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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
, Y6 H( U8 c( S5 h其中有一段如下3 _$ u, |0 R2 d" C) ^+ t6 H" y
ask turtles with [ infected? = true ]
+ x n( d: i, T0 m: |! c我原本以为这句会回传『所有』infected? = true 的 turtle
& n0 B) _2 v! S2 y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
, l& R2 h. O$ B! E" V$ d" ]4 ]9 G有时候回传 1 笔,有时回传 3 笔,是不固定的* ]$ a" I! A1 s
回头查语法定义
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agentset with [reporter]& O% y* E9 \3 G+ C
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.
' I/ \- c# ^$ d4 F" y8 c它只说回传 agents satisfying the given condition w$ ?+ j* @; a$ C6 V7 r
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 ? % Z6 }7 e. Z+ r9 H
3 W+ g; n! _ Y3 o, }8 ?3 M J想确定一下
. S# W& m/ n1 o0 G* d- m$ T/ Q谢谢!
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