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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" y) {: ^6 K/ [8 s
其中有一段如下* \5 M+ `& C' C
ask turtles with [ infected? = true ] 7 r( @' R, I: l
我原本以为这句会回传『所有』infected? = true 的 turtle
3 y3 n6 i* z" R$ F A但看结果似乎不是这样。
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/ [. j* O) S; `4 }假设所有符合条件的有 5 笔
/ C) u- F. Y' O2 a1 l' R有时候回传 1 笔,有时回传 3 笔,是不固定的4 m0 G" p2 Y; y' I% V% V4 @
回头查语法定义
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* T' C: d2 I% x# b$ q' G, E/ hagentset with [reporter]4 R ?+ @: A+ a$ G* [" k7 r
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.
) P2 ~* r4 ]3 _, W它只说回传 agents satisfying the given condition J2 L3 V3 a& I. y. p
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
6 S$ \# _8 A2 X& P& g) g( ^谢谢!
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