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第十九条 选举居民委员会，采取全体有选举权的居民选举方式的，有选民的过半数参加投票，选举有效；采取每户派代表选举方式的，有户的代表的过半数参加投票，选举有效；采取居民代表选举方式的，有超过三分之二的居民代表参加投票，选举有效。
。业内人士推荐夫子作为进阶阅读
Transforms can be stateless or stateful. A stateless transform is just a function that takes chunks and returns transformed chunks:
`@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.