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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 O" `! L* W* k& `其中有一段如下# k9 W% u% g, b! U/ P$ u1 r3 ` }8 l2 E
ask turtles with [ infected? = true ] , K0 B } D. ]# H
我原本以为这句会回传『所有』infected? = true 的 turtle2 w$ g! {# I) @6 @; i) s
但看结果似乎不是这样。1 [: L( _# l, v" _ z/ W
/ Q3 b) `2 T: n: T- x; |假设所有符合条件的有 5 笔
3 G2 [* o. C+ S9 u+ D7 J, T有时候回传 1 笔,有时回传 3 笔,是不固定的
; v/ L2 Y1 K3 j3 ~回头查语法定义
W3 P2 n1 U+ T. ^" N2 ^* O" \$ y9 Rwith
2 K: a1 n5 C4 I4 [# r3 Zagentset with [reporter]
O0 N9 _6 e" P8 b: FTakes 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.2 `) y0 @$ R+ u# Q+ J) L0 u
它只说回传 agents satisfying the given condition+ I2 k3 l0 W% u1 d$ Q6 L! I1 o7 b; a
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 ?
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想确定一下
8 U( X. M, ]5 }" v; h谢谢!
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