nt max() std::cout # Smart Pointers std::cout ## Back to Basics d(std::logical std::cout << "myVec::"; for (auto i: myVec).std::cout std::cout << "\n"; std::vector myVec2); Rainer Grimm Training, Coaching, and Technology Consulting www.ModernesCpp.net ## Smart Pointer A First Overview std::unique_ptr – Exclusive Ownership std::shared_ptr - Shared Ownership std::weak_ptr – Break of Cyclic References Performance Concurrency Function Arguments and Return Values ## Smart Pointer A First Overview std::unique_ptr – Exclusive Ownership std::shared_ptr - Shared Ownership

RUST CHINA CONF 2023 第三届中国Rust开发者大会 6.17-6.18 @Shanghai ## Rustle: the first static analyzer for smart contracts in Rust Matthew Jiang Director of Security Team @ BlockSec Outline 1 Motivation 2 Background Conclusion ## Motivation Why do we develop Rustle? ## 😍 ## Motivation Emerging chains with Rust as smart contracts language ## SOLANA NEAR NERVOS Polkadot CosmWasm ## Limitations of manual audit • Time-consuming IR Back-end x86 ARM BPF WASM LLVM Pass: rich APIs to analysis the LLVM IR Blockchains with smart contracts in Rust ## Near Rust ![Image](/uploads/documents/b/7/5/3/b7538df45ecb85ab146525f0c5fa3eb7/p10_1

## 微服务的设计原则 与生态系统 王磊 ## 关于我  Ruby Gems 开发实战 ![Image](/uploads/documents/b/2/2/d/b22d07eaea0b5b3936e4c395f448894f/p2_3 国内较早倡导和实践微服务的先行者 - 对于自动化测试、持续交付、DevOps有丰富的实践经验 西安DevOps Meetup 联合发起人 ## 议题 • 微服务架构的核心 • 微服务架构设计原则 • 微服务架构生态系统 ## Are you using microservices? ## Microservices are entering mainstream 68% of organizations com/articles/single/3652-what-is-devops ## 什么是演进式架构？ 架构一旦确定，很难改变 ☐ ☐ ☐ ☐ ## 什么是演进式架构？ 支持增量式变更作为第一原则 · 演进是动态平衡 · 痛苦的事情提前做 · 运维意识是关键 ## 演进式架构 - 动态的平衡 业务 拥抱变化 动态平衡 团队 技术 架构的演进基于业务、技术和团队的平衡 ## 演进式架构

@Shanghai Rust China Conf 2023 ## Candid: the interface description language of the Internet Computer smart contracts -- How DFINITY uses procedure macro to extend Rust Yan Chen DFINITY Foundation ![Im to extend Rust language safely without modifying the compiler • DFINITY has a Rust SDK to develop smart contracts on the Internet Computer • We did all the complicated work, so that developers don’t have

different about Inslee’s administration is how they’re going about it. They’ve dubbed their new approach SMART—Specific, Measureable, Attainable, Relevant, and Time-bound. In other words, they want to use Scrum

9_2.jpg) # Six ways for Implementing Math Expressions Calculator A walk through polymorphism, smart pointers, templates, concepts and more Amir Kirsh  << endl; delete e; Why do we use new and delete to begin with? Shouldn't we use smart pointers? First improvement attempt: unique_ptr ## Let's try it together Live Coding! ## Let's mandatory for Polymorphism! - Prefer using smart pointers for internal members - Try to hide your smart pointers, exposing value type semantics (Treat the use of smart pointers as an implementation detail!)

cryptocurrency, took a different approach, integrating many of the same characteristics as Bitcoin but adding smart contracts to create a platform for distributed applications. Bitcoin and Ethereum fall into a class chain and even digital music delivery. Fabric is the first distributed ledger platform to support smart contracts authored in general-purpose programming languages such as Java, Go and Node.js, rather than domain-specific languages (DSL). This means that most enterprises already have the skill set needed to develop smart contracts, and no additional training to learn a new language or DSL is needed. The Fabric platform

cryptocurrency, took a different approach, integrating many of the same characteristics as Bitcoin but adding smart contracts to create a platform for distributed applications. Bitcoin and Ethereum fall into a class chain and even digital music delivery. Fabric is the first distributed ledger platform to support smart contracts authored in general-purpose programming languages such as Java, Go and Node.js, rather than domain-specific languages (DSL). This means that most enterprises already have the skill set needed to develop smart contracts, and no additional training to learn a new language or DSL is needed. The Fabric platform

总结：如何规避代码风险 ## 如何尽量规避风险 1. 默认不相信外部输入，需要进行检查； 2. 内部逻辑也应该做检查，例如购买东西以后余额应该降低而不是升高； 3. 奥卡姆剃刀原则，用能达到目的的最简单的设计、配置，减少缺陷的可能性； 4. 最小权限原则，仅用恰好够用的权限去执行代码，减少越权漏洞； 5. 定时清理缓存数据，以及非业务代码的固有数据，减少入侵风险； 6. 在发布代码前，使用 Bandit 工具检查代码，规避最常见的不安全写法；