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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
: i" e; B, P4 M其中有一段如下% S" j" r) [# K: i6 A$ _
ask turtles with [ infected? = true ]
9 w5 H# x4 H2 `) ?我原本以为这句会回传『所有』infected? = true 的 turtle/ c4 s, B( F8 \- g0 ~1 P- \
但看结果似乎不是这样。
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假设所有符合条件的有 5 笔
1 |, p8 @( I+ k/ M" E6 N( l有时候回传 1 笔,有时回传 3 笔,是不固定的
2 A4 n3 F2 d9 }回头查语法定义, T% a- Y, g! W% p: }
with - \, B5 l- X# t5 {% ^/ n
agentset with [reporter]
5 Q4 p% M. l2 D i( R& _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" H3 f9 p7 O0 ^: {$ s
它只说回传 agents satisfying the given condition. A- i: c$ }! R: i
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 ? 6 H! S' J& z7 J9 z Q
2 ?% E6 Q8 \! k- m* ?: ?
想确定一下" H- H# d F% w# x* C# A9 T
谢谢!
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