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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 a5 c/ F, v" s! i其中有一段如下! m& z; w2 H' N1 ?+ ^
ask turtles with [ infected? = true ]
8 q0 j Q. ^( g& x1 @6 O2 Q我原本以为这句会回传『所有』infected? = true 的 turtle
, s# r/ i& Y! G' G& N5 i但看结果似乎不是这样。/ x9 i4 R; A+ O4 ]3 a# x
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假设所有符合条件的有 5 笔7 d' j8 E x( t9 h! `; O& Z
有时候回传 1 笔，有时回传 3 笔，是不固定的9 M9 |1 F6 H9 d, h
回头查语法定义
8 W4 S* G! x; R7 }( T6 kwith
9 T8 Y: G2 r9 B+ V! i1 \7 I$ X. @agentset with [reporter]
! F& ]" P B! @3 fTakes 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.
b1 z, Q6 @/ c( {6 ?. c/ Z1 F2 Q它只说回传 agents satisfying the given condition G X' L2 D. p: K0 k
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6 u$ e- [8 Q& t" \
谢谢！* U' s( q5 T" L4 z- v S6 N
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楼主
发表于 2013-11-7 00:02:20
