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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9 R/ ~3 Z( o/ M: H. z( J
其中有一段如下) q8 Z7 ]0 O* \. X: \5 i0 |3 |
ask turtles with [ infected? = true ] 6 d! m% U5 d9 J1 c4 l/ h, N6 x
我原本以为这句会回传『所有』infected? = true 的 turtle0 f3 p( J) L; W; f9 G8 B g
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: j9 C- U( U7 |9 k6 R" P7 C
有时候回传 1 笔,有时回传 3 笔,是不固定的
2 x& y* Z+ Z( e$ G3 ]! o8 e回头查语法定义
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agentset with [reporter]
, d; ^* B I8 v+ h t" XTakes 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." v7 S3 J' h) J6 c8 H' X
它只说回传 agents satisfying the given condition c) i9 h% E* d% ^
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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想确定一下. Y5 a# @! o8 p) O2 [
谢谢!* \0 X0 h5 }2 i2 k) U% m
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