为什么 Union + Intersection 类型下子类型检查不可判定?
"There are no solved problems; there are only problems that are more or less solved." - Henri Poincaré
"There are no solved problems; there are only problems that are more or less solved." - Henri Poincaré
"The best way to predict the future is to invent it." - Alan Kay
"A language that doesn't affect the way you think about programming is not worth knowing." - Alan Perlis
"The best tool is the one that disappears into the workflow." - Jef Raskin
"The art of being wise is the art of knowing what to overlook." - William James
"Any sufficiently advanced configuration is indistinguishable from code." - Adapted from Arthur C. Clarke
"Simplicity is the ultimate sophistication." - Leonardo da Vinci
"The best time to plant a tree was 20 years ago. The second best time is now." - Chinese Proverb
"Any sufficiently advanced technology is indistinguishable from magic." - Arthur C. Clarke
"A language that doesn't affect the way you think about programming is not worth knowing." - Alan Perlis