years (absent other forces)JS & other examples Status quo language (e.g., JavaScript, C++, Objective-C) C++ examples — TypeScript Swift(A) “10%” incremental evolution-as-usual plan Default for for existing evolution JS & other examples 10% Status quo language (e.g., JavaScript, C++, Objective-C) C++ examples — C++11/14/17/20/23 TypeScript Swift ES 2-10 (except 4) C99/11/17, Python 2 examples “10” improvement, leap-forward plan 10% 10 Status quo language (e.g., JavaScript, C++, Objective-C) C++ examples — C++11/14/17/20/23 TypeScript Swift ES 2-10 (except 4) C99/11/17, Python 2

Your Code as a Crime Scene + code-maat12 How big is the universe? 15 Millions Lines of C/C/Objective-C 670,000 Lines Product Code ● Ozone ● RX ● Neutron ● Nectar ● etc. 1.33 Million Lines

really “automatic memory management”. - Reference counted - C++ – std::shared_ptr - Python - Objective-C (manual or automatic – see ARC) - Swift - COM – AddRef()/Release() - Non-Reference counted

• CXX ： C++ 语言 • ASM ：汇编语言 • Fortran ：老年人的编程语言 • CUDA ：英伟达的 CUDA （ 3.8 版本新增） • OBJC ：苹果的 Objective-C （ 3.16 版本新增） • OBJCXX ：苹果的 Objective-C++ （ 3.16 版本新增） • ISPC ：一种因特尔的自动 SIMD 编程语言（ 3.18 版本新增）

Smart Pointers and Memory Management 5.1 RAII and Reference Counting Programmers who understand Objective-C/Swift/JavaScript should know the concept of refer- ence counting. The reference count is counted

std::tuple 虽然有效，但是标准库提供的功能有限，没办法满足运行期索引和迭代的需求，好在我 们还有其他的方法可以自行实现。 第 5 章智能指针与内存管理 5.1 RAII 与引用计数 了解 Objective-C/Swift 的程序员应该知道引用计数的概念。引用计数这种计数是为了防止内存泄 露而产生的。基本想法是对于动态分配的对象，进行引用计数，每当增加一次对同一个对象的引用，那 么引用对象的引

MesonToolchain(self) tc.cpp = "/path/to/other/compiler" tc.generate() Objective-C arguments Since Conan 1.51, it’s been introduced some specific Objective-C/Objective-C++ arguments: objc, objcpp, objc_args, objc_link_args in pure C projects (or in general, non-C++ projects capable of using C API, such as written in Objective-C, Fortran, etc.). Parameters: • conanfile (Required): ConanFile instance. Usually self. 18.7 • Feature: Added objc_args/objc_link_args/objcpp_args/objcpp_link_args to MesonToolchain for Objective-C/C++ language. #11632 . Docs here • Feature: Adding default directories to MesonToolchain. #11618

MesonToolchain(self) tc.cpp = "/path/to/other/compiler" tc.generate() Objective-C arguments Since Conan 1.51, it’s been introduced some specific Objective-C/Objective-C++ arguments: objc, objcpp, objc_args, objc_link_args in pure C projects (or in general, non-C++ projects capable of using C API, such as written in Objective-C, Fortran, etc.). Parameters: • conanfile (Required): ConanFile instance. Usually self. 18.7

MesonToolchain(self) tc.cpp = "/path/to/other/compiler" tc.generate() Objective-C arguments Since Conan 1.51, it’s been introduced some specific Objective-C/Objective-C++ arguments: objc, objcpp, objc_args, objc_link_args in pure C projects (or in general, non-C++ projects capable of using C API, such as written in Objective-C, Fortran, etc.). Parameters: • conanfile (Required): ConanFile instance. Usually self. 18.7

MesonToolchain(self) tc.cpp = "/path/to/other/compiler" tc.generate() Objective-C arguments Since Conan 1.51, it’s been introduced some specific Objective-C/Objective-C++ arguments: objc, objcpp, objc_args, objc_link_args in pure C projects (or in general, non-C++ projects capable of using C API, such as written in Objective-C, Fortran, etc.). Parameters: • conanfile (Required): ConanFile instance. Usually self. 18.7