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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: d' d" V; H5 B
其中有一段如下 x/ d# s2 i- `7 a; C% ~ G1 H% b
ask turtles with [ infected? = true ]
) Z1 n% e2 P4 _' o5 h. H& W8 W% g我原本以为这句会回传『所有』infected? = true 的 turtle
3 V+ c0 d* M' ~" w但看结果似乎不是这样。
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) K# e. Q. Y6 |' S3 r8 h& h假设所有符合条件的有 5 笔' G2 C" i8 ?5 V+ g* s; N3 d
有时候回传 1 笔,有时回传 3 笔,是不固定的5 R; Q2 d4 Y3 H3 e- b
回头查语法定义- Q+ p. q7 s. o' X1 O8 r
with
- |+ I" G4 k# _agentset with [reporter]
5 y5 P/ }9 P$ V1 f) Q" TTakes 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.1 Q8 ?5 d+ e0 Q. f2 N4 e
它只说回传 agents satisfying the given condition
! f! V/ T$ C& K; u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 ? 6 Y7 s) Z* _6 i* I
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想确定一下
P3 [% ~: e% o谢谢!
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