By Adrien Hamelin | Jan 4, 2016 09:01 AM | Tags: None
Quick A: they are the same
Recently on SO:
Quick Q: C++11 auto declaration with and without pointer declarator
The declarations are exactly equivalent.
autoworks (almost) the same as template type deduction. Putting the star explicitly makes the code a bit easier to read, and makes the programmer aware thatbar2is a pointer.
By Adrien Hamelin | Jan 4, 2016 08:55 AM | Tags: c++14 advanced
An interesting article:
A flexible lexicographical comparator for C++ structs
by Björn Fahller
From the article:
We've all hand crafted comparison operators for structs with many members, and we've all cursed the tedium. It's all right for equality comparison, but lexicographical ordering relations is a different story when there are more than two members.
Hopefully all C++ developers have by now learned about the std::tie()-idiom.
struct S { int a; int b; int c; }; bool operator<(const S& lh, const S& rh) { return std::tie(lh.a, lh.b, lh.c) < std::tie(rh.a, rh.b, rh.c); }
By Adrien Hamelin | Jan 4, 2016 06:29 AM | Tags: basics
A nice introduction to C++ exceptions:
Levels of Exception Safety
by Arne Mertz
From the article:
Exceptions are part of C++. They are thrown by the standard library classes, and sometimes even if we are not really using the standard library. So, unless we are in a very restrictive environment like embedded programming and have exceptions disabled in the compiler, we need to be prepared and deal with the fact that exceptions simply can happen.
By Blog Staff | Jan 2, 2016 06:16 PM | Tags: None
A nice and short (5-minute read) entrepreneur's perspective about technology choices while starting a modern web company, with nice shout-outs to Folly, Proxygen, and Wangle:
Starting a tech startup with C++
by James Perry
From the article:
A lot of my peers think it is bizarre that I am building a cloud service with C++ and not with a dynamic language — such as Ruby or Python — that provides high productivity to ship quickly.
It started to question my own judgement to use C++ and I decided to research whether it is good idea or not.
By Blog Staff | Jan 1, 2016 11:08 AM | Tags: None
As we enter 2016, here is another reminder of just how much has happened for C++ in just the past year:
Interlude (a C++ 2015 retrospective)
by Agustín "K-ballo" Bergé
From the article:
One year down the road, 2015 has gone by but not without modifications to the C++ lands. Several Technical Specification (TS) documents were published, and heavy work continues to go into both existing and new ones. Meanwhile, work is underway for what it is intended to be C++17...
... During 2015, the C++ lands grew bigger at an outstanding rate! As the TS model -- which allows to decouple and publish work independently from the standard -- is proving to be a success, 2016 it's certainly looking to be a good year for C++.
By Blog Staff | Dec 31, 2015 10:27 AM | Tags: None
A lot has happened in C++ in 2015! As we close out the year, here's a retrospective from an experienced C++ developer:
C++ status at the end of 2015
by Bartlomiej Filipek
From the article:
Maybe I’ll be boring with this note, but again I need to write that this was another good year for C++! Here’s a bunch of facts:
- Visual Studio 2015 was released with great support for C++14/17 and even more experimental features.
- Long-awaited GCC 5.0 was released at the beginning of the year.
- C++ gained a huge boost is popularity around July, 3rd stable place in the Tiobe Ranking.
- At CppCon 2015 there were some really important announcements made.
- C++17 seems to be just around the corner!
See my full report below...
By Meeting C++ | Dec 21, 2015 08:47 AM | Tags: video performance keynote intermediate efficiency basics advanced
See Chandler Carruth and Lars Knoll giving the keynotes at Meeting C++ this year:
Both Keynotes from Meeting C++ 2015 are online!
by Jens Weller
From the article:
Great news: Since yesterday, both of the keynotes from this years Meeting C++ conference are on youtube! Both keynote speakers chose to speak on a specific topic, and delivered very well. There is also a playlist for Meeting C++ 2015.
By Adrien Hamelin | Dec 21, 2015 07:27 AM | Tags: performance intermediate
Some things are not as efficient as we thought:
Careful With That STL Map Insert, Eugene
by Aras Pranckevičius
From the article:
So we had this pattern in some of our code. Some sort of “device/API specific objects” need to be created out of simple “descriptor/key” structures. Think D3D11 rasterizer state or Metal pipeline state, or something similar to them...
By Adrien Hamelin | Dec 16, 2015 02:41 PM | Tags: intermediate experimental
Everything is in the title:
Fun with folds
by Nick Athanasiou
From the article:
A fold is a higher order function (a function that has one or more function parameters and/or returns a function) that is recursively applied over a data structure...
By Felix Petriconi | Dec 13, 2015 12:18 PM | Tags: c++14 advanced
ACCU’s Overload journal of December 2015 is out. It contains the following C++ related articles.
Overload 130 / PDF
From the journal
Type Mosaicing with Consultables and Delegates
If several classes need to work together lots of boilerplate code is often needed. Nicolas Bouillot introduces type mosaicing to avoid this.
The Universality and Expressiveness of std::accumulate
Folding is a highly generic operation available through std::accumulate. Paul Keir goes beyond reduction, with the help of C++14’s polymorphic lambdas.
QM Bites – The two sides of Boolean Parameters
Boolean parameters are tempting but make life difficult. Matthew Wilson advises us to avoid them (almost) all the time.
Identify your Errors better with char[]
Error codes still get used instead of exceptions. Patrick Martin and Dietmar Kühl consider how to use char arrays for better information.
CPU Clocks and Clock Interrupts, and Their Effects on Schedulers
Instructions to sleep for a second almost never result in precisely one second’s sleep. Bob Schmidt walks us through the mechanics of why.