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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, s" ]' @" r- l8 @( B \6 l) a
其中有一段如下9 |+ G2 f/ H+ N d% C0 z* K
ask turtles with [ infected? = true ] 5 u" E+ J5 r- P5 S) Z, A" _
我原本以为这句会回传『所有』infected? = true 的 turtle
: n. n. h3 t3 `! q# m+ n& d$ c4 g; X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% o. k3 n8 X% g) C5 R* g( w
有时候回传 1 笔,有时回传 3 笔,是不固定的& G: @! C/ Z1 @5 A# h
回头查语法定义$ ~/ I: C% S& W' K% D- f# F0 [7 R
with h- t4 U' [ V: @
agentset with [reporter]
) R6 d/ j, G O. f3 e2 F( S' A O6 BTakes 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 ], X+ W9 m5 d/ c& w; K' J8 A它只说回传 agents satisfying the given condition$ s0 L9 Q$ p$ _1 a3 @6 v$ E# B
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 ? ! ?4 E P% P. z) n% c, B* z* y
3 n% t- d" e2 u5 C1 U6 }想确定一下0 `) L& T) x' p. m' f8 R6 |) J
谢谢!0 d- h4 W1 B' H$ ~+ L
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