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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
+ l7 ^+ Y2 X, h4 n, S f0 |其中有一段如下
5 T* e! v# a/ Z. y8 }ask turtles with [ infected? = true ] 9 M: W+ P$ a3 G4 \- k+ N6 e8 T
我原本以为这句会回传『所有』infected? = true 的 turtle, _: g ^( R6 f
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
" z: {% ~, R2 y% E3 P, r有时候回传 1 笔,有时回传 3 笔,是不固定的
' s2 i6 K, C# b6 {回头查语法定义; i$ l! T) O* i1 L, q! @1 t
with
/ S2 R9 r% ~6 m2 N) ?agentset with [reporter]+ Z6 }5 ]" C) m% 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.
" b1 D2 W5 ?: s, c& T; H& J它只说回传 agents satisfying the given condition5 O5 O7 A9 f. V# H$ ~' V4 `7 Z
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 ? 1 }7 w; c1 p: {1 [9 T! t3 I
0 H% A2 U1 N$ W3 W3 H/ l+ v想确定一下& E5 w& g4 ^- p& O1 c2 }+ a( B
谢谢!
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