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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
8 u9 y$ V9 G' I) a$ B/ k其中有一段如下 r; s) c0 ]. e# p
ask turtles with [ infected? = true ]
) e5 o6 o X1 q# ~% Z我原本以为这句会回传『所有』infected? = true 的 turtle
9 S+ M& Z3 b2 |* g2 W7 i但看结果似乎不是这样。, `4 N6 `# V6 p
. r+ y# b& R# `( j假设所有符合条件的有 5 笔, V5 ?" D6 P3 O& M: q) O
有时候回传 1 笔,有时回传 3 笔,是不固定的$ S. h8 v ~" l) f6 K
回头查语法定义" A4 v# }) E( E% h
with 3 ?: S/ W) t. z0 R- l9 K3 S7 v
agentset with [reporter]
- l8 p" d+ a5 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.
6 t2 F3 Z9 y V9 S8 [6 P它只说回传 agents satisfying the given condition m5 R( m" f/ o" z: t
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 ? . n% ]; G) J: ] E$ m
( y2 e- d8 T' }& Y. l8 } w想确定一下
/ l8 g! Q, `6 g. o! N# w0 V谢谢!
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