Archive for category: Embedded

copy

Copy versus Move Semantics: A few Numbers

December 20, 2016

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A lot was written about the advantages of move semantics to copy semantics. Instead of an expensive copy…

sizeof

std::array – Dynamic Memory, no Thanks

December 18, 2016

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std::array combines the best of two worlds. On the one hand, std::array has the size and efficiency of…

stringAndVector

Automatic Memory Management of the STL Containers

December 16, 2016

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One of the significant advantages of a C++ string to a C string and of a std::vector to a C array is…

weakPtr

std::weak_ptr

December 14, 2016

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std::unique_ptr models the concept of exclusive ownership, std::shared_ptr the concept of shared ownership.…

enabledShared

Specialities of std::shared_ptr

December 12, 2016

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After I draw the big picture of a std::shared_ptr in the last post, I want to present two special aspects…

sharedPtr

std::shared_ptr

December 11, 2016

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std::shared_ptr's share the resource. The shared reference counter counts the number of owners. Copying…

uniquePtr

std::unique_ptr

December 9, 2016

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According to the RAII idiom, a std::unique_ptr manages automatically and exclusively the lifetime of…

comparisonEng

Memory and Performance Overhead of Smart Pointers

December 6, 2016

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C++11 offers four different smart pointers. I will have a closer look in this post regarding memory and…

RessourcenmanagementEng

Careful Handling of Resources

December 5, 2016

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The careful handling of resources - may it be, for example, memory, files, or sockets - is a key concern…

POD

Generalized Plain Old Data

December 3, 2016

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Plain Old Data (POD) obeys the C standard layout. Therefore, you can directly apply the fast C functions…

Latest news

C++20: Query Calendar Dates and Ordinal DatesApril 22, 2024 - 9:53 am
The extended chrono library makes it relatively easy to ask for the time duration between calendar dates. This post is the sixth in my detailed journey through the chrono extension in C++20: Query Calendar Dates Without further ado, the following program queryCalendarDates.cpp queries a few calendar dates. // queryCalendarDates.cpp #include <chrono> #include <iostream> int main() […]
C++20: Displaying and Checking Calendar DatesApril 15, 2024 - 9:20 am
I created calendar dates in my last post, “C++20: Creating Calendar Dates,” and I will display and check them today. This post is the fifth in my detailed journey through the chrono extension in C++20: Displaying Calendar Dates Thanks to std::chrono::local_days or std::chrono::sys_days, you can convert calendar dates to a local or a system std::chrono::time_point. […]
C++20: Creating Calendar DatesApril 8, 2024 - 10:51 am
In this post, I will dive deeper into calendar dates and create them. If this post is too overwhelming for you, read my previous ones: C++20 supports constants and literals to make using calendar-date types more convenient. Constants and Literals for Calendar Types Let me start with the constants for std::chrono::weekday, and std::chrono::month. std::chrono::Monday std::chrono::Thuesday […]
C++20: Time of DayMarch 25, 2024 - 10:08 am
This new data type std::chrono::hh_mm_ss in C++20 stands for the time of day. Time of Day std::chrono::hh_mm_ss is the duration since midnight split into hours, minutes, seconds, and fractional seconds. This type is typically used as a formatting tool. First, the following table gives you a concise overview of std::chrono::hh_mm_ss instance tOfDay. Depending on the […]
C++20: Basic Chrono Terminology with Time Duration and Time PointMarch 18, 2024 - 10:34 am
Today, I continue my journey through the basic types with time durations and time points. Time Durations C++14 introduced helper types such as std::chrono::seconds for time durations and corresponding time literals such as 5s. C++20 added new helper types. The following table shows all for completeness. Often the time duration std::chrono::days and the calendar date […]
My Next Mentoring Program: “Concurrency with Modern C++” startsMarch 11, 2024 - 11:24 am
My next mentoring program, “Concurrency with Modern C++”, starts on the 15th of March. Registration is open.