## +24 ## C++/Rust Interop: Using Bridges in Practice ## TYLER WEAVER ## 20 24 September 15 - 20  ) -> Isometry3; } ## Manual Interop • Create unsafe Rust functions for creating and deleting Rust objects • Store the Rust object in  CMake With C++ Interop Layer Rust Library with Unsafe ![Image](/uploads/documents/5/a/d/2/5ad2590f0b7f73a70cdd0a8fd0fb6615/p21_1

today’s guidance not needed 50 safer metric: 98% fewer type/bounds/init/lifetime CVEs Friction-free interop Always generate 100% C++20/23 code Use any C++ code directly, no wrapping/marshaling/thunking/… Easily with JavaScript 48 A B effort value effort value ? 49 Basic requirement: High fidelity interop. Min bar: NewThing can seamlessly use OldThing. Good: “An OldThing project can add NewThing side seeing benefit.” Ex: “Add NewLang file and see benefit.” 50 Basic requirement: High fidelity interop. Min bar: NewThing can seamlessly use OldThing. Good: “An OldThing project can add NewThing side

with the built-in function @Type, or using the shorthand as std.meta.Vector. TODO talk about C ABI interop ## SIMD TODO Zig's SIMD abilities are just beginning to be fleshed out. Here are some talking the importance of interacting with existing C code. There are a few ways that Zig facilitates C interop. ## C Type Primitives These have guaranteed C ABI compatibility and can be used like any other

Conversion between vectors, arrays, and slices... OK All 2 tests passed. ## TODO talk about C ABI interop TODO consider suggesting std.MultiArrayList See also: • @splat • @shuffle • @select • @reduce the importance of interacting with existing C code. There are a few ways that Zig facilitates C interop. ## C Type Primitives These have guaranteed C ABI compatibility and can be used like any other c_short • c_ushort • c_int • c_uint • c_long • c_ulong • c_longlong • c_ulonglong • c_longdouble To interop with the C void type, use anyopaque. See also: • Primitive Types ## I mport from C Header File

Inspired ## Corresponding quantity mechanism https://aurora-opensource.github.io/au/main/howto/interop/ struct MyMeters { uint32_t val; }; class Quantity { uint32_t value_; }; ## Corresponding quantity mechanism https://aurora-opensource.github.io/au/main/howto/interop/ struct MyMeters { uint32_t val; }; class Quantity { uint32_t value_; > ## Corresponding quantity mechanism https://aurora-opensource.github.io/au/main/howto/interop/ struct MyMeters { uint32_t val; }; 1 namespace au { 2 template<> 3 struct

(SWIG) – 1996 JVM - Java Native Interface (JNI) – 1997 .NET – Platform Invoke (P/Invoke), COM interop, C++/CLI – 2002, 2005 JVM - Java Native Access (JNA) – 2007 Go – cgo – permit C in the .go source [Image](/uploads/documents/3/d/7/f/3d7fd22cb5965e0179dfa5b5609f25ee/p11_1.jpg) ## You can make interop suck less by Explicitly state/document argument content. • Instead of long or int, use int64_t [Image](/uploads/documents/3/d/7/f/3d7fd22cb5965e0179dfa5b5609f25ee/p18_1.jpg) ## You can make interop suck less by Explicitly state/document argument content. • Instead of long or int, use int64_t

Create a custom compilation ..... 508 Use Java sources in JVM compilations ..... 509 Configure interop with native languages ..... 510 Compilation for Android ..... 511 Compilation of the source set Receive C string bytes from Kotlin 676 Fix the Code 676 Next steps 677 Create an app using C Interop and libcurl – tutorial 677 Before you start 677 Create a definition file 678 Add interoperability word-frequencies, stopwords, stemming, and much more. ## Java libraries Since Kotlin provides first-class interop with Java, you can also use Java libraries for data science in your Kotlin code. Here are some examples

} } } } 用于 C 语言互操作隐式整数转换的编译器选项 We have introduced a compiler option for C interop that allows you to use implicit integer conversions. After careful consideration, we've introduced value = 1, toDate = today, options = 0 ) To use implicit conversions with native interop libraries, use the -XXLanguage:+ImplicitSignedToUnsignedIntegerConversion compiler option. You introduces several performance and size-related optimizations, along with updates in JavaScript interop. 尺寸相关的优化 Kotlin 1.9.0 introduces significant size improvements for WebAssembly (Wasm) projects. Comparing

e., dpkg-deb --contents fangorn.deb • Metadata file(s) to declare those contents • Modest tool interop requirements In short, declaring libraries installed on a filesystem ## Goals • ✓ A first step Bloomberg needs next-gen packaging metadata - Upgrading from pkg-config for project ⇔ project interop - Don’t need or want a unique solution! • About Bloomberg’s C++ More than 30K C++ projects, Upside: Easier CMake interop • Build system interop and freedom! - Generate via templated foobar.cps.in files and find/replace - Very common to see foobar.pc.in files now! - JSON interop commoditized at

kage=disable") } } } ## 用于 C 语言互操作隐式整数转换的编译器选项 We have introduced a compiler option for C interop that allows you to use implicit integer conversions. After careful consideration, we've introduced NSCalendarUnitDay, value = 1, toDate = today, options = 0 ) To use implicit conversions with native interop libraries, use the - XXLanguage:+ImplicitSignedToUnsignedIntegerConversion compiler option. You introduces several performance and size-related optimizations, along with updates in JavaScript interop. ## 尺寸相关的优化 Kotlin 1.9.0 introduces significant size improvements for WebAssembly (Wasm) projects