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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
/ g3 X4 D! q& K" l7 {其中有一段如下3 Z& S! |) W1 s! K8 w9 j
ask turtles with [ infected? = true ] ) E+ O. O6 G5 j
我原本以为这句会回传『所有』infected? = true 的 turtle7 a5 n5 H" ]; [* M
但看结果似乎不是这样。: l: P+ ` l9 f+ D
! Q, s: z2 q4 z3 p假设所有符合条件的有 5 笔. x5 R+ k# K$ B/ w
有时候回传 1 笔，有时回传 3 笔，是不固定的
' G5 l9 W. H2 l5 G回头查语法定义8 u- M% n$ _. P9 V
with ) C& ~1 T: F l
agentset with [reporter]$ V, C3 o& e' ?- p9 f! e
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.
. g% ^3 m; O* O它只说回传 agents satisfying the given condition
; n. u8 I+ s% R" ^: W0 y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 ? ! t- c3 W8 {5 }' x" q# V( `* y: p: b
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想确定一下! |4 N1 P; Z7 {1 Z4 m. @4 X2 h
谢谢！) D" K; O7 |+ n. I7 O
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楼主
发表于 2013-11-7 00:02:20
