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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& P( j: G2 F- W
其中有一段如下( d3 u! x) ^2 H7 ~' c. j
ask turtles with [ infected? = true ] 3 g0 O, I. @/ D. d5 }
我原本以为这句会回传『所有』infected? = true 的 turtle$ k# O& Q8 P5 x4 o
但看结果似乎不是这样。7 L7 R2 e; p8 `3 w' e: N
: ?3 B/ J, \5 d7 _- `- E% S- U+ K假设所有符合条件的有 5 笔5 M8 }( G& C' K. J. a7 p
有时候回传 1 笔,有时回传 3 笔,是不固定的
( H) M+ N( x% S/ B& _回头查语法定义 Z6 x/ c/ k7 e" V
with
1 N6 l* G2 X7 D! v) `$ V2 h) Lagentset with [reporter]
9 m, Q7 d" V( s$ B3 XTakes 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.
+ g2 @" b* e/ ~( t) {它只说回传 agents satisfying the given condition7 G" @+ ]; v1 ]
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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; R" W! H U4 e, i8 { { B( Y想确定一下. q8 T% |7 C2 @) Y7 {3 B ?
谢谢!
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