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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 z8 m* D" V1 L( `/ t, b其中有一段如下 \$ G/ x, c1 K) [/ L, q
ask turtles with [ infected? = true ] . I/ l" L7 T% s0 J* }
我原本以为这句会回传『所有』infected? = true 的 turtle& N# |$ U4 ?3 d) f
但看结果似乎不是这样。9 _$ |; M1 B @! [8 }
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假设所有符合条件的有 5 笔' \" C$ C3 J% O
有时候回传 1 笔，有时回传 3 笔，是不固定的
* W7 D. ~& F( n- x% Y3 O1 A0 z回头查语法定义( {) W5 Y- `2 S% z5 ~! U
with " |( O X ]; S+ Y
agentset with [reporter]
' J. _$ g3 P4 ]5 }$ S: _5 vTakes 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.! q0 T0 h3 N G' h! y
它只说回传 agents satisfying the given condition
! ^; f. B( t7 Q% r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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* C* Z! s- `+ ?# Z0 c7 z; t想确定一下
( [+ f: u# _' ?7 n谢谢！# d: n" j) G4 W1 z! t
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楼主
发表于 2013-11-7 00:02:20
