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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2 P: {: K% O0 ~6 G. S+ x
其中有一段如下2 ^3 c0 O( Z0 M0 S/ S J# {
ask turtles with [ infected? = true ]
' x. t0 D8 _# s2 N6 D/ Q* d3 U我原本以为这句会回传『所有』infected? = true 的 turtle
3 w! k) _3 S& s7 ~0 D/ ]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6 s# q% s: w! C1 s
有时候回传 1 笔,有时回传 3 笔,是不固定的
0 W0 E" e5 Y1 _* e回头查语法定义/ Q. f) i; Q+ e7 r9 v9 R
with
6 w) A6 [& d* E( @) Iagentset with [reporter]
4 m% @, V K5 t* W" tTakes 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.
4 {; L8 V/ e1 B- A( F% |它只说回传 agents satisfying the given condition( w. l0 }! c- y- \8 E$ A' m
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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- t8 ]3 U, N; C6 Y想确定一下. L: i5 R$ B& |' I6 I% ^) f
谢谢!: P; J9 i, A1 K- Z8 v
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