Solving the Static Initialization Order Fiasco with C++20--Rainer Grimm

By Adrien Hamelin | Jul 22, 2020 10:55 AM | Tags: c++20

Are you aware of the problem?

Solving the Static Initialization Order Fiasco with C++20

by Rainer Grimm

From the article:

According to the FAQ of isocpp.org is the static initialization order fiasco "a subtle way to crash your program". The FAQ continues: The static initialization order problem is a very subtle and commonly misunderstood aspect of C++. ". Today, I write about this very subtle and misunderstood aspect of C++.

A plea for order -- Philipp Lenk

By Rahel Natalie | Jul 22, 2020 09:45 AM | Tags: None

A few days ago, one particularly ambitious victim student of mine asked for assistance in tracking down a bug.

A plea for order

by Philipp Lenk

From the article:

I know I promised to talk more about emulation, about chess and operating systems, but I have to get something off of my chest first. This is not going to be one of my would-be grand and elongated epics trying to cover far too much in far too many words. Instead, I shall focus on one very small, very self contained thing: the order of #include directives in C++ source code

Quick Q; Recursive unordered_map

By Adrien Hamelin | Jul 20, 2020 09:30 AM | Tags: basics

Quick A: there is no guarantee for a container to work with incomplete types.

Recently on SO:

Recursive unordered_map

STL containers are not required to work with incomplete types. If you don't mind extra indirection, then the workaround is std::map<int, std::unique_ptr<Node>>.

8 years of Meeting C++

By Meeting C++ | Jul 17, 2020 04:53 AM | Tags: meetingcpp community

8 years ago in 2012, Meeting C++ got started!

8 years of Meeting C++

by Jens Weller

From the article:

In 2012 Meeting C++ got started in July. Planned first to be a one off conference, now it is a successfull international conference and a platform for C++ on the internet.

Two new Keywords in C++20: consteval and constinit--Rainer Grimm

By Adrien Hamelin | Jul 16, 2020 12:06 PM | Tags: c++20

The series continue.

Two new Keywords in C++20: consteval and constinit

by Rainer Grimm

From the article:

With C++20 we get two new keywords: consteval and constinit. consteval produces a function that is executed at compile-time and constinit guarantees that a variable is initialized at compile-time...

Quick Q: Is it possible to make template specialization for zero template arguments?

By Adrien Hamelin | Jul 16, 2020 12:03 PM | Tags: basics

Quick A: Do you need it?

Recently on SO:

Is it possible to make template specialization for zero template arguments?

If T is used only for the constructor, you don't need to template the whole class;

Scoped (class) enums: fundamentals and examples -- Hitesh Kumar

By Hitesh Kumar | Jul 11, 2020 01:26 PM | Tags: c++11

C++11 scoped enums deep dive and comparison with C++98 unscoped enums.

Scoped (class) enums: fundamentals and examples

by Hitesh Kumar

From the article:

Scoped enums (enum class/struct) are strongly typed enumerations introduced in C++11. They address several shortcomings of the old C-style (C++98) enums, mainly associated with type-safety and name collisions.

Designated Initializers--Rainer Grimm

By Adrien Hamelin | Jul 8, 2020 01:31 PM | Tags: c++20

The series continue.

Designated Initializers

by Rainer Grimm

From the article:

Designated initialization is an extension of aggregate initialization and empowers you to directly initialize the members of a class type using their names...

Polymorphic Allocators, std::vector Growth and Hacking

By Adrien Hamelin | Jun 30, 2020 10:05 AM | Tags: c++17

Did you know them?

Polymorphic Allocators, std::vector Growth and Hacking

by Bartlomiej Filipek

From the article:

The concept of a polymorphic allocator from C++17 is an enhancement to standard allocators from the Standard Library.

It’s much easier to use than a regular allocator and allows containers to have the same type while having a different allocator, or even a possibility to change allocators at runtime.

Let’s see how we can use it and hack to see the growth of std::vector containers...

Stupid std::tuple tricks: Finding a type in a tuple

By Adrien Hamelin | Jun 30, 2020 10:03 AM | Tags: c++11

The series continue.

Stupid std::tuple tricks: Finding a type in a tuple

by Raymond Chen

From the article:

Given a tuple, you can extract the type of the Nth element in the tuple with the help of std::tuple_element_t<N, Tuple>...