Archive for category: C++ Core Guidelines

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C++ Core Guidelines: Accessing Objects in a Hierarchy

October 27, 2017

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There are nine rules to access objects in class hierarchies. Let's have a closer look. Here…

C++ Core Guidelines: The Remaining Rules about Class Hierarchies

October 20, 2017

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I needed three posts to present the 20 rules for class hierarchies in the C++ core guidelines. Here are…

C++ Core Guidelines: More Rules about Class Hierarchies

October 13, 2017

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In the last post, I started our journey with the rules of class hierarchies in modern C++. The first…

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C++ Core Guidelines: Class Hierarchies

October 5, 2017

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Let's talk in this post about rules for class hierarchies in general and in particular. The C++ core…

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C++ Core Guidelines: Function Objects and Lambdas

September 29, 2017

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I can not think about modern C++ without lambda expressions. So my wrong assumption was that there are…

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C++ Core Guidelines: Comparison, Swap, and Hash

September 22, 2017

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This post will be about comparisons, swap, and hash. That means I conclude with his post my treatise…

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C++ Core Guidelines: Rules for Copy and Move

September 15, 2017

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The rules for copy and move are pretty obvious. But before I describe them I have to write about the…

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C++ Core Guidelines: Constructors

September 8, 2017

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The lifecycle of each object starts with its creation; therefore, this post will be about the thirteen…

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C++ Core Guidelines: Destructor Rules

September 1, 2017

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Does my class need a destructor? I often heard this question. Most of the time the answer is no and you…

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C++ Core Guidelines: The Rule of Zero, Five, or Six

August 25, 2017

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This post is about the rule of zero, five, or maybe six. I will also show the difference between copy…

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Time Zones: Online ClassesMay 13, 2024 - 9:39 am
Today, I will continue to present the functionality of the time zones of the C++20 chrono extension. This post is the eight in my detailed journey through the chrono extension in C++20: Various Time Zones for Online Classes The program onlineClass.cpp answers the following question: How late is it in given time zones when I […]
Time Zones: DetailsMay 6, 2024 - 9:22 am
Today, I present the time-zones functionality of the C++20 extension.
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 […]