basics

CS 251: Intermediate Software Design in C++—Doug Schmidt

Doug Schmidt's C++-based software design course is available on YouTube.:

CS 251: Intermediate Software Design in C++

by Douglas Schmidt

This video playlist contains screencasts from a course I'm teaching on advanced C++ and object-oriented patterns/frameworks in the Spring of 2014 at Vanderbilt University. Please see http://www.dre.vanderbilt.edu/~schmidt/cs251/ for more information on this course.

Topics covered include:

  • Overview of C++ (3 lectures)
  • Overview of Subversion
  • Overview of the STL (8 lectures)
  • Overview of Patterns (2 lectures)
  • A Case Study of "Gang-of-Four" Patterns (8 lectures)

About the instructor:

Douglas C. Schmidt is a Professor of Computer Science, Associate Chair of the Computer Science and Engineering program, and a Senior Researcher at the Institute for Software Integrated Systems, all at Vanderbilt University. He has also been the Chief Technology Officer for the Software Engineering Institute at Carnegie Mellon University, where he was responsible for directing the technical vision and strategic R&D investments.

C++ developers will know of Doug particularly because of his widely-acclaimed ACE and related libraries.

Understanding the New Set and Map Containers in the C++11 Standard Library—S Clamage and D Gove

On the Oracle Tech Network, a nice reminder of the still-"new"-to-some hash-based containers, co-authored by the chair of the U.S. C++ standards committee:

Understanding the New Set and Map Containers in the C++11 Standard Library

by Steve Clamage and Darryl Gove

From the article:

One of the areas in the new C++ standard that has seen the most enhancement is the Standard Library. The functionality that is most likely to be immediately useful to developers is the additions to the container classes. This article describes the new set and map containers.

Quick Q: Why does this function take a parameter by value?—StackOverflow

A classic on SO:

Why do we copy then move?

I saw code somewhere in which someone decided to copy an object and subsequently move it to a data member of a class. This left me in confusion in that I thought the whole point of moving was to avoid copying. Here is the example:

struct S
{
    S(std::string str) : data(std::move(str))
    {}
};

Here are my questions:

  • Why aren't we taking an rvalue-reference to str?
  • Won't a copy be expensive, especially given something like std::string?
  • What would be the reason for the author to decide to make a copy then a move?
  • When should I do this myself?

The standard way of converting between numbers and strings in C++11—Marius Bancila

Quick: Would you resort to stringstream? But that's so C++98... and so hard.

More people need to know about to_string and its cousins. Marius Bancila takes us for a short tour:

The standard way of converting between numbers and strings in C++11

by Marius Bancila

From the article:

C++11 provides several standard functions for converting numbers to strings and strings to numbers, all of them available in the <string> header.

For converting numbers to strings there are two new overloaded functions: to_string() and to_wstring(). They take one argument of various numeric types (int, long, long long, double, long double, etc.) and return either a std::string or a std::wstring with the number converted to text. ...

For the other way around of converting strings to numbers there are several overloaded methods (taking either a std::string or a std::wstring): ...

CppCon 2014 super early bird almost sold out—~20 tickets left

cppcon-144.PNGIf you've been thinking of registering for CppCon, you can save by doing it in the next couple of days. Over at CppCon.org, Boris Kolpackov reports:

Super Early Bird Last Chance

In the past couple of weeks a lot of C++ enthusiasts have registered for CppCon 2014 and as a result we only have about 20 super early bird entries left. If you are planning to attend, this is your last chance to register at the most affordable price.

After the limited Super Early Bird is full, Early Bird registration will be available until the end of June. Student registrations are also available at a heavily subsidized rate to ensure students can take advantage of the program.

See also the Call For Submissions to see the kinds of topics that you can expect to see covered.

 

Modern C++: What You Need to Know—Herb Sutter

A recording of yesterday's //build/ talk by Herb Sutter is now available on Channel 9:

Modern C++: What You Need to Know

by Herb Sutter

This talk will give an update on recent progress and near-future directions for C++, both at Microsoft and across the industry. This is a great introduction to the current state of the language, including a glimpse into the future of general purpose, performance-intensive, power-friendly, powerful native programming.

From the advance description on Herb's blog:

I was asked to give a "foundational talk" about C++, and I decided that meant I should focus on addressing two questions that I get a lot these days:

  • FAQ #1 (1-2 slides): When should I use C++ compared to another language -- on all platforms in general, and on Microsoft platforms in particular?
  • FAQ #2 (lots of slides): What should I know about C++ if I’m a {Java|C#|JavaScript|Python|...} developer?

Even if you're a seasoned C++ developer, there are some nuggets and data points in the middle of the talk that I think you will find useful in your own work...

C++ in the 21st Century—Arvid Norberg

A recently posted talk by BitTorrent's chief architect:

C++ in the 21st Century

by Arvid Norberg

From the announcement:

In this edition of Tech Talks: an overview of some C++ gems. I threw this talk together because my team was about to start a new project in C++11. Since it’s fairly new, I figured some of it might not be as well-known as it should. Fundamentally, I’m pretty excited about all the new possibilities in C++11. Even higher-level abstractions, at even lower cost than C++98.

In the video below, we go over for-loops, automatic type deduction, lambda functions and more.

Control Structures in C++—Prashant Sharma

[For very new programmers, this is a basic review of the control flow language features available in C++ -- most of them also valid C, but at our request now with coverage also of the C++-specific range-for loop. -- Ed.]

Now on life`n`gadget:

Control Structures in C++ (Flow of Control)

by Prashant Sharma

From the article contents:

1 Control Structures in C++

1.1 Introduction

1.2 Selection Structure (Branching Statements)

1.2.1 if Statement

1.2.2 if-else Statement

1.2.3 Nested if else Statement

1.2.4  switch Statement

1.2.4.1 switch vs if-else

1.3 Looping Structure(Iterative Statements)

1.3.1 Elements of Looping Structure

1.3.2  for-loop

1.3.3 Range-for statement (range based for-loop) New C++11 Feature

1.3.4 while-loop

1.3.5 do-while loop

1.3.6 Related