## +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

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

Experimental API Markers 313 Reference 319 Keywords and Operators 319 Grammar 325 Java Interop 344 Calling Java code from Kotlin 344 Calling Kotlin from Java 358 JavaScript 369 Setting Kotlin? Take a look at the Getting Started page. Suggested documentation pages: — C interop — Swift/Objective-C interop Recommended tutorials: — A basic Kotlin/Native application — Multiplatform Project: tabular data inspired by Python's ggplot. ## 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