About Me Current Focus {#course} The Why Favorite Quotes About Me I’m a 20 year old male born in South Korea, raised in Malaysia, Vietnam, and lived in the US. I’m currently...

What’s Next What’s Next You’ve successfully completed Learn Swift with Bob. Let’s have a virtual high-five. When you got started, I promised, you would come out programming in ...

ignoreDelete Example Scenario ignoreDelete ignoreDelete is an advanced folder setting that affects the handling of incoming index updates. When set, incoming updates with the...

Key Paths Introduction Problem Design Model Create Objects Your Past Introduction Swift 4 Key Paths Store Path Append Key Path Source Code Resources Conclusion Key P...

微支付通道 | Micropayment Channel 微支付通道 | Micropayment Channel Alice 为Bob 工作，兼职管理论坛。每当有人在Bob的论坛发帖，Alice会检查帖子是不是攻击性或者垃圾内容。但是Bob 经常忘记支付工资，所以Alice 要求每当她批准或者删除摸个帖子时立即支付工资。Bob 由于交易费拒绝了，因...

权限模型 问题起源 提议模式 角色合同模式 PDC 中的权限模型 权限模型 PDC 最重要的使命是在分布式环境中，确保所有参与协作的参与方遵循合同中所确定的权利与义务的分配，任何实体均不能游走于规则之外。隐藏在 PDC 背后的权限模型是实现这一目标的重要保障，本节将通过实例逐步讲解 PDC 中权限模型的设计，以及如何基于权限模型设计多方协作工...

@babel/plugin-transform-arrow-functions Example Installation Usage With a configuration file (Recommended) Via CLI Via Node API Options spec @babel/plugin-transform-arr...

5.2 Column Selection 5.2 Column Selection Let’s revisit our example all_grades() data defined in Chapter 4 : df = all_grades () name grade Sally 1.0 Bob 5.0 Alice 8.5 Han...

Health Statistics Health Statistics You’re working on implementing a health-monitoring system. As part of that, you need to keep track of users’ health statistics. You’ll star...

Transactions Requirements Best Practices Limitations Monitoring and Diagnostics Transaction Isolation Level Use Cases Multi-Statement Transactions Multi-Collection Transactio...