|
|
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# o0 C5 c$ A4 U7 K6 v# p
其中有一段如下! G2 K; D9 h( j1 r9 s9 p* [3 ~# Z
ask turtles with [ infected? = true ]
. q L9 O9 P( ~5 v6 m4 V1 g我原本以为这句会回传『所有』infected? = true 的 turtle( f0 J$ c" U3 `/ t
但看结果似乎不是这样。' t) o8 ~' K' ^) m
! \/ h1 k* `3 i0 f8 \
假设所有符合条件的有 5 笔4 U3 m8 ^% r" h
有时候回传 1 笔,有时回传 3 笔,是不固定的
$ K" y' R+ Z2 V! c回头查语法定义 {( |" q% D \& A/ q
with + R7 s) A5 L# s" q7 ]! M4 w
agentset with [reporter]+ B* \7 ?# E6 H* ]; m
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.0 d7 U3 U* i5 K6 S- i! q5 i
它只说回传 agents satisfying the given condition
`0 u+ r1 h t. `; {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 ?
8 u, J3 p+ ?& ?1 l' _ |# |7 d
% I6 `5 j5 }: j) C# r) F想确定一下/ ~' P& w4 F. K+ N% L
谢谢!8 O0 T+ m; u! N- ?* j/ }1 l# j
|
|