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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
- {3 X* G; f9 c8 J) N其中有一段如下' G! U+ e0 k/ `8 [& i* I, {9 G
ask turtles with [ infected? = true ]
! n! p+ i* Q; p D2 J7 b我原本以为这句会回传『所有』infected? = true 的 turtle
. y7 F0 T7 ~# G- Z p( p但看结果似乎不是这样。
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假设所有符合条件的有 5 笔! ~ t+ [' j* D- r! m) K+ L
有时候回传 1 笔,有时回传 3 笔,是不固定的) p5 M) W. h1 w D9 P; P3 S
回头查语法定义
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agentset with [reporter]& @4 l2 ]. h4 ^/ P" f
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." B! x( [7 X# \2 ]$ |4 {1 K/ K
它只说回传 agents satisfying the given condition
) S l3 p5 [$ y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 ? 8 R' ` q4 R j2 o- H4 c5 U
8 ?% Y5 Q4 ^3 ~3 q b8 Y) J. D想确定一下' c! l. E7 m4 d7 s; a
谢谢!
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