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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
( ?2 x5 a5 f0 B5 R7 |8 G其中有一段如下- s L' E1 b) A" X
ask turtles with [ infected? = true ]
, q! |' k$ I, G2 C% P8 F6 i5 _6 v; G2 H我原本以为这句会回传『所有』infected? = true 的 turtle
2 r+ i1 \$ E& \. Y D" n但看结果似乎不是这样。
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& V4 O- w/ q, z6 Z1 w7 q假设所有符合条件的有 5 笔
3 p! ^5 x# h8 k$ }! g# r) z有时候回传 1 笔,有时回传 3 笔,是不固定的
$ ]* z; Y3 z; q5 u) }+ i回头查语法定义5 Q: W9 P1 x; l
with
; v" d1 k) K/ K4 dagentset with [reporter]
# r3 A% z$ `; T4 k; eTakes 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.6 ~" d" H* F; `+ U' m) r
它只说回传 agents satisfying the given condition
8 ]" s) ?9 t5 J* d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 ? 7 a; o6 S1 U9 c( l4 U
6 g% J! C& m7 P( d9 f% U6 F
想确定一下
6 ]0 y! O) c) _, j* H/ }- I谢谢!* v* q! t- D$ u4 ~: m7 D! A1 o
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