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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
8 n+ |/ w' P1 r其中有一段如下$ v* R# G6 ]$ Q
ask turtles with [ infected? = true ] ' c& D4 k0 j _( p! |5 |
我原本以为这句会回传『所有』infected? = true 的 turtle8 J" r- O0 C& l7 c ~' g& }' g
但看结果似乎不是这样。
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' ?7 Z, Q% g/ N& J! }, K0 I假设所有符合条件的有 5 笔
9 _9 ^7 l5 |7 Y3 O有时候回传 1 笔,有时回传 3 笔,是不固定的
/ j8 P9 Y3 e- D. I s7 I8 h回头查语法定义/ P+ u6 b7 P* E8 q, d
with * w) f4 D# {5 l2 V8 [
agentset with [reporter]
7 s, {& K7 a& {: \. T3 ?$ _% dTakes 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.
. P+ s: V) a6 ^0 Q9 g; E+ ]; J它只说回传 agents satisfying the given condition
1 s& j+ {6 B& ~0 S8 ~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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想确定一下
2 a& a h' g0 V/ a$ R9 W2 U谢谢!
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