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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
, o4 [: Z" ~% s3 ^1 p) N其中有一段如下
9 I. l# G( n6 o* Y( M+ |ask turtles with [ infected? = true ] 1 p$ p+ p9 M7 J
我原本以为这句会回传『所有』infected? = true 的 turtle
) p( e& T8 f' H9 Y但看结果似乎不是这样。$ }* M( Q! \; ^; X4 B T- P0 Q
2 C" I, ?: Z* Y7 \
假设所有符合条件的有 5 笔3 j( ?/ D: K* }9 M0 ~; Y( \3 w
有时候回传 1 笔,有时回传 3 笔,是不固定的$ W! |2 p- \& R6 M% \# j: u6 s
回头查语法定义
]7 y. m; z2 g! h; g: J6 `8 ywith
: O: j7 c( V5 z$ ]agentset with [reporter]/ `, p! G$ l* l `4 g. L6 N
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.
# N" ^9 }7 a( }它只说回传 agents satisfying the given condition$ G! ?9 \. b) z
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 ? % \9 T, n! N* X% ^
, t+ f8 A) ?+ n7 {' ?0 s5 y想确定一下0 z2 ^1 a0 i! I! a+ `; Z
谢谢!$ K- } `9 d. n0 A0 P# q
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