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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
9 @/ Y2 M6 |, y$ K! M2 w6 C& r其中有一段如下
) {& H4 f, K$ Xask turtles with [ infected? = true ]
( x9 h+ a9 S& `4 Q4 e7 s我原本以为这句会回传『所有』infected? = true 的 turtle
$ S& V+ o, o* b- `但看结果似乎不是这样。6 a, Z, w! B3 _: A9 [- V, ~$ |
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假设所有符合条件的有 5 笔
/ c6 K& @- j4 o/ ?" R: C4 S2 v n有时候回传 1 笔，有时回传 3 笔，是不固定的
$ x- Y" L/ L% r+ F& ~3 Q8 F$ i回头查语法定义; f7 ?6 B# P) d T5 b9 x
with , g3 g$ w/ k3 S w* m3 q4 M* E0 S
agentset with [reporter]8 J# D1 T4 \* B8 o, H: x6 f' h+ H
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.
! p: c: o* M( w5 `) m: _它只说回传 agents satisfying the given condition
9 C( S: f ?7 T, {" ^6 Q. j! T6 G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 ? " ]: X$ H" q4 R4 _1 z1 T
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想确定一下4 J6 X# N: _% [2 x1 m6 G, [0 q
谢谢！
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楼主
发表于 2013-11-7 00:02:20
