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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
( \9 v( x5 c0 K! r# O' W5 F9 A9 c/ N# ^其中有一段如下5 `) B- Q& \2 J& a/ d2 H9 S) B- `, t
ask turtles with [ infected? = true ]
t- \7 R0 h% A! ^6 F8 H我原本以为这句会回传『所有』infected? = true 的 turtle( K/ }0 h) ~8 W: u
但看结果似乎不是这样。4 P) Z8 z! p& L% k4 X- m4 E
' g4 @7 N, G3 M" i0 ?5 Z' c假设所有符合条件的有 5 笔+ ]" l# a+ ~8 l! R: }! h
有时候回传 1 笔,有时回传 3 笔,是不固定的
8 s8 q, \" x# @! t回头查语法定义
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agentset with [reporter]
6 |( u; D; s) L4 }( _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.
# ^ u+ n3 n5 d- `) {9 L它只说回传 agents satisfying the given condition" Y: A" b9 v1 O
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 b M& O3 K) e
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想确定一下! ]' Q; |; k9 F1 a0 h5 g) d+ C K
谢谢!
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