Tag Archive for: Error Handling

Posts

C++23: A New Way of Error Handling with std::expected

August 28, 2023

C++23 extends the interface of std::optional and gets the new data type std::expected for error handling. Before…

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C++ Core Gudelines: goto considered Evil

August 17, 2018

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If you can't throw an exception and can't use final_action (finally) from the guideline support library,…

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C++ Core Guidelines: finally in C++

August 10, 2018

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To make my point clear, this post is about the exceptional case that you can not throw an exception.…

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C++ Core Guidelines: Rules about Exception Handling

August 1, 2018

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Today's post is about the right way to throw and catch exceptions. This means when you should throw and…

Design by contract

C++ Core Guidelines: A Short Detour to Contracts in C++20

July 20, 2018

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My original plan was it to write in this post about the next rules to error handling. But I changed my…

bobby car

C++ Core Guidelines: Rules for Error Handling

July 12, 2018

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Error handling is an essential part of writing good software; therefore, the C++ core guidelines have…

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std::execution: SenderDecember 16, 2024 - 11:25 am
std::execution offers three types of senders: factories, adapters, and consumers. I’ll take a closer look at these today. Most of the following content is from proposal P2300R10. I will try to represent it more concisely. Sender Factory A sender factory is an algorithm that takes no senders as parameters and returns a sender. execution::schedule execution::sender […]
std::execution: Composition of SendersDecember 9, 2024 - 10:25 am
Most sender adaptors are composable using the pipe operator. Let me start with a simple example of composition with the pipe operator. Instead of the nested function calls call1(call2(input)) you can write call1 | call2(input) or even: input | call1 | call2 Function composition Okay, this example was straightforward. Let’s do something more complicated. Proposal […]
std::execution: Inclusive ScanDecember 2, 2024 - 10:30 am
Inclusive scan solves problems related to range queries, such as calculating the sum of a range of elements in an array. It is also used in range minimum queries and various other algorithms. Before I present the asynchronous inclusive scan, I introduce the inclusive scan, aka prefix sum. Prefix Sum In computer science, the prefix […]
std::execution: Asynchronous AlgorithmsNovember 25, 2024 - 9:06 am
std::execution supports many asynchronous algorithms for various workflows. Presenting proposal P2300R10 is not easy. First, it is very powerful, and second, it is very long. Therefore, I concentrate on specific aspects of the proposal. What are the priorities of this proposal? Priorities The terms execution resource, execution agent, and scheduler are essential for the understanding […]
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 […]