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The compiler can make up its own calling conventions, within limits--Raymond Chen

By Herb Sutter | Jan 28, 2015 12:43 PM | Tags: advanced

A new article from the Old New Thing:

The compiler can make up its own calling conventions, within limits

by Raymond Chen

From the article:

There are three parties to a calling convention. The function doing the calling. The function being called. The operating system. The operating system needs to get involved if something unusual occurs, like an exception, and it needs to go walking up the stack looking for a handler...

The lvalue/rvalue metaphor--Joseph Mansfield

By Herb Sutter | Jan 28, 2015 12:38 PM | Tags: intermediate c++11

Joseph Mansfield discusses about an important topic in C++:

The lvalue/rvalue metaphor

by Joseph Mansfield

From the article:

Every expression in C++ is either an lvalue or an rvalue. This distinction is what makes something like 5 = x; invalid, as the expression 5 is an rvalue expression and so cannot appear on the left of an assignment...

January 2015 C++ Compilers Status--Christophe Riccio

By Herb Sutter | Jan 28, 2015 12:29 PM | Tags: intermediate c++14 c++11

Christophe Riccio gives us an interesting point of view for a library author and shares the latest status of some compilers:

January 2015 C++ Compilers Status

by Christophe Riccio

From the article:

...Finally, a last issue for adopting new C++11 features is simply our own ignorance of which feature is available on all the compilers we support. To resolve that problem, I made the followiong table listing all the C++ features and their support on Clang, GCC, ICC and Visual C++...

for_each_arg -- Eric Niebler

By Felix Petriconi | Jan 26, 2015 05:49 AM | Tags: None

Eric Niebler picked up the Sean Parent's challenge regarding his for_each_argument tweet.

for_each_arg

by Eric Niebler

And after several iterations between Sean and Eric this is the beautiful result:

template<class F, class...Ts>
F for_each_arg(F f, Ts&&...a) {
  return (void)initializer_list<int>{(ref(f)((Ts&&)a),0)...}, f;
}

 

C++11 and 64-bit Issues--Andrey Karpov

By Andrey Karpov | Jan 25, 2015 11:53 PM | Tags: c++11 64-bit

Developing 64-bit applications in C/C++ requires much attention from a programmer. There are a number of reasons for 32-bit code to fail to work properly when recompiled for the 64-bit platform. Let's find out if the new features introduced in C++11 have made 64-bit software programmers' life any better and easier.

C++11 and 64-bit Issues

by Andrey Karpov

From the article:

Extensive use of the C++11 language's new constructs in your code doesn't guarantee that you will avoid 64-bit errors. However, the language does offer a number of useful features to help make your code shorter and safer.

A Small Set-Algorithm For Enum Values -- Felix Petriconi

By Felix Petriconi | Jan 23, 2015 03:53 PM | Tags: intermediate c++11

Inspired by Sean Parent's recent Tweet I came up with this idea:

A Small Set-Algorithm For Enum Values

by Felix Petriconi

From the article:

Often we have in our own production code statements like this:

auto predicate = [](State state) {
  return state == MyEnumClass::ValueA ||
         state == MyEnumClass::ValueD ||
         state == MyEnumClass::ValueEWithAVeryLongName;
};

A better readable solution with less typing is described there.

Twitter for C++ Programmers--Andrey Karpov

By Andrey Karpov | Jan 23, 2015 10:35 AM | Tags: None

This small post is for those programmers who use Twitter or are just about to start doing this. I'm sure developers will find some useful information here.

Twitter for C++ Programmers

by Andrey Karpov

From the article:

So, you are a C++ programmer. If you are wondering if you can find something interesting for yourself on Twitter, I have a few tips for you.

for_each_argument -- Sean Parent

By Felix Petriconi | Jan 23, 2015 12:25 AM | Tags: intermediate c++11

Sean Parent just published via Twitter this amazing short piece of code.

for_each_argument

by Sean Parent

The code is:

template <class F, class... Args>
void for_each_argument(F f, Args&&... args) {
    [](...){}((f(std::forward<Args>(args)), 0)...);
}