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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8 A6 o. N ~$ y7 f3 `5 R
其中有一段如下# B' Y! d& B' u* S6 H
ask turtles with [ infected? = true ]
5 m# o& W Z$ _( {( T9 _8 `我原本以为这句会回传『所有』infected? = true 的 turtle
s* e+ P i1 W' D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
; s4 o& q' _& g4 ^5 c' w3 P有时候回传 1 笔,有时回传 3 笔,是不固定的
3 d, k( D7 Q: a5 C& k$ r回头查语法定义3 a$ }, V: X& U0 j z2 M
with
7 t7 v) ~7 Y% l6 _$ H, Fagentset with [reporter]
, B: }) w2 X# M( r) uTakes 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.1 w6 _6 K8 A, q& n* _# M
它只说回传 agents satisfying the given condition2 h, L4 D" l0 y- [0 P* I7 w! x7 H" Z; K
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 ? + a1 u$ a; B8 n1 s9 b+ b G
' i3 @3 L- Y" i$ d$ p8 ~想确定一下" q9 ]" a9 ^0 }4 U. w
谢谢!
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