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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
+ l2 k$ W4 x8 V3 V, |1 w其中有一段如下- R( A0 w; v" ^" i, q2 x0 o! G" j$ h
ask turtles with [ infected? = true ] + q& ]% E) Z9 F2 v5 g9 d. r
我原本以为这句会回传『所有』infected? = true 的 turtle" I5 B% \/ S. D9 b( r+ g
但看结果似乎不是这样。2 O9 a& y! P7 Y7 V! W5 e4 E$ e
1 c$ M% N5 ^& |5 u6 D5 ^假设所有符合条件的有 5 笔/ C# y; _: ]2 S- R, A' U, }
有时候回传 1 笔,有时回传 3 笔,是不固定的
* z3 t0 Y* u5 I' |/ w8 w' V0 ]) s回头查语法定义# @- a/ h# q# T0 L/ w- Z6 M& |& ]
with ( }3 {; U& ~( M6 h* B
agentset with [reporter]' G, w! K2 ?- {/ [& [
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.) A+ `5 z6 t" D& g8 g ~$ y
它只说回传 agents satisfying the given condition% c$ V0 S7 _% y0 e( U7 l. i% t
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 ? ( l F7 Q5 n! q6 u
( ^7 h2 i+ C4 y) {
想确定一下
( I7 ^9 Q' m% e3 p/ U4 V* g+ ^6 C: T谢谢!
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