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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
/ @ ?6 n* }( M- T8 B' e. e其中有一段如下8 {/ V8 e& ^# A7 ~. c- n
ask turtles with [ infected? = true ] . Q# { E8 S3 E9 l, H
我原本以为这句会回传『所有』infected? = true 的 turtle/ ]* m) Z# N& l! s {* g/ B
但看结果似乎不是这样。! J1 r" ^3 C( y, o( O
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假设所有符合条件的有 5 笔
! B+ M4 r2 p' d4 ^& s1 q1 R2 {* i有时候回传 1 笔,有时回传 3 笔,是不固定的7 {. [" d# U W
回头查语法定义% W x% o6 g k2 r! ^
with 5 m4 z9 X5 c- P+ c4 T
agentset with [reporter]8 j$ n6 k( e" F O: \, Z ?! V
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.
' q. k2 Z( c- q7 t: A; B$ T它只说回传 agents satisfying the given condition
4 v: c6 c3 F+ Y$ q( J2 h8 m. C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 ? 1 c% C+ \7 M# K3 b- i
% |8 A5 f2 w+ C0 }" i$ V想确定一下
3 ?0 f W& y; t) h1 }* _- Y, H谢谢!; q" C! | `1 v# V1 I; D
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