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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
! b. n$ ~! @; h6 G' g. H7 f: F) m' f" j其中有一段如下. P' y; F. t% V5 ~: f$ [* t: _
ask turtles with [ infected? = true ]
. N3 C2 |( O9 ?4 Y; u. I我原本以为这句会回传『所有』infected? = true 的 turtle
, t; a% N) }) [" p& l& {+ Y但看结果似乎不是这样。1 }4 o3 J0 A. B4 v
- x6 n5 c8 x8 g( j假设所有符合条件的有 5 笔
2 A& W; o* ]0 M: n6 _& e6 Q有时候回传 1 笔,有时回传 3 笔,是不固定的
3 Y, ~! P) ~; D7 _; A* [6 E回头查语法定义
6 E6 O: j- e3 z( D/ ^% Zwith ; h" S& q1 ~$ {6 C
agentset with [reporter]" ^" f4 c3 K: f0 B# }' 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.7 C* B: G) z2 K
它只说回传 agents satisfying the given condition
6 z3 L/ k' }2 ^ |9 t, \/ W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 ? ) j: q; x' ?+ ]
. w' l. a* o& v3 J想确定一下
7 i, ?; w, z8 f谢谢!' k$ v1 n- v* B) ~! @
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