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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+ z: P) B/ p其中有一段如下2 A* f: S$ b! ~ f$ J
ask turtles with [ infected? = true ] 1 e4 p- b4 N$ }$ d5 }
我原本以为这句会回传『所有』infected? = true 的 turtle5 i" ^, @) U& ?+ `4 F
但看结果似乎不是这样。4 k( h& |: b6 Z. c
9 f2 y2 {8 ~ g8 w
假设所有符合条件的有 5 笔
0 M6 N$ v3 d1 J1 I) L9 J0 O有时候回传 1 笔,有时回传 3 笔,是不固定的) e! x* x4 x9 a4 C- m
回头查语法定义
, z0 A3 J) a0 G9 K5 R& Ewith
; m$ L6 ?- s0 ]9 [1 H, I7 o* oagentset with [reporter]: | ^* M6 G+ J5 t7 ~
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.& e# v/ e, I% j8 ~/ h' I& ?# y
它只说回传 agents satisfying the given condition
: k* l* ^6 \2 _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 ?
% T1 i5 t; x* U d: C5 o9 @ y4 @# S7 I' g. u
想确定一下5 H1 J4 c1 a2 J
谢谢!9 k, Z+ a: ?1 L' d/ q/ {: E/ H
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