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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
9 s5 l* R; {, r9 B. M其中有一段如下6 A7 @ ]* e0 _; U0 T
ask turtles with [ infected? = true ] ( p& Z5 l! M/ d1 f& V
我原本以为这句会回传『所有』infected? = true 的 turtle/ G8 I2 u& [5 i, p4 m' U
但看结果似乎不是这样。 X) l) t8 U/ o0 I* S
( ~6 t, `; n* P7 T$ C: e4 n" u' o假设所有符合条件的有 5 笔
% U z, M8 U; X6 l% b有时候回传 1 笔,有时回传 3 笔,是不固定的4 U& _7 N) K) \4 i
回头查语法定义4 J5 n4 G2 Y2 K& L
with
! ~! f+ W% B) M% d6 m0 p! sagentset with [reporter]/ u8 n$ ?, p0 e/ B8 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.
5 i. [6 r% C9 f" \) T* H0 P- g它只说回传 agents satisfying the given condition- V/ `8 S$ D! @! ~4 C$ S
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 ? 2 b' e+ c0 f/ _3 Y: _/ s
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想确定一下2 M3 o) J6 w) }% V3 }
谢谢!
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