Москвичей предупредили о резком похолодании09:45
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，这一点在heLLoword翻译官方下载中也有详细论述
transform(chunk, controller) {
`@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.