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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
9 V' |' l0 ?6 f0 E, Y8 X其中有一段如下
1 E" ~8 Q! F8 u0 E+ W8 d2 hask turtles with [ infected? = true ] 4 O' v7 Q6 x- A) w) i3 c+ h
我原本以为这句会回传『所有』infected? = true 的 turtle
5 [ h8 @" k" v) p! M但看结果似乎不是这样。9 J# h& A( _! V9 w1 E1 ~6 m
6 m( o* @5 @7 }; ?假设所有符合条件的有 5 笔
K3 V- {# n' q' V/ }* X( I有时候回传 1 笔,有时回传 3 笔,是不固定的6 O- J) t- x0 a+ Z( {, D) }
回头查语法定义( t5 V5 k7 ^! ?. L/ _
with 0 E) G" w, F8 ]" N$ O* A0 b, l
agentset with [reporter]8 u( ]2 Y5 b3 |
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.
6 Z) L; }8 h# q3 T9 j- [它只说回传 agents satisfying the given condition1 R. [) v- ~. P: B4 t. D* U
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 ?
T" X2 N5 A1 u! k; P" o4 _* x) u' j* Z+ M7 o8 Q
想确定一下/ l& H3 i- ?! V8 v
谢谢!0 D) ]9 K4 G1 r6 x
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