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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
& Y' u8 O- ]! A9 P其中有一段如下' r% _2 J, S4 v6 Z/ X$ w
ask turtles with [ infected? = true ]
w3 D) z H3 c我原本以为这句会回传『所有』infected? = true 的 turtle
. K' b% i" a6 Q; n但看结果似乎不是这样。$ z1 |+ S3 {9 }
+ u# B- ?, Z2 x q# K& W! N假设所有符合条件的有 5 笔0 U+ r% B) T1 w- u e6 _* ^
有时候回传 1 笔,有时回传 3 笔,是不固定的
7 U) e! z* U5 Y2 f; p回头查语法定义4 H! M: Y L+ Z, l
with
& _0 X$ [) U u, e9 \agentset with [reporter]. Q% | J2 P) D1 A; L. z( C
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.6 T5 {& o- e$ Y; N& z8 p# l8 a' A
它只说回传 agents satisfying the given condition/ a( b X: e# N
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 ?
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, R4 v7 a1 A, S, d想确定一下
) \. _; ]! q0 \' o/ G) H( ~谢谢!/ {: M5 P. o1 O) o" E
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