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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
7 G7 c0 j. A% c# V其中有一段如下: g; J P+ w' K
ask turtles with [ infected? = true ]
8 a; b3 e: z7 Q% C我原本以为这句会回传『所有』infected? = true 的 turtle
: ]) X' C$ W2 E) b( q& |0 G( T; ?但看结果似乎不是这样。8 m4 X B4 q9 [; _, G( b; ~1 K
7 M R/ ^ S) s4 k. y假设所有符合条件的有 5 笔- {& ?) N& x1 j! m
有时候回传 1 笔,有时回传 3 笔,是不固定的5 Q. t) ?. v& F3 D- W
回头查语法定义) X2 K; k) v$ E. U1 z! R+ B
with
l1 e4 {) b4 \6 v0 @) ?agentset with [reporter]8 L7 x9 `6 [& o) x
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. S- h% I3 o2 N# }0 l! [# {3 d
它只说回传 agents satisfying the given condition1 \ F# @7 P, Z( R5 _
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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+ @" o6 C* _$ W: \想确定一下1 A8 Z% a2 I) |" P) k+ B* {" V2 S
谢谢!
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