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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' o! o' E1 S1 s$ @5 b
其中有一段如下7 \5 l! o( m3 o1 F
ask turtles with [ infected? = true ] & a7 I% m. x4 e3 A2 ^: |
我原本以为这句会回传『所有』infected? = true 的 turtle E! ~ u0 D9 J; w
但看结果似乎不是这样。, o' g, ~* y3 {$ i2 h- D
3 i! M6 u$ h5 n1 _1 L% Z假设所有符合条件的有 5 笔& J+ n0 Z5 ^2 Z6 M2 U
有时候回传 1 笔,有时回传 3 笔,是不固定的
, B# {) E! z! M回头查语法定义/ v x5 N/ `5 R' t, x; z/ r1 h( w
with 4 c4 Q5 r) d3 ]7 I
agentset with [reporter]
- }) O: O9 q* I$ ] W+ A- _- K' nTakes 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.& s4 K. C, Z4 `
它只说回传 agents satisfying the given condition a! E0 ?5 n) y% Q+ H
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
3 W5 B' H+ I& A1 n/ E谢谢!) s" `6 o: E" r! R6 i' L
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