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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6 W3 F* y/ E% ?) T: T5 _# M: C* z
其中有一段如下
& \ b/ }! g4 |: a3 Lask turtles with [ infected? = true ]
; w/ z5 W: d" i1 ]# z1 y1 W我原本以为这句会回传『所有』infected? = true 的 turtle3 x; Y1 U3 O9 ~
但看结果似乎不是这样。
1 K3 ?7 E$ Z [ c9 F7 b3 [: ]
% x6 s* J1 e, [# E8 B假设所有符合条件的有 5 笔
3 u. C3 T/ V$ i" [0 L; Y* g1 Y% e4 C有时候回传 1 笔,有时回传 3 笔,是不固定的, H7 w B9 Q- p1 g8 y
回头查语法定义& f4 F( C5 J; e4 b) j$ c$ {$ @
with " w, d8 X+ s2 X$ n& A
agentset with [reporter]
) T* S9 f _: a1 O; @! K+ [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.
1 R, R; J# n- Z& _0 O4 @0 b它只说回传 agents satisfying the given condition
8 N; |! n1 ?$ v2 X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 ? 4 C( W' P A- H5 Z" n: W& B
8 g' E- e7 r8 a, C* ?$ I4 O
想确定一下
1 X. D5 R' \/ h1 U6 u% w; }$ U4 c谢谢!) l$ f) K7 {, y1 O" e1 Z+ q
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