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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
0 f- r3 P. t, `- G \$ u E( Q0 v其中有一段如下( w3 d% R7 E4 K" r
ask turtles with [ infected? = true ]
# E; g v1 ^8 _; R) U/ C我原本以为这句会回传『所有』infected? = true 的 turtle
4 p6 l6 J+ c) v9 X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: z, A, @' T! B( F( ]: j, s
有时候回传 1 笔,有时回传 3 笔,是不固定的8 u; e6 @- c* ~2 o! t
回头查语法定义
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agentset with [reporter]
3 e+ g% ~0 {6 m: b1 M8 d, JTakes 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., V; P0 x2 w1 [! @
它只说回传 agents satisfying the given condition
+ A& u- A5 \; b2 |, s3 q# I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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0 @9 n! F. E" L/ K# _! f想确定一下
, u7 K; Y. R( ~& Z1 {( B谢谢!4 G% W j( W0 x! g+ J3 y( i; r
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