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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 V2 N G7 a( B2 ^' d
其中有一段如下+ H! b0 r) E5 j% m
ask turtles with [ infected? = true ]
1 X, ~* E, W+ ~4 r: m: |( f我原本以为这句会回传『所有』infected? = true 的 turtle
4 u. y; y( m+ y5 a+ |9 n, T但看结果似乎不是这样。3 v# _% F3 }; R" a
# L1 _: \! o! M假设所有符合条件的有 5 笔 M5 N* K- H2 W% U. v4 Z1 x( z
有时候回传 1 笔,有时回传 3 笔,是不固定的( s/ i; X+ A" b# o, _4 O0 M. i
回头查语法定义
+ }: y o/ \% Z% p/ w# {with 8 r6 \9 u! w3 u
agentset with [reporter]. ~5 V9 H3 v( y
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./ d' x# h% B% S" k+ K
它只说回传 agents satisfying the given condition5 S- a0 [: E/ o5 g$ f
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 ? $ i# e! y1 p |
; f9 I i2 m) h3 q7 }" G( D7 C想确定一下% V' S# E# a+ x2 k2 f
谢谢!. K9 @ O: c/ U. C% \% j, U7 s
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