|
|
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; d* E5 w4 ] d$ V, b4 X
其中有一段如下, e$ f& I% s, j- K( `- W7 m
ask turtles with [ infected? = true ]
6 A3 z9 M# \2 X我原本以为这句会回传『所有』infected? = true 的 turtle/ E: n3 S6 K+ N
但看结果似乎不是这样。1 N( {* z2 s/ y7 ~/ e% _
5 h6 M* h* i! l" I; z$ L假设所有符合条件的有 5 笔
1 ~ P8 O( j- [* G有时候回传 1 笔，有时回传 3 笔，是不固定的9 O' f2 G, _2 X& R
回头查语法定义# m1 `. e1 u+ U5 p# Q. z
with
& _5 n' l4 A& D+ `: U8 z4 qagentset with [reporter]4 c8 X6 _! A1 I3 N' V, V. a, ?: 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.
( U$ E Z7 b; y1 Y6 H/ m; K1 V它只说回传 agents satisfying the given condition7 m/ y0 T+ X1 p5 U7 Z# t* [! S
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 ? + k. l- [ t# ~7 D( P' F, ]7 P
) @6 }! |! W/ _$ s
想确定一下( H7 J- @! v5 e6 A, L9 W6 h& G$ d7 S6 [
谢谢！
" [: @0 N7 G; j/ m9 R6 q |
|
[复制链接]
楼主
发表于 2013-11-7 00:02:20
