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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
: w+ G2 h V8 `) t, s$ ]其中有一段如下( t% f; `% P2 C9 i1 i
ask turtles with [ infected? = true ]
0 F: V" u( G5 {% |我原本以为这句会回传『所有』infected? = true 的 turtle
, {0 F2 g K M8 `+ J+ w- Q但看结果似乎不是这样。
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/ ^4 O2 ~0 e) ^/ h* e假设所有符合条件的有 5 笔5 {7 H: F! ^, q
有时候回传 1 笔,有时回传 3 笔,是不固定的9 t8 G2 s" S4 `+ `6 M, J0 l7 s! s
回头查语法定义0 l- E; J7 G4 o) w
with ; R: h. ^* A( D
agentset with [reporter]
6 I7 C' M& o$ ?# e- A( \) y, Z- fTakes 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.5 T, Q$ O z9 X: t+ x
它只说回传 agents satisfying the given condition/ ?2 Z1 T: C) H' i0 v9 P
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 w" F9 ` Q1 q; y1 G
1 m6 X! t& ?* n# Q( F想确定一下. S( u' k3 m9 R, w' y# K
谢谢!
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