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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
& j8 R+ X" E/ Q, ]9 [其中有一段如下' R* o; j8 |8 v9 K8 c
ask turtles with [ infected? = true ] ( l# p" m5 v! s5 }- j C0 s7 U
我原本以为这句会回传『所有』infected? = true 的 turtle5 y H0 m9 Z2 C8 z$ a" N" ~
但看结果似乎不是这样。3 |7 r: [5 V2 c" Q m# U$ `
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假设所有符合条件的有 5 笔( T% [2 e1 A( [6 s8 r0 ~2 ~6 p6 a) l' i
有时候回传 1 笔，有时回传 3 笔，是不固定的: ~8 e8 o7 S- s0 Q) a$ L# E0 k
回头查语法定义
5 V; U! p( C5 v' w1 a7 Pwith
1 d- [9 G( s5 H3 X. P1 jagentset with [reporter]
8 |6 v& U% m" e; n. hTakes 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.2 ~' S) ]. w/ A
它只说回传 agents satisfying the given condition
& w( I3 M& Z7 h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
" K+ I' n; x- Q' V2 U谢谢！- F ?5 U9 q: D! i! ~
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楼主
发表于 2013-11-7 00:02:20
