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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
6 ~1 P' M& |1 Z1 h; @- M其中有一段如下: `& v& ~/ c/ s% I& S
ask turtles with [ infected? = true ] 0 z6 {9 `" b1 |9 p
我原本以为这句会回传『所有』infected? = true 的 turtle
! v4 ^+ g8 H7 m& N7 W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
6 t# s& R- F$ m# V5 _' O. v9 X: d有时候回传 1 笔,有时回传 3 笔,是不固定的
6 h/ X7 G0 W/ J6 s8 V5 _! [回头查语法定义7 X9 V2 c7 I1 r. m6 p
with $ H4 g p# l- N8 z
agentset with [reporter]
2 `% [) L4 a: z8 B$ \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.
/ E& v3 {: o+ w: O5 ~6 J. K' ]它只说回传 agents satisfying the given condition
2 _ `' U* n: M Z ]4 `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 ? 4 V) w- u' s' v
y5 S" C1 E* C1 |+ p c _. l2 V
想确定一下9 F& ~. K* E4 e/ [6 w
谢谢!
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