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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# j- r: B, |: F" G
其中有一段如下- ]6 {9 H, r; e' V" @
ask turtles with [ infected? = true ]
, l( b; _2 e" C( G3 s, L我原本以为这句会回传『所有』infected? = true 的 turtle) u+ c# s" M5 K* k3 V
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9 F$ i. U& v4 G& S# d2 L3 Q
有时候回传 1 笔,有时回传 3 笔,是不固定的; |: K4 u3 H0 Q$ @; X! b Y
回头查语法定义
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- {5 t$ z& g$ n0 U' O' N Pagentset with [reporter]! M X1 W0 d3 _+ D( d. `, v% E# o8 m
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.: x5 L9 Q6 b w7 z7 i
它只说回传 agents satisfying the given condition
: F5 a3 E' p1 c! H' a6 g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
' c+ t- u( C2 w( n! y7 o8 u/ [1 }谢谢!, u- T- Z! @( I
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