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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, W- ?3 N6 T/ @5 X1 R, `
其中有一段如下
9 }, p0 P4 l' n* U( @. j9 M6 Yask turtles with [ infected? = true ]
7 P/ h" u/ c; s4 b" L4 W( y' c我原本以为这句会回传『所有』infected? = true 的 turtle! k: A D/ E) \; F4 }1 N$ A% b" I
但看结果似乎不是这样。! @6 F1 L1 O! G
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假设所有符合条件的有 5 笔' s @' j5 Q/ G! z
有时候回传 1 笔,有时回传 3 笔,是不固定的. x! W& O- o; |% l
回头查语法定义$ w o* e+ z- N. i1 l: o
with + t3 E) O9 G! R+ b; y6 |0 T
agentset with [reporter]+ K# o S3 h$ Y* p* {
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.# y0 }3 V' S3 J- E8 f, {( M6 H
它只说回传 agents satisfying the given condition* m, r1 w3 A. o7 n5 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 ? 1 t3 D' t. l3 c: j; b& U
$ L# W9 A( y5 B& d1 }/ M想确定一下3 N+ E4 I- I6 G+ a# S
谢谢!
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