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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. D# W: [: I% V
其中有一段如下 {; F* W ?9 u' A, e
ask turtles with [ infected? = true ] / Q, q7 i' a& {, T0 G) Q( S
我原本以为这句会回传『所有』infected? = true 的 turtle8 u! h+ ?: y- P+ c
但看结果似乎不是这样。; S; T2 T0 n9 p; @
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假设所有符合条件的有 5 笔
t4 m4 @ @! e* b有时候回传 1 笔，有时回传 3 笔，是不固定的
$ r: J6 \% i# Y: x回头查语法定义. x8 c7 b* d$ @7 x, p$ n- g6 l
with
4 R/ U; s7 P' p; X; j" q% y1 x x$ i6 Ragentset with [reporter]
6 y# M c# S! E" m3 s) KTakes 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.
% I7 D _, _( _3 J6 I它只说回传 agents satisfying the given condition
: t( y7 D6 Q8 {6 m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
; M; |8 K8 x" k3 ?8 C) m7 C谢谢！
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楼主
发表于 2013-11-7 00:02:20
