tricks
- Chapter 5: Multithreading
- Chapter 6: Manipulating Tasks
- Chapter 7: Manipulating Strings
- Chapter 8: Metaprogramming
- Chapter 9: Containers
- Chapter 10: Gathering Platform and Compiler Information
- Chapter 11: Working with the System
- Chapter 12: Scratching the Tip of the Iceberg
By Meeting C++ | Nov 14, 2013 07:16 AM | Tags: intermediate conferences concurrency community c++14 c++11 boost basics advanced
The recent Meeting C++ 2013 was a blast, the 2nd Meeting C++ conference was with over 200 guests a full success!
Meeting C++ 2013
by Jens Weller
Additional Online Resources:
Stephen Kelly about CMake for Qt and Boost
The talks from Peter Sommerlad
Sven Johannsens HTML based talk about STL11 is online.
Available slides are linked in the talk descriptions.
By Hartmut Kaiser | Nov 13, 2013 04:25 PM | Tags: performance parallelism distributed computing concurrency c++14 c++11
The STE||AR Group at Loisiana State University has released V0.9.7 of HPX -- A general purpose parallel C++ runtime system for applications of any scale.
HPX V0.9.7 Released
The newest version of HPX (V0.9.7) is now available for download! Over the past few months...
From the announcement: