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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
( v$ w; D; b. {, T: x' X: z其中有一段如下
9 r/ R+ P% t. ]0 a" C5 ?+ aask turtles with [ infected? = true ]
, {& D' K" ^! e" h我原本以为这句会回传『所有』infected? = true 的 turtle
2 D$ \6 F" g( K; v( e但看结果似乎不是这样。- G( v' M9 M/ W* O* p/ ?3 ^; b& X
8 j# W9 _! {) }
假设所有符合条件的有 5 笔
3 r2 J q5 x7 N( B4 v* X' R: V有时候回传 1 笔，有时回传 3 笔，是不固定的4 }1 k* A( U9 D5 x
回头查语法定义4 @& ?9 a! j! G* g& l$ g
with 1 f) F' `$ }0 y& ?) Q# e; V
agentset with [reporter]% e9 I# e. 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.
3 u) B2 f+ S" S% a它只说回传 agents satisfying the given condition
5 {3 T# f0 |7 I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 ? * M% l; Z/ R$ j& @8 u/ G3 \) P; y$ U
: Y' j$ S8 f" _6 C I, [* y想确定一下7 V& i3 M& d" ` ?% h$ h; X
谢谢！3 F" X7 f* E: v# _+ u# R( S0 v, \
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楼主
发表于 2013-11-7 00:02:20
