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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
1 }2 V6 h/ R5 G; L3 d% U6 [其中有一段如下$ Y) u! @0 O' Y
ask turtles with [ infected? = true ] % M7 o( `/ H: d$ x& M; P
我原本以为这句会回传『所有』infected? = true 的 turtle
$ ]8 W, ?1 F! W3 P; t2 p7 p/ O但看结果似乎不是这样。. A5 V$ q6 j, d) L$ B
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假设所有符合条件的有 5 笔6 a, U3 ^6 v7 ?1 k9 `
有时候回传 1 笔,有时回传 3 笔,是不固定的
+ L4 o0 N0 b6 d8 I+ I3 `回头查语法定义
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agentset with [reporter]
1 d: D( h; d- X; R5 e0 U& `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." {2 Q2 h6 ^1 ?2 o9 C5 x, {
它只说回传 agents satisfying the given condition+ k/ J5 S' |9 a+ b
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" f a& C1 A7 L
谢谢!' ?# Q% f" |( U5 l. K8 P/ ?4 p
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