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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3 y3 `: F2 _3 B8 i' Q' p
其中有一段如下( @5 J" w1 [' ^# P
ask turtles with [ infected? = true ]
7 Y/ t+ i. Y7 a, P8 R+ Y& M我原本以为这句会回传『所有』infected? = true 的 turtle
q" q2 x$ B1 X C7 r/ N7 v但看结果似乎不是这样。5 j) s* g& F- i* }0 E
8 s5 R% P7 O- e" n6 ~假设所有符合条件的有 5 笔
2 U5 D$ O R: x# s- g4 _6 G( F7 i有时候回传 1 笔，有时回传 3 笔，是不固定的) I0 U% b/ k" Z5 R$ m( q1 E% Y8 I3 z
回头查语法定义
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agentset with [reporter]% Y$ o0 E, h5 Q" Q8 ]* S [
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.' y9 m9 W) L I- }7 G2 i; K
它只说回传 agents satisfying the given condition
% `3 [+ i3 ^" ^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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想确定一下9 g5 q+ ]( `6 a4 `5 u) O
谢谢！
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楼主
发表于 2013-11-7 00:02:20
