Create your own custom use-case
``@receiver isNil ifTrue: ``@nilBlock -> ``@receiver ifNil: ``@nilBlockOr maybe with single backticks?
，这一点在heLLoword翻译官方下载中也有详细论述
Nowadays, there’s really no difference between a Wi-Fi booster and Wi-Fi extender - they’re just different names for the same thing. Previously, however, Wi-Fi boosters were devices that received signals from wireless routers, broadcasting them to another network. This essentially extends the range of the signal. Wi-Fi extenders expand the coverage within your home’s Wi-Fi network, but often you will see extenders described as boosters.
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