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C++ Weekly Episode 96: Transparent Lambda Comparators—Jason Turner

By Jason Turner | Jan 1, 2018 03:39 PM | Tags: intermediate efficiency c++17 advanced

Episode 96 of C++ Weekly.

Transparent Lambda Comparators

by Jason Turner

About the show:

In this episode Jason explores the use of lambdas as comparators for the associative containers. Just how far can we take the use of lambdas? Variadic templates, forwarding references, multiple inheritance, variadic "using" declarations, local classes, transparent comparators and direct base class initialization are all utilized in this video.

A friendly type predicate--Andrzej Krzemieński

By Adrien Hamelin | Dec 27, 2017 10:38 AM | Tags: intermediate c++11

To improve the error messages.

A friendly type predicate

by Andrzej Krzemieński

From the article:

This is a sequel to the previous post on writing a custom type predicate. One of the readers on Reddit made a very insightful observation. The user has implemented a type that she intends to use with our library, call it Calc. She passes it to the library function, and she gets the compiler error:

static assertion failed: X does not have a desired interface

But what is our type missing? In the previous post we were describing 3 constraints. A concept could have far more of them. The user has already made an effort to have Calc comply with the constraints, so there must be something tiny missing. Maybe there is a bug in the implementation of the predicate? But it is difficult to track what it is that the predicate does not like about our type. We could use some more specific information...

Speeding up the Build of C and C++ Projects

By Andrey Karpov | Dec 25, 2017 06:01 AM | Tags: precompiled headers devops compilation

Many programmers know firsthand that C and C++ program builds very long. Someone solves this problem by sword-fighting at build time, someone is going to the kitchen to "grab some coffee". This article is for those who are tired of this, and who decided it is time to do something about it.

Speeding up the Build of C and C++ Projects

by Phillip Khandeliants

From the article:

If your operating system uses ELF format object files (Unix-like systems), you can replace the GNU ld linker with GNU gold. GNU gold comes with binutils starting from the version 2.19, and is activated by the flag -fuse-ld=gold. In CMake it can be activated, for example, by the following code.

 

CppCast Episode 131: C++ Object Model with Nicole Mazzuca

By robwirving | Dec 22, 2017 02:14 PM | Tags: None

Episode 131 of CppCast the only podcast for C++ developers by C++ developers. In this episode Rob and Jason are joined by Nicole Mazzuca to talk about the C++ Object Model, and some of the differences between Rust and C++.

CppCast Episode 131: C++ Object Model with Nicole Mazzuca

by Rob Irving and Jason Turner

About the interviewee:

Nicole is someone who's thought a bit too much about object models and error handling. She started in C, moved to Rust, and then fell into C++ a year ago. She also loves coffee, and latte art.

Boost 1.66 is out!

By Adrien Hamelin | Dec 18, 2017 02:52 PM | Tags: community boost

New version of boost!

Boost 1.66 is out!

From the article:

New Libraries

  • Beast: Portable HTTP, WebSocket, and network operations using only C++11 and Boost.Asio, from Vinnie Falco.
  • CallableTraits: A spiritual successor to Boost.FunctionTypes, Boost.CallableTraits is a header-only C++11 library for the compile-time inspection and manipulation of all 'callable' types. Additional support for C++17 features, from Barrett Adair.
  • Mp11: A C++11 metaprogramming library, from Peter Dimov.

...