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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
% D! L0 L8 e* X5 A4 a其中有一段如下
2 K1 ^0 Y) J" t' ^* m8 [ |- qask turtles with [ infected? = true ] - N. C9 p8 T- v$ ]* v3 Y) X$ ~: [
我原本以为这句会回传『所有』infected? = true 的 turtle
7 c" a- B' S- D但看结果似乎不是这样。
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假设所有符合条件的有 5 笔
( W0 ^+ o9 E& ?+ r# l有时候回传 1 笔,有时回传 3 笔,是不固定的! D5 r3 ?- v: g
回头查语法定义
! O# W, \! z! R1 Mwith
6 J4 B) ^7 N+ f) G, Q( a( |agentset with [reporter]' R6 D( z: N* ?. C, L1 \% q' t/ T
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.
/ D- O2 E" H6 e. Z0 Z$ K它只说回传 agents satisfying the given condition# W/ k4 Y3 a9 n$ 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 ?
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0 Q3 Y9 Q3 Y3 ?6 S* j( C% A3 f6 w0 I想确定一下+ f( z8 a% `( ?9 V E
谢谢!/ X4 q3 E0 [) R* R
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