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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; t, O3 R1 [2 S& k
其中有一段如下
! E$ W r' y1 p8 G+ R6 D5 gask turtles with [ infected? = true ] ! [+ w, P J" C# u0 |+ i
我原本以为这句会回传『所有』infected? = true 的 turtle
% W) q* W5 `( ]% r8 j7 K$ D但看结果似乎不是这样。9 ^8 K% E, G* D& @
1 `; b: K: z# v% h假设所有符合条件的有 5 笔
4 G; M7 W: W2 b* Q- u$ Q% s4 \; j有时候回传 1 笔,有时回传 3 笔,是不固定的. ?# e6 i$ E* C, H
回头查语法定义. U. \ U1 T; a! n; T! L
with
, o( \7 P8 U, n+ O8 |agentset with [reporter]
! x5 ~! f6 B3 C _, o, STakes 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.
* J0 D6 r& {) ]它只说回传 agents satisfying the given condition
8 ]1 E& j2 q, Y9 w5 M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 ? 3 R+ H3 L) p1 s. ~4 m4 }
4 [* v& r& n5 i) `! q* B8 N2 }7 h想确定一下# c: S# \- E# H- n8 H/ J+ j
谢谢!
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