`@receiver isNil ifTrue: `@nilBlock -> `@receiver ifNil: `@nilBlockIn fact, both versions work—but they apply different filters to the target node. Try to remember which one.
If you’re looking for a machine that you can actually use meaningfully, the Neo has the Air beat. It has two USB-C ports, 16-hour battery life, a real keyboard, trackpad and the ability to run macOS with proper multitasking. $599 won’t even get you an iPad Air with a keyboard and trackpad, which costs you an extra $270.
，这一点在PDF资料中也有详细论述
What is this page?。纸飞机下载对此有专业解读
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