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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
: I, U% A/ }: o$ t. E& Y9 V1 ?5 |2 u$ _3 e其中有一段如下8 T) O# }% c$ s. _1 |
ask turtles with [ infected? = true ]
+ Y6 ]4 k0 Y7 X我原本以为这句会回传『所有』infected? = true 的 turtle6 s7 K: P9 R7 l( {& Q
但看结果似乎不是这样。/ ]' h) e! c4 i% I7 L) m
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假设所有符合条件的有 5 笔6 w, }. v! d( M# O! B
有时候回传 1 笔,有时回传 3 笔,是不固定的+ G9 X9 i4 r% @1 @
回头查语法定义- ^& N/ J9 t M4 q' T& }) d! D
with - ]$ {/ s/ S' u/ C6 v6 x/ E
agentset with [reporter]
3 ^" L* Z4 P+ a# P' zTakes 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.7 b: U' M/ t& E! ~6 f, x* P! v H
它只说回传 agents satisfying the given condition
) z1 z. j: p. k* e! N4 S% R* Y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 ? , j( F1 I$ T7 I. B- N
& u! E, M9 N$ e想确定一下8 Z- D( e( h* v" X7 T6 |! {
谢谢!
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