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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
6 @+ N$ p* ^) t" W& F+ i" [/ b其中有一段如下
* {3 Z- B) E/ t: X# ?+ lask turtles with [ infected? = true ]
, D) a/ V# U. v; U( |9 [我原本以为这句会回传『所有』infected? = true 的 turtle
# J+ }5 c" D4 U: b" _但看结果似乎不是这样。7 v0 J' F5 p/ e/ U$ O5 C! A1 I4 g% r! H
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假设所有符合条件的有 5 笔
6 M3 J- U/ q' U7 x Y有时候回传 1 笔,有时回传 3 笔,是不固定的/ @" n, C( _5 f0 f
回头查语法定义6 n% h5 D) G; T3 \ f
with
$ G( `8 Z' n9 Z; I Iagentset with [reporter]
% Q( B! q+ H. k8 d$ d5 qTakes 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." u$ A) s, k; c; ]
它只说回传 agents satisfying the given condition
) \6 T0 x/ }1 }+ Z+ V( C& s( o# J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 ?
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想确定一下" D6 {1 M# k+ P; [+ b6 {
谢谢!+ B9 u0 l3 _# v4 l
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