In 1992, in a small shop in British Columbia, a sign maker named Blair Gran stared at a wall full of half-finished jobs and felt something click. Sign-making was treated like a commodity — orders in, banners out — but as thousands of signs came through his shop, he couldn’t help but notice the difference between the good ones and the bad ones. He could see that every sign that left his shop was either helping a business get noticed, or letting it disappear in plain sight.
“The DOW agrees with these principles, reflects them in law and policy, and we put them into our agreement,” Altman wrote in the post.。业内人士推荐新收录的资料作为进阶阅读
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Furthermore, specialization only relaxes but not completely removes the rules for overlapping implementations. For instance, it is still not possible to define multiple overlapping implementations that are equally general, even with the use of specialization. Specialization also doesn't address the orphan rules. So we still cannot define orphan implementations outside of crates that own either the trait or the type.
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