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Two Full Days of C++11 for C++ Programmers -- Michael Caisse & Jon Kalb (Mar 25-26, San Francisco)

By Blog Staff | Jan 24, 2014 09:09 AM | Tags: intermediate

codestarssummit14.PNGMichael Caisse and Jon Kalb will be conducting a two-day training class on C++11 in San Francisco in March as part of the Code Stars Summit event.

Two Full Days of C++11 for C++ Programmers

Instructors: Michael Caisse and Jon Kalb

March 25-26

San Francisco, CA, USA

From the announcement:

C++11 introduces a lot of new tools for writing code that is expressive, but continues the C++ tradition of uncompromised performance. If you are comfortable with C++, but need to get up to speed with the language and library extensions offered by C++11 this is your opportunity to learn the latest in C++ from some of the best instructors available.

Topics covered include:

  • Move semantics, rvalues, and perfect forwarding
  • Lambda expessions
  • New smart pointers
  • Tuples
  • Range-based for loops
  • Variadic templates
  • Standard function and bind
  • auto and decltype
  • Initializer lists
  • Uniform initialiation
  • constexpr
  • Delegating constructors
  • Defaulted and deleted member functions
  • explicit and final
  • nullptr

Prerequisites:

No knowledge of C++11 is assumed, but basic familiarity with C++ is assumed. It isn’t necessary that students be able to write templates or operator overloads unassisted, but they need to be able to follow examples of such code, or they are likely to fall behind.

GotW #95 Solution: Thread Safety and Synchronization -- Herb Sutter

By Blog Staff | Jan 15, 2014 10:26 AM | Tags: intermediate

The solution to the latest GotW problem is now available:

GotW #95 Solution: Thread Safety and Synchronization

by Herb Sutter

From the article:

This GotW was written to answer a set of related frequently asked questions. So here’s a mini-FAQ on "thread safety and synchronization in a nutshell," and the points we’ll cover apply to thread safety and synchronization in pretty much any mainstream language.

Using Regular Expressions with Modern C++ -- Kenny Kerr

By Blog Staff | Jan 14, 2014 08:49 AM | Tags: intermediate

dn519920.kenny_kerr_headshot(en-us,MSDN.10).jpgIn the current MSDN Magazine:

Using Regular Expressions with Modern C++

by Kenny Kerr

From the article:

C++11 introduced a long list of features that are in themselves quite exciting, but if all you see is a list of isolated features, then you’re missing out. The combination of these features makes C++ into the powerhouse that many have grown to appreciate. I’m going to illustrate this point by showing you how to use regular expressions with modern C++... the combination of C++ language and library features really turns C++ into a productive programming language.

Type Erasure, Part 4 -- Andrzej Krzemieński

By Blog Staff | Jan 13, 2014 09:40 AM | Tags: intermediate

In part 4, Andrzej wraps up his series on type erasure with a discussion and comparison of facilities in the standard library, Boost, and otherwise.

Type Erasure, Part 4

by Andrzej Krzemieński

From the article:

In this post we will be wrapping up the series on type erasure. We will see an another form of value-semantic type erasure: boost::any, and try to compare the different methods.

Dive into C++11 (#4) — Smart pointers

By Vittorio Romeo | Jan 6, 2014 02:48 AM | Tags: intermediate

Hello once more isocpp users, I’m Vittorio Romeo, a computer science student, hobbyist game developer and C++ enthusiast.

I’ve uploaded the fourth episode of “Dive into C++11” on my YouTube channel.

After looking at C and C++'s memory and lifetime management in part 3, we'll take a brief look at C++11 smart pointers. We will learn what they are, what problem they solve, their advantages and their uses.

 

 


The intended audience for this tutorial/screencast are people who have some experience with C++ in general, and who watched the previous episodes. This episode may be very interesting for those with experience with C++ who want to learn more about variable lifetime and memory management.

I greatly appreciate comments and criticism, and ideas for future videos/tutorials.

Feel free to fork/analyze the source code at: https://github.com/SuperV1234/Tutorials

You can find the previous episodes here:

Episode 1
Episode 2
Episode 3
Playlist

Thanks for watching!

GotW #7b Solution: Minimizing Compile-Time Dependencies, Part 2

By Blog Staff | Jan 1, 2014 07:57 AM | Tags: intermediate basics

The solution to the latest GotW problem is now available.

GotW #7b Solution: Minimizing Compile-Time Dependencies, Part 2

by Herb Sutter

From the article:

Now that the unnecessary headers have been removed, it’s time for Phase 2: How can you limit dependencies on the internals of a class?

... 

Guideline: For widely-included classes whose implementations may change, or to provide ABI-safety or binary compatibility, consider using the compiler-firewall idiom (Pimpl Idiom) to hide implementation details. Use an opaque pointer (a pointer to a declared but undefined class) declared as struct impl; std::unique_ptr<impl> pimpl; to store private nonvirtual members.

Quick Q: Does constexpr guarantee compile-time evaluation? -- StackOverflow

By Blog Staff | Dec 31, 2013 10:12 AM | Tags: intermediate

Quick A: constexpr guarantees compile-time evaluation is possible if operating on a compile-time value, and that compile-time evaluation will happen if a compile-time result is needed.

From SO, the originally worded question:

Can C++ constexpr function actually accept non-constant expression as argument?

I have defined a constexpr function as following:

constexpr int foo(int i)
{
    return i*2;
}

And this is what in the main function:

int main()
{
    int i=2;
    cout<<foo(i)<<endl;
    int arr[foo(i)];
    for(int j=0;j<foo(i);j++)
        arr[j]=j;
    for(int j=0;j<foo(i);j++)
        cout<<arr[j]<<" ";
    cout<<endl;
    return 0;
}

The program was compiled under OS X 10.8 with command clang++. I was surprised that the compiler did not produce any error message about foo(i) not being a constant expression, and the compiled program actually worked fine. Why?

Quick Q: How do I use conditional noexcept? -- StackOverflow

By Blog Staff | Dec 31, 2013 02:57 AM | Tags: intermediate

The question also has a lemon-zest touch of "templates in headers" but the basic noexcept question is still the same:

Use of the noexcept specifier in function declaration and definition?

Consider the following function:

// Declaration in the .h file
class MyClass
{
    template <class T> void function(T&& x) const;
};

// Definition in the .cpp file
template <class T> void MyClass::function(T&& x) const;

I want to make this function noexcept if the type T is nothrow constructible.

How to do that? (I mean what is the syntax ?)