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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 }3 v: Z; o9 J4 @8 h其中有一段如下
" L: H' c( ?% T( S, h! |3 cask turtles with [ infected? = true ] 0 G9 k0 Y# a! L9 Z$ d; B
我原本以为这句会回传『所有』infected? = true 的 turtle
5 I( b- [0 h. r; e. {但看结果似乎不是这样。6 s* ?( c) ~0 Q8 F% q7 o- r& G, n
. L1 g1 _" r; B, `4 [假设所有符合条件的有 5 笔( ]& v! S- L6 T! T+ {
有时候回传 1 笔，有时回传 3 笔，是不固定的4 I" K; P( P+ n
回头查语法定义
. g8 i6 j0 G5 |0 [- J: l4 mwith . i5 Z8 K; ?; W$ Z4 F+ z3 h6 r
agentset with [reporter]7 M K8 w. o# A0 Y- B/ [9 i
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.
6 `0 d+ N, P+ n' L它只说回传 agents satisfying the given condition
& N9 I+ l7 T2 G/ o) \3 ?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 ?
: h% n$ h8 e( G* ?
- C7 X6 V v* G想确定一下, @) i. l$ Q; e. O! N
谢谢！- j8 X$ o7 e+ n9 A. o
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楼主
发表于 2013-11-7 00:02:20
