Pin (without.boats)

Article summary

The article discusses the concept of Pin in Rust, a foundational building block for the language's async ecosystem, and how it addresses the issue of self-referential structs. The author explains the history and development of Pin, including the problems it solves and the challenges it presents. The article also touches on the concept of value identity and how it relates to Pin. The author plans to elaborate on potential solutions to the complexity spike caused by Pin in a subsequent post.

Main themes

• Rust async ecosystem
• Pin and self-referential structs
• Value identity
• Language design
• Async programming
• Rust development

What commenters say

• The problem of self-referential structs in Rust could be solved by restricting the power of mutable references, which currently allow moving values out of them.
• The development of Rust's async features is slow due to the complexity of the problem and the need for careful consideration of different design approaches.
• Including the language name in the title of the article would be helpful for readers to quickly understand the context and relevance of the post.
• Rust's focus on async and web development is perceived as imbalanced by some, who would prefer more attention to be given to systems programming and other areas.
• The concept of value identity is related to the StableDeref/yoke approach to self-referential structs, where a value is constructed at a stable address and accessed through a pointer.
• The development of Rust is driven by the interests and availability of its contributors, rather than a centralized direction or leadership.
• The lack of a clear lead or direction for Rust's async development is seen as a hindrance to progress and stability in this area.
• Some argue that Rust's async features are not well-suited to the language and that alternative approaches or languages might be more effective.