Named Optional Parameters - JavaScript Style Brian Davidson (briandavidson@meta.com) Summary C++ developers often run into the situation where we have multiple parameters in a function with the same

A Relaxed Guide to memory_order_relaxed Hans Boehm Paul E. McKenney Google Facebook CPPCON 2020std::atomic/std::atomic_ref and memory_order_relaxed ● C++ atomic Small problems: Out of thin air (OOTA) & read from untaken branch (RFUB) ○ Small but persistent: Java has been attacking a similar problem for more than 20 years ○ Some progress within the past few years: Correctly define and prohibit out-of-thin-air results. ○ Without prohibiting necessary reordering ● Java, C11, C++11 tried hard and failed. ● There are once again solutions on the table. ● Technically

• May require minimal space overhead • Read and write from different programming languages • C++, Java, Python, … • Maybe programming errors could have serious consequences • May require random access something like this” • But • Different transport mechanisms/libraries have different interfaces • Google protocol buffers, Flatbuffers, SBE, JSON, XML, and many, many more • The transport interface bleeds “the message interface” Business logic (C++) Business logic (Java) transport transport Message interface (C++) Message interface (Java) Stroustrup - "Primitive" - CppCon 2020 7 Tiny, thin layer

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 2 Conan migration guide to 2.0 7 2.1 Migrating the recipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Please check out our FAQ section or . 6 Chapter 1. Introduction CHAPTER TWO CONAN MIGRATION GUIDE TO 2.0 Conan 2.0-beta is already released, you can install the latest Conan Alpha version from PyPI the setting doesn’t exist. It has to be protected with try/except: 8 Chapter 2. Conan migration guide to 2.0 Conan Documentation, Release 1.50.2 def configure(self): try: # In windows, with msvc,

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 881 23 Conan migration guide to 2.0 883 23.1 Migrating the recipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . conanfile will be quite simple as shown in the examples and tutorials we have used so far in this user guide. For example, in Getting started, we showed how you can run the conan install .. command inside the (ConanCenter Continuous Integration). To contribute packages to ConanCenter, read the ConanCenter guide for more information. 8.1.2 conan-center [deprecated] conan-center was the official repository but

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 882 23 Conan migration guide to 2.0 885 23.1 Migrating the recipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . conanfile will be quite simple as shown in the examples and tutorials we have used so far in this user guide. For example, in Getting started, we showed how you can run the conan install .. command inside the (ConanCenter Continuous Integration). To contribute packages to ConanCenter, read the ConanCenter guide for more information. 8.1.2 conan-center [deprecated] conan-center was the official repository but

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 875 23 Conan migration guide to 2.0 877 23.1 Migrating the recipes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . conanfile will be quite simple as shown in the examples and tutorials we have used so far in this user guide. For example, in Getting started, we showed how you can run the conan install .. command inside the (ConanCenter Continuous Integration). To contribute packages to ConanCenter, read the ConanCenter guide for more information. 8.1.2 conan-center [deprecated] conan-center was the official repository but

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 870 23 Conan migration guide to 2.0 873 23.1 Update the syntax of your Conanfile . . . . . . . . . . . . . . . . . . . . . . conanfile will be quite simple as shown in the examples and tutorials we have used so far in this user guide. For example, in Getting started, we showed how you can run the conan install .. command inside the (ConanCenter Continuous Integration). To contribute packages to ConanCenter, read the ConanCenter guide for more information. 8.1.2 conan-center [deprecated] conan-center was the official repository but

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 836 23 Conan migration guide to 2.0 839 vii 23.1 Update the syntax of your Conanfile . . . . . . . . . . . . . . . . . . . . conanfile will be quite simple as shown in the examples and tutorials we have used so far in this user guide. For example, in Getting started, we showed how you can run the conan install .. command inside the (ConanCenter Continuous Integration). To contribute packages to ConanCenter, read the ConanCenter guide for more information. 8.1.2 conan-center [deprecated] conan-center was the official repository but

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 845 vii 23 Conan migration guide to 2.0 847 23.1 Update the syntax of your Conanfile . . . . . . . . . . . . . . . . . . . . . . conanfile will be quite simple as shown in the examples and tutorials we have used so far in this user guide. For example, in Getting started, we showed how you can run the conan install .. command inside the (ConanCenter Continuous Integration). To contribute packages to ConanCenter, read the ConanCenter guide for more information. 8.1.2 conan-center [deprecated] conan-center was the official repository but