Copy makes it trivially easy to accidentally duplicate a Rust value that is actually a thin handle to a resource, resulting in null pointers. Just make a habit of avoiding it on exported wrappers. This can be a hard muscle memory to break since we usually want Copy wherever possible in normal Rust code.
In Python, you actually can’t do that because *args is always a tuple:。业内人士推荐新收录的资料作为进阶阅读
Amanda Silberling，详情可参考新收录的资料
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