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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% g, f; l5 l* f" ]' B
其中有一段如下
9 ?' F) t3 D, m# d! zask turtles with [ infected? = true ]
- ~) }7 }' h! {- b我原本以为这句会回传『所有』infected? = true 的 turtle
! j6 ~' w: k) l- Y3 F但看结果似乎不是这样。+ _( P$ z3 Q5 b q& ~
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假设所有符合条件的有 5 笔
- X9 l/ {* ~3 B* V7 M有时候回传 1 笔,有时回传 3 笔,是不固定的
. U; _$ d5 a9 J2 ?; Z+ p) t回头查语法定义
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agentset with [reporter]) t# z- d- h' a3 N& h( k% A
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.
; {5 X7 S# j' S它只说回传 agents satisfying the given condition! ?0 |. q$ N0 Y1 Q& l& a E( h
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 D- e. M5 b" J* j
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想确定一下6 o7 v: x. P7 Z" S" b6 S
谢谢!
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