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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4 l d- N' E% ?- k6 J- C6 F( l
其中有一段如下
' B/ c' [5 z. w ^0 |# o; zask turtles with [ infected? = true ]
) c1 w" d! h5 m" }. _我原本以为这句会回传『所有』infected? = true 的 turtle
0 O1 P% Z0 u2 E: K' m但看结果似乎不是这样。: V9 Q! F3 A6 s( X- @
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假设所有符合条件的有 5 笔( M; D- c: {+ o3 Y+ e$ b1 X; v' a7 z
有时候回传 1 笔,有时回传 3 笔,是不固定的
, f, l: ~( }$ J7 d回头查语法定义& Y1 a% m* ?+ W( q/ B. d3 [; s
with % |0 m0 }! j6 t! P
agentset with [reporter]
8 E/ s7 Z4 c ?" ?5 jTakes 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.
k9 i& x5 c+ \$ z+ i" c它只说回传 agents satisfying the given condition& w4 i! u" v3 C+ d( w
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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" b0 D; Q; ]6 c想确定一下" z# B3 [+ m* v9 ]* `/ a
谢谢!
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