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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. K& ]" |6 p* F; ~) Z# \% X! C
其中有一段如下- p9 Z, j1 g! ~1 E4 x
ask turtles with [ infected? = true ]
: q9 }9 S3 D* C3 ^" X# V ?, S我原本以为这句会回传『所有』infected? = true 的 turtle
/ g! E; e9 {8 I0 k# @但看结果似乎不是这样。( U# Q# K$ F, M1 w! R! J- H0 _
1 C3 w9 G- n' B1 e+ N0 ]9 F假设所有符合条件的有 5 笔
2 S* V9 g8 o; R" |有时候回传 1 笔，有时回传 3 笔，是不固定的8 R: j. B5 R b7 E3 y
回头查语法定义
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agentset with [reporter]
, a# Y; g3 O% u% r; f( Z% ]& WTakes 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 z' e* Y$ B+ V, m
它只说回传 agents satisfying the given condition' u I. {0 @+ t& p7 v
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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1 p7 {/ q, I c/ J想确定一下: F# ~" O+ G6 |4 }! ?
谢谢！ M" I$ T# ^* n6 p
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楼主
发表于 2013-11-7 00:02:20
