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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
5 @! u% z! `( h) |其中有一段如下" d( l% o% Y2 e( W3 H6 Y
ask turtles with [ infected? = true ]
0 E& @+ ]! A0 l& P3 ^/ d我原本以为这句会回传『所有』infected? = true 的 turtle
2 M9 ~# M2 r/ D9 p9 @' T1 Q% W( S但看结果似乎不是这样。! c! a% g* Q( g3 V
/ ?5 Z+ j/ K: s2 ?* N) y假设所有符合条件的有 5 笔
3 o% ^, N+ J1 a. e% @有时候回传 1 笔，有时回传 3 笔，是不固定的
6 {+ x8 A5 a( ^! r! m" K回头查语法定义
2 A8 Q$ O9 ]/ p0 g8 C4 @with ' ]# u& J6 W: ~* `$ @0 O6 U
agentset with [reporter]7 F* C6 h& \9 n4 J
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. F# ]6 s, h/ V' u" L; J
它只说回传 agents satisfying the given condition& t! y7 Z i' U% O* D
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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. @6 s9 V/ j9 _- B% M" J' F8 |想确定一下5 d) S; g y8 Q# \. }# Q+ }
谢谢！" g j- G/ e% p3 V8 g, [2 {
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楼主
发表于 2013-11-7 00:02:20
