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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
" ]* o0 G$ V/ _# x其中有一段如下
# L/ ~7 l% \0 U/ Z$ O1 T Cask turtles with [ infected? = true ]
8 P+ }) W. _7 q& T- l. L' Q% L n我原本以为这句会回传『所有』infected? = true 的 turtle
' i. P; Q( N% ^# o1 W0 k0 t但看结果似乎不是这样。+ a4 h# |- e! @2 {" ?" }
# v6 H. C8 q' l' e3 F! C$ N假设所有符合条件的有 5 笔7 p5 |3 e0 y8 D) W) a% y
有时候回传 1 笔，有时回传 3 笔，是不固定的! c% r& t- w2 v$ _
回头查语法定义
g3 A5 ?# g" d1 q2 twith
, ?; N. L; N. r0 u7 p, ]* z/ Uagentset with [reporter]+ e. a6 j9 `) ]7 ]) K3 j: {
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.: ~; @! p9 |) e4 ]* e
它只说回传 agents satisfying the given condition* U; o( R$ _) B2 ]6 R5 A
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 ? 0 g" Z+ L6 h8 l1 ^
7 f! r# X3 a( x5 }2 ?
想确定一下3 [' k' ~3 y% ~7 |8 d
谢谢！+ h" z( p+ C: `4 D0 P \ ]' W! j
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楼主
发表于 2013-11-7 00:02:20
