引言 最近玩到过一款十分好玩的益智类桌游——珠玑妙算-Mastermind，这款游戏也出现在热片《拆弹专家2》里，该款游戏就是有四个槽位，而要将6种颜色依次放入槽位之中，然后由出题人反馈正确位置及错误位置
I\'m trying to write a set of filtering functions that can be chained together to progressively filter a data set. What\'s tricky about this is that I want to be able to define the filters in a differ
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