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新手发问超简单问题,目前还处于研读范例码的阶段,边测边看结果来理解程序' |" e$ n; ?* _. o5 [! i4 q9 ^6 e
其中有一段如下- \/ L7 o* e# w+ `. ?, x( W
ask turtles with [ infected? = true ]
0 e" Q% }0 n) Z, v5 Y# l7 e我原本以为这句会回传『所有』infected? = true 的 turtle. s- H# c; p2 v+ k0 j" U' s
但看结果似乎不是这样。
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5 C& q. G* G/ J假设所有符合条件的有 5 笔
/ \2 k! i$ S- U# |/ a: O有时候回传 1 笔,有时回传 3 笔,是不固定的: K/ C' }" a/ t2 x6 |6 s2 g8 i
回头查语法定义
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% \7 Z0 h- I* t0 eagentset with [reporter]0 S# I* g2 S& S+ h$ d
Takes two inputs: on the left, an agentset (usually "turtles" or "patches"). On the right, a boolean reporter. Reports a new agentset containing only those agents that reported true -- in other words, the agents satisfying the given condition.
& Q) X) j m* S$ l) g) K它只说回传 agents satisfying the given condition5 L& j3 d* }3 V: q2 T+ B
是否 with 回传的是『符合条件』的数据,而不是『所有符合条件』的数据 ?
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, W2 T0 r/ s5 J3 }; F想确定一下0 ? H1 V( m. B' }- k! l7 }
谢谢!
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