知乎，让每一次点击都充满意义 —— 欢迎来到知乎，发现问题背后的世界。 @MarkusMeskanen: because the object is immutable, and when you mutated it in place you could not specialise it within a subclass. The coming technological progression offers an opportunity for metropolitan areas and states to develop transportation programs made to move more and more people, plus more affordably. https://ddjayplotssonipat.fitness.blog/2025/09/13/aipl-lake-city-sector-103-gurgaon-ultra-luxury-living-on-dwarka-expressway/