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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
5 U' i/ ^3 M$ q1 W9 ^其中有一段如下
, z8 b7 E% v- E0 O. g& m5 x& hask turtles with [ infected? = true ]
8 \* g" B* G- k) S我原本以为这句会回传『所有』infected? = true 的 turtle9 ^4 @# s. T4 S& W; ^ K% g% C% Y& U
但看结果似乎不是这样。
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2 c6 B( [$ ]3 u4 u9 K# y* e, q5 Z假设所有符合条件的有 5 笔
, a: A1 K6 f3 J) j% Q0 m! L5 d3 T有时候回传 1 笔,有时回传 3 笔,是不固定的! k' e' Z3 ^- b! C" d7 P
回头查语法定义 R ^' C4 v! t! F; y' m7 W$ e
with
( n7 `8 s2 w2 w, C- G/ jagentset with [reporter]$ ?) @( s/ E; \9 D5 i
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.
* s! j6 U: Q; B/ i, `8 C3 v它只说回传 agents satisfying the given condition
( p3 x7 s7 ]+ f/ \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 ?
8 K5 w$ h; N! d8 j4 E% s9 C1 g8 C7 V) ?: |) g5 W: Z' Z C* \
想确定一下
. U% G. h6 G" t2 `7 |谢谢!
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