p := make_point(3, 7);
The bigger problem with the spec is that UnsignedImportMustBeDenied and SignedImportMayBeAccepted don't actually do anything. canImport is defined as P || Q. UnsignedImportMustBeDenied checks that !P && !Q = !canImport. SignedImportMayBeAccepted checks that P = canImport. These are tautologically true! If they do anything at all, it is only checking that canImport was defined correctly.
，这一点在whatsapp中也有详细论述
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Buffett also taught her the value of criticizing by category and praising by name—meaning leaders should recognize individual employees for good work but avoid singling out people when something goes wrong.
（二）拒不执行公安机关依照《中华人民共和国反家庭暴力法》、《中华人民共和国妇女权益保障法》出具的禁止家庭暴力告诫书、禁止性骚扰告诫书的；