1.在类中包含任何表示State的var属性都会破坏您的功能。Compose State必须能够比较类的旧示例和新示例，...
Regardless of which editor I’m using, it’s common for me to change the font size depending on whether I’m using my MacBook Pro’s Retina display or the non-retina 27” Thunderbolt Display at my desk. It’s a small thing, but, when I started usingEmacs, one of my biggest annoya...