|
|
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 J- F+ z& a& M$ v7 K其中有一段如下% W' ], m! S8 K6 ?
ask turtles with [ infected? = true ] 3 `, }3 R6 O* B' N2 {
我原本以为这句会回传『所有』infected? = true 的 turtle) i4 O$ e0 h/ C: e+ P9 t; Z7 S+ G. R
但看结果似乎不是这样。
8 P8 \7 D5 |0 t" {
7 Z1 V$ c& i* D& m假设所有符合条件的有 5 笔4 `; i/ z6 D! W5 T7 z W* ?
有时候回传 1 笔,有时回传 3 笔,是不固定的
* [# k7 k, m# ?8 f9 {' ]5 l回头查语法定义
8 n& J' d3 _) I P1 z' `9 y' _* ?with 0 Y! ~) X& V% q
agentset with [reporter]
$ R; T* {8 i: z# O- S MTakes 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.
/ q: t+ f6 k1 U3 o! v它只说回传 agents satisfying the given condition
; u, w$ R( I- N- [9 ]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 ?
, a9 S- o8 E1 C* ?8 |
6 a4 l2 U& R/ o% R, o想确定一下
i. Q: d( j" }; {3 K7 ` x# U/ }谢谢!
D& t+ |3 j* N5 D+ h5 c% I$ g |
|