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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
+ |; G0 f9 v: o F$ J5 t- A其中有一段如下8 ]; y5 }& P# V( {( P, x) ]6 c
ask turtles with [ infected? = true ] # {) {4 x- Z3 e4 d
我原本以为这句会回传『所有』infected? = true 的 turtle1 m: \$ |7 |! _8 K+ {5 e' Z1 M
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
8 S" Q( W2 A7 Z9 s8 ^* F+ m有时候回传 1 笔，有时回传 3 笔，是不固定的, C; X( Z* X- c6 T! b
回头查语法定义
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/ Y. B" ~3 h3 G2 R1 C2 uagentset with [reporter]) j) {2 G S- g# r$ 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." j5 p& X9 Q G& e& n' W9 ?+ @
它只说回传 agents satisfying the given condition
5 m* u/ U* D. E3 m4 z) X3 ]0 e5 |, D4 b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 ? # c2 L+ o. a8 b) r' q Z
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想确定一下
; o/ c6 _# I8 h谢谢！
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楼主
发表于 2013-11-7 00:02:20
