|
|
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0 P+ h; N/ J/ c6 w3 L0 `
其中有一段如下5 g( `: @; u. C' f
ask turtles with [ infected? = true ]
* @1 N% j% f* C' ]# S! H我原本以为这句会回传『所有』infected? = true 的 turtle
3 r" i4 V! B: v( s4 C但看结果似乎不是这样。
- s3 B2 V* I( w) f; B! m; j- m; ^ \- l4 D5 S% s! \. X1 O( [
假设所有符合条件的有 5 笔
9 s, v: A' G* t; U有时候回传 1 笔,有时回传 3 笔,是不固定的6 W. G+ h, X" Z1 ^) V& R% O/ L
回头查语法定义' S2 [' P2 f O
with
1 h$ U$ }4 ~8 x r! l( |% v# Cagentset with [reporter]8 b7 [+ q+ e* F" u# ^+ Z3 e% t
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.
+ @8 I& u, \5 `" `3 k. _3 {2 a它只说回传 agents satisfying the given condition" p- G/ G/ g7 j& _) J7 T$ f
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 ?
6 I6 A! j. }: Z, y& U$ T' |) N: E" |7 R6 t8 w! e
想确定一下
& i* g+ q0 A1 z7 w谢谢!4 I8 L8 h! Q! Z) }/ U% o6 _
|
|