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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 |5 ]$ M- `, D
其中有一段如下/ W2 R7 F- [0 S
ask turtles with [ infected? = true ]
6 ~- }+ `0 `: D1 Z8 Z4 z我原本以为这句会回传『所有』infected? = true 的 turtle
- M1 @9 x+ |4 ]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* r3 F2 t# W4 V! H' f: r! q' s
有时候回传 1 笔,有时回传 3 笔,是不固定的' x% F& n6 N5 I
回头查语法定义6 g( R. W! T0 F# {8 {1 w5 c
with " W, z ~6 _; e9 E
agentset with [reporter]
' c( T+ \& F, n& I1 _& G1 u! CTakes 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.
( \6 Z4 Y" N7 j0 Z6 e; ]它只说回传 agents satisfying the given condition) H$ J' r6 [ J$ _& M
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 ? / K- M: O$ ]. Q3 e. f# h# P. M
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想确定一下
5 f: a* n9 j7 z8 J/ E5 \谢谢!
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