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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
- l& Y; a P4 l7 A其中有一段如下1 \* j. p; d L' M/ m
ask turtles with [ infected? = true ]
5 [0 Q7 u' ?9 A3 D% a, ]2 y; v我原本以为这句会回传『所有』infected? = true 的 turtle
, G. K/ ?8 ^ @* l! p* V. c但看结果似乎不是这样。
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假设所有符合条件的有 5 笔
$ V% B$ W% a% T9 V; F有时候回传 1 笔,有时回传 3 笔,是不固定的/ M2 h, ~# J( ~! r4 Q! {
回头查语法定义
0 D. z4 u; |7 b/ pwith . T* o! |- d, E" j6 ]
agentset with [reporter]$ e3 l# U1 r7 q1 n3 f/ l$ d
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 h$ D8 C. L它只说回传 agents satisfying the given condition
7 D) E% I% F6 H7 e; y! N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 ? 7 W& n; }4 [/ c: ~
4 Z. r1 m5 r* a4 ?
想确定一下
/ W: G3 H$ v+ i# W Z6 k+ _谢谢!
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