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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
, a1 Z: P' n" x4 D, M; a其中有一段如下
9 D$ M6 x9 m0 gask turtles with [ infected? = true ]
! D+ Y( \! r3 @; K& f! l, s9 {3 ~我原本以为这句会回传『所有』infected? = true 的 turtle
/ S' `7 Y! [. y! I% {4 d但看结果似乎不是这样。- ?9 K7 P$ E; [2 }7 X. H. f$ I
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假设所有符合条件的有 5 笔
2 }: a. G. h' E6 C5 i) P有时候回传 1 笔，有时回传 3 笔，是不固定的1 E5 L' t# ]1 i2 q ~/ w
回头查语法定义' Q `6 o B) u( p5 v
with 9 S P+ m4 c8 c% I7 [
agentset with [reporter]
+ G6 u" N3 \. _5 |' o5 _$ m0 n. c- aTakes 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.
d1 h# E) F- B; R它只说回传 agents satisfying the given condition
% M/ X2 `. D8 s; D& w) `& u9 [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 ? * f7 b. w9 w; R: t
( |$ I, h9 X' x; { s; N3 g想确定一下& p- Z6 n9 ?2 V. `! _9 d2 Y3 a" n
谢谢！
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楼主
发表于 2013-11-7 00:02:20
