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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( L/ ~4 n' [8 f$ g, f _; i
其中有一段如下8 P( Z5 q z0 m3 k6 T/ @+ `
ask turtles with [ infected? = true ]
" V7 D9 X! I5 T( s% Q我原本以为这句会回传『所有』infected? = true 的 turtle
$ }8 |" p" c7 Z0 w$ r但看结果似乎不是这样。7 j; X2 o' D0 A- V. Q/ a" j
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假设所有符合条件的有 5 笔* G& b1 y. S; P
有时候回传 1 笔，有时回传 3 笔，是不固定的 m: P2 ] z0 C6 m
回头查语法定义# Q5 @& m. s! H' B
with
5 k6 U$ Q9 q5 uagentset with [reporter]
& c4 w( M$ d2 lTakes 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.
+ a; c( n) R( Q# d它只说回传 agents satisfying the given condition& [2 W0 r5 B8 \
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 ? + \) g Q$ n6 M* A3 E7 D
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想确定一下* |1 d$ k9 I' t
谢谢！$ K4 f" \! \. }; G
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楼主
发表于 2013-11-7 00:02:20
