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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
7 g; d7 v5 h% V- R$ d0 a$ s其中有一段如下2 _* D5 B/ O( q5 H
ask turtles with [ infected? = true ]
4 P, e; c& W+ I7 ^我原本以为这句会回传『所有』infected? = true 的 turtle+ t8 C8 K) s/ g1 U
但看结果似乎不是这样。5 E. ], s* W( E3 Z5 Z
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假设所有符合条件的有 5 笔0 M* v( Q7 b( H! e. O4 n5 c( R
有时候回传 1 笔,有时回传 3 笔,是不固定的" x* q p/ @% H' k6 ?
回头查语法定义" ^2 B# ^) l$ c& n# D; o8 {" G
with 5 K [$ `; d% Q6 l9 }
agentset with [reporter]
/ O+ S0 Z- N0 |3 f/ ATakes 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.2 \' a( f5 o) m; x1 k
它只说回传 agents satisfying the given condition
& I: s6 S7 Z! q/ u9 _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 ? 9 x# V2 G% c2 w4 J( S9 J
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想确定一下
3 F4 j8 Z- v: M6 E谢谢!# A; C! u# `) I6 [
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