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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 W- [8 D: m8 ]( l( @2 s
其中有一段如下
8 s% f' s5 z' B( P: [ask turtles with [ infected? = true ] 8 @* h- f9 L2 m( q8 L+ `6 G- d
我原本以为这句会回传『所有』infected? = true 的 turtle( Q2 i( W: i L: k5 L, ]
但看结果似乎不是这样。; T+ L& u2 }5 S ~; C# \' F' ^3 E
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假设所有符合条件的有 5 笔
+ W2 O" L* Q2 @. D( R& j+ _有时候回传 1 笔,有时回传 3 笔,是不固定的
; _# _* t7 l: Y1 [回头查语法定义3 L. A' X. H1 S( \+ m1 Z
with
$ R$ j0 D2 Y+ a sagentset with [reporter]
1 |. }" [8 e) L( d* k) t/ g+ iTakes 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.& ^: ^$ f! @: w* {( |( m* @) |- L
它只说回传 agents satisfying the given condition8 L" T7 d9 Z Q# b' J4 @
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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: A2 ~1 w/ h. ]9 M& h3 c想确定一下
$ c+ U# x3 d' {& _. ~% \: e/ E谢谢!
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