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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8 |4 B' X' l- h4 s- S+ }
其中有一段如下. K) P$ Z) @' N- N9 D
ask turtles with [ infected? = true ] 5 T* H3 f# v4 `( d) ?+ s
我原本以为这句会回传『所有』infected? = true 的 turtle
1 j# T- \( X. A" [/ o! L但看结果似乎不是这样。
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{7 h1 V1 a- H* K4 Z* _8 d假设所有符合条件的有 5 笔
: B" c% l( n) k1 O- h8 O有时候回传 1 笔,有时回传 3 笔,是不固定的! S6 Z, F' b7 D% u
回头查语法定义3 [' ^6 m2 ~) V7 H" b
with
+ I/ l) U; a4 n) p* M1 d- F+ V8 {agentset with [reporter]1 h$ [. p. b5 \6 T+ n" S/ 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.- n! v4 r. M6 h
它只说回传 agents satisfying the given condition$ m$ C) n$ \- O$ T3 F& I% L5 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 ? $ z% X+ m9 W" {% b
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想确定一下: Y3 U2 r0 |- l+ Q
谢谢!
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