distance: float,
弃用html2pdf.js,这个html转pdf方案能力是它的几十倍，更多细节参见新收录的资料
，这一点在新收录的资料中也有详细论述
In this talk, I will explain how coherence works and why its restrictions are necessary in Rust. I will then demonstrate how to workaround coherence by using an explicit generic parameter for the usual Self type in a provider trait. We will then walk through how to leverage coherence and blanket implementations to restore the original experience of using Rust traits through a consumer trait. Finally, we will take a brief tour of context-generic programming, which builds on this foundation to introduce new design patterns for writing highly modular components.
Think back to the hidden memcpys from Swift, earlier.。新收录的资料对此有专业解读