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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
0 ^1 o+ c! V, Z, C. Z其中有一段如下0 r: b: j- i* Z1 B# O/ R" t2 |3 S; y
ask turtles with [ infected? = true ] # T/ W+ J7 K3 `
我原本以为这句会回传『所有』infected? = true 的 turtle4 a& F% M3 K' j( G4 T8 h% u6 n0 w
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
" o2 a& W3 U0 Y& G7 x# h' s有时候回传 1 笔,有时回传 3 笔,是不固定的4 W" s0 G% S! [3 B/ y1 p2 s: A
回头查语法定义
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& p1 S# Y: P2 f7 R9 bagentset with [reporter], |% H5 R! ]7 m3 v) O; ^
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.
! K0 g- x9 }9 a4 b; s7 J7 M它只说回传 agents satisfying the given condition
/ n8 a# m! i% e5 H( r( t5 Y9 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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想确定一下1 N5 S, J' U& }6 Q! ~
谢谢!* o* [6 U6 Z. d) M# K4 m6 ]" Y: ~
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