// Equivalent — but the grouped form is cleaner
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。snipaste截图对此有专业解读
Typically, I approach this in the same way as language design: Start with applications first! Learning to build anything requires you to get some rough, incomplete, flawed understanding of your domain to get it to work at all. If you solve several sets of problems in a domain, you'll see the shape of things you have to do in multiple places. Writing a program requires making the details more concrete than merely writing about it on paper, leading to crisper understanding. This is why programming really interests me.
self._id = uuid.uuid4()
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