Archive for category: Blog

Strategies for the Allocation of Memory

January 5, 2017

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There are a lot of different strategies for allocating memory. Programming languages like Python or Java…

RainerGrimmSmall

Improvements of this Blog

January 3, 2017

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In my post Time for Wishes, I asked: "How can I improved my blog?" And here are the answers. Most…

allocator

Memory Management with std::allocator

January 3, 2017

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What is common between all containers of the Standard Template Library? They have a type parameter Allocator…

overloadNewAndDelete

Overloading Operator new and delete 2

January 1, 2017

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I overloaded in the last post operator new and delete. Therefore, finding memory leaks and getting the…

myNew

Overloading Operator new and delete 1

December 30, 2016

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It happens quite too often that a C++ application allocates memory but doesn't deallocate it. This is…

Explicit Memory Management

December 29, 2016

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Explicit memory management has in C++ a high complexity but also provides great functionality. Sadly,…

raii

Garbage Collection – No Thanks

December 26, 2016

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C++ is old-fashioned. C++ has no garbage collection. No garbage collection? Right! Old fashioned? Wrong! What…

perfectForwarding1

Perfect Forwarding

December 24, 2016

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Today, we solve " ... a herefore unsolved problem in C++" (Bjarne Stroustrup). To make the long story…

RainerGrimmSmall

Time for Wishes

December 24, 2016

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I wrote more than 130 posts in my German blog about functional programming, embedded programming and…

moveAlgorithm

Move Semantis: Two Nice Properties

December 22, 2016

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I will talk about two nice properties of the move semantic in this post that is not so often mentioned.…

Latest news

std::executionNovember 18, 2024 - 9:03 am
std::execution, previously known as executors or Senders/Receivers, provides “a Standard C++ framework for managing asynchronous execution on generic execution resources“. (P2300R10) Side Note Change of plans. My original plan was to present the C++26 library after the core language. However, the implementation status of the library is not good enough. Therefore, I decided to continue […]
C++26 Core Language: Small ImprovementsNovember 4, 2024 - 8:34 am
There are more small improvements in the C++26 language, which you should know. static_assert extension First, here’s the syntax of static_assert in C++11: static_assert(compile time predicate, unevaluated string) With C++26, the string can be a user-defined type having the following properties: static_assert can now be used with a format string. Here’s a nice example from […]
Placeholders and Extended Character SetOctober 28, 2024 - 10:19 am
Placeholders are a nice way to highlight variables that are no longer needed. Additionally, the character set of C++26 will be extended. Placeholders Structured bindings are a C++17 feature that allows you to bind multiple variables to the elements of a structured object. The following program demonstrates using tuples and structured bindings to return and […]
Contracts in C++26October 21, 2024 - 9:54 am
Contracts allow you to specify preconditions, postconditions, and invariants for functions. Contracts should already be part of C++20 but were removed in the standard meeting in Cologne. Here is what Herb Sutter said about contracts on Sutter’s Mill: “contracts is the most impactful feature of C++20 so far, and arguably the most impactful feature we […]
Reflection in C++26: Determine the LayoutOctober 14, 2024 - 9:42 am
Thanks to reflection, you can determine the layout of types. My examples are based on the reflection proposal P2996R5. Class Layout The following program determines the class layout of a few members. // classLayout.cpp #include <experimental/meta> #include <iostream> #include <utility> #include <vector> #include <array> struct member_descriptor { std::size_t offset; std::size_t size; bool operator==(member_descriptor const&) const […]
Reflection in C++26: Metafunctions for Enums and ClassesOctober 7, 2024 - 1:53 pm
Today, I continue my journey through reflection in C++26 and play with enums and classes. The names of the metafunctions to access an Enum or a Class member are often identical. Access the Members of an Enum The following program is based on one by Daveed Vandevoorde. Daveed is one of the fathers of reflection, […]