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CppCon 2015 string_view--Marshall Clow

By Adrien Hamelin | Sep 9, 2016 11:46 AM | Tags: experimental efficiency

Have you registered for CppCon 2016 in September? Don’t delay – Registration is open now.

While we wait for this year’s event, we’re featuring videos of some of the 100+ talks from CppCon 2015 for you to enjoy. Here is today’s feature:

string_view

by Marshall Clow

(watch on YouTube) (watch on Channel 9)

Summary of the talk:

The library fundamentals TS contains a new class "string_view", which appears to be unlike anything else in the standard library. In this talk, we will explore the uses of string_view, when it is appropriate to use it, and when it is not. Along the way, I will discuss other possible "_view" classes, with an eye to the upcoming "ranges" proposal before the standards committee.

CppCast Episode 69: MAME Emulation Project with Miodrag Milanovic

By robwirving | Sep 9, 2016 10:11 AM | Tags: None

Episode 69 of CppCast the only podcast for C++ developers by C++ developers. In this episode Rob and Jason are joined by Miodrag Milanovic to discuss his work on the MAME emulation project, its history and moving the MAME codebase from C to C++.

CppCast Episode 69: MAME Emulation Project with Miodrag Milanovic

by Rob Irving and Jason Turner

About the interviewee:

Born in 1978, living in Novi Sad, Serbia. Proud husband and father of two. Started professional programming career in year 2000 working in Java, C# and of course C and C++ for various international customers. From 2012 coordinator of MAME emulation project, pushing hard in modernization of two decade old code.

CppCon 2015 Pruning Error Messages From Your C++ Template Code--Roland Bock

By Adrien Hamelin | Sep 7, 2016 02:16 PM | Tags: intermediate efficiency community

Have you registered for CppCon 2016 in September? Don’t delay – Registration is open now.

While we wait for this year’s event, we’re featuring videos of some of the 100+ talks from CppCon 2015 for you to enjoy. Here is today’s feature:

Pruning Error Messages From Your C++ Template Code

by Roland Bock

(watch on YouTube) (watch on Channel 9)

Summary of the talk:

Many template libraries are regarded with ambivalent feelings by developers: On the one hand, such libraries can offer wonderful functionality. On the other hand, they are dreaded for the sheer amount of error messages spilled out by the compiler when there is even a small bug in the developer's code. This talk will demonstrate several techniques to drastically reduce the amount of compiler output in case of errors (with real-life examples, of course).

CppCon 2015 Secure C++ Programming--Gwendolyn Hunt

By Adrien Hamelin | Sep 5, 2016 01:42 PM | Tags: community advanced

Have you registered for CppCon 2016 in September? Don’t delay – Registration is open now.

While we wait for this year’s event, we’re featuring videos of some of the 100+ talks from CppCon 2015 for you to enjoy. Here is today’s feature:

Secure C++ Programming

by Gwendolyn Hunt

(watch on YouTube) (watch on Channel 9)

Summary of the talk:

Security vulnerabilities are fundamentally defects in our code. We know many of these defects stem from string processing, buffer overflows and integer underflow and overflows. These defects become security vulnerabilities when an attacker can crash an application, cause undefined behavior that leads to a Denial of Service, privilege escalation or hidden installation of rogue software.

So how do we build more secure C++ software? It starts by gaining an understanding of the basics of security vulnerabilities and how to identify them using the rich set of tools we now have available. With this foundation we can build a development culture where security considerations are pervasive and treated as important as program and algorithm correctness.

This session begins with a survey of common C/C++ string, integer and STL container issues and mitigations for these vulnerabilities. Follows with two detailed examples of vulnerabilities and how to fix their problems. Finishes with a survey of tools and references we have available today.

CppCon 2015 Demystifying Floating Point--John Farrier

By Adrien Hamelin | Sep 2, 2016 12:29 PM | Tags: intermediate efficiency

Have you registered for CppCon 2016 in September? Don’t delay – Registration is open now.

While we wait for this year’s event, we’re featuring videos of some of the 100+ talks from CppCon 2015 for you to enjoy. Here is today’s feature:

Demystifying Floating Point

by John Farrier

(watch on YouTube) (watch on Channel 9)

Summary of the talk:

Every day we develop software that relies on math while we often overlook the importance of understanding the implications of using our IEEE floats. From the often cited “floating point error” to unstable algorithms, this talk will explain the importance of floats, understanding their storage, the impact of the IEEE floats on math, and designing algorithms better. Finally, the talk will conclude with a quick case study of storing time for games and simulations.

CppCon 2015 Compile-time contract checking with nn--Jacob Potter

By Adrien Hamelin | Aug 31, 2016 01:56 PM | Tags: performance intermediate

Have you registered for CppCon 2016 in September? Don’t delay – Registration is open now.

While we wait for this year’s event, we’re featuring videos of some of the 100+ talks from CppCon 2015 for you to enjoy. Here is today’s feature:

Compile-time contract checking with nn

by Jacob Potter

(watch on YouTube) (watch on Channel 9)

Summary of the talk:

Tony Hoare called null pointers a “billion-dollar mistake”, but nearly every language in wide use today has them. There have been many efforts to reduce the risk of nulls creeping in where they shouldn't be, but most involve attributes or annotations rather than being part of the type system itself. Can we do better? C++'s customizable value types make it possible to solve this sort of problem.

In this talk, I’ll present a non-nullable pointer wrapper, `nn`, that’s found wide use in Dropbox’s C++ code. This helper lets us use the type system to track pointers that can't be null, and express and enforce contracts at compile time. I’ll go into some depth on the template trickery needed to make things “just work”, the toolchain bugs we found along the way, and how this tool has helped us improve our code.

CppCon 2015 Templator: Demo of a nice tool for Visualizing Template Instantiations--Peter Sommerlad

By Adrien Hamelin | Aug 29, 2016 11:22 AM | Tags: intermediate experimental community

Have you registered for CppCon 2016 in September? Don’t delay – Registration is open now.

While we wait for this year’s event, we’re featuring videos of some of the 100+ talks from CppCon 2015 for you to enjoy. Here is today’s feature:

Templator: Demo of a nice tool for Visualizing Template Instantiations

by Peter Sommerlad

(watch on YouTube) (watch on Channel 9)

Summary of the talk:

Many C++ beginners shy away from employing templates in their code, because of the myth of templates being hard. Even seasoned C++ developers can have problems manually interpreting template code correctly as Olve Maudal's C++ pub quiz demonstrates. Overloads and template specializations make it hard for programmers and also IDEs to show a developer what happens without compiling a program and even with a compile one might not get, what actually happens unless an unintelligible error message from your compiler appears.

My students tried to alleviate that problem by visualizing template instantiation and overload selection in a C++ IDE and allow to navigate through template code in instantiation context that a compiler would only create internally and that is otherwise not available for humans. While still in its nascent state I hope to show what is possible and if things go as planned at the time of the submission you should be able to solve the template pub quiz questions without running the programs.