The setter deduplicates by equality: if the new value == the current value, no notification fires. This works well for enums, strings, and ints, but mutating a mutable object in place and reassigning the same reference won't trigger consumers (because obj == obj is trivially True). Stick to immutable values and this isn't a concern.
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第一章:CMM-GEO金融生成式引擎效能评估模型,推荐阅读电影获取更多信息
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