Archive for category: C++ Core Guidelines

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C++ Core Guidelines: Surprises with Argument-Dependent Lookup

November 28, 2018

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There is, in particular, one rule left to template interfaces which are quite interesting: T.47: Avoid…

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C++ Core Guidelines: Regular and SemiRegular Types

November 22, 2018

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The topic for today is quite important when you create your type: Regular and SemiRegular types. Here…

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C++ Core Guidelines: Template Interfaces

November 8, 2018

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This post is about template interfaces due to the C++ core guidelines: "...a critical concept", because…

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C++ Core Guidelines: Pass Function Objects as Operations

November 1, 2018

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An interface is a contract between a user and an implementer and should, therefore, be written with great…

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C++ Core Guidelines: Definition of Concepts, the Second

October 25, 2018

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Let me continue with the rules for defining concepts in the guidelines. The first of the three remaining…

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C++ Core Guidelines: Rules for the Definition of Concepts

October 12, 2018

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Although rule T.11 states: Whenever possible, use standard concepts you sometimes have to define your…

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C++ Core Guidelines: Rules for the Usage of Concepts

October 4, 2018

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We will get concepts with high probability in C++20. Here are the rules from the C++ core guidelines…

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C++ Core Guidelines: Better Specific or Generic?

September 18, 2018

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Concepts revolutionize the way we think about and use generic programming. They didn't make it in C++11…

C++ Core Guidelines: Type Erasure with Templates

September 11, 2018

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In the last post C++ Core Guidelines: Type Erasure, I presented two ways to implement type erasure: void…

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C++ Core Guidelines: Type Erasure

September 6, 2018

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The rule "T.5: Combine generic and OO techniques to amplify their strengths, not their costs" of…

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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 […]