#include <rules>
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- 51 minutes ago | 4 points | 0 comments
- URL: https://zeux.io/2010/11/15/include-rules/
- Discussions: https://news.ycombinator.com/item?id=39249430
- Summary: This post discusses the importance of properly managing header files in C++ projects to ensure fast builds and minimizeheader dependency issues. The author outlines two important rules: each file should include the minimum amount of files and each file should include all dependent headers. The post also covers header guards and includes an introduction to using #pragma once. The goal is to maintain self-contained, easily included headers, with a focused on minimizing dependencies and optimizing build times.
pragma
Fast Methods to Convert Uppercase Letters to Lowercase in C++此文章有中文版本/This article is available in Chinese TL;DR Version Jump to test results: Test Results Summary: Without #pragma GCC optimize, use the followin https://www.blogtalk.org/go?from=feed&link=https%3A%2F%2Fhowiehz.top%2Farchives%2Fen-quick-way-to-convert-uppercase-letters-in-strings-to-lowercase-in-cpp
Fast Methods to Convert Uppercase Letters to Lowercase in C++此文章有中文版本/This article is available in Chinese TL;DR Version Jump to test results: Test Results Summary: Without #pragma GCC optimize, use the followin https://www.blogtalk.org/go?from=feed&link=https%3A%2F%2Fhowiehz.top%2Farchives%2Fen-quick-way-to-convert-uppercase-letters-in-strings-to-lowercase-in-cpp
The messy reality of SIMD (vector) functions
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- 2 days ago | 5 points | 0 comments
- URL: https://johnnysswlab.com/the-messy-reality-of-simd-vector-functions/
- Discussions: https://news.ycombinator.com/item?id=44468114
- Summary: The article discusses SIMD (vector) functions, which process multiple data elements per function call to improve performance. It explains how to declare and define vector functions using compiler pragmas or attributes, such as `#pragma omp declare simd`. The article highlights the limitations of SIMD functions, including limited compiler support and inefficient compiler-generated implementations. It also provides guidance on how to provide custom vector implementations using intrinsics and how to override vector functions. The article concludes that while SIMD functions have potential, their effectiveness is hindered by various limitations and caveats.