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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
' Q1 W P# ^9 F5 m/ o其中有一段如下
1 f- T! W" d! d, @) m/ ?ask turtles with [ infected? = true ]
* }' n* n. P: U5 f% g! v我原本以为这句会回传『所有』infected? = true 的 turtle
$ c) }1 H0 c9 n, Q* }2 G; B; D/ L但看结果似乎不是这样。
3 {# d% a- N8 Z) B3 [# \) W8 \/ `2 J; ^ [- E& o
假设所有符合条件的有 5 笔
! R2 e+ j1 }1 k. s: P9 N. A# A" J有时候回传 1 笔,有时回传 3 笔,是不固定的
5 Z7 O) q4 S* E6 d% E+ y. r: g回头查语法定义* t/ a8 l7 `, w" @
with . a$ `& r3 T& E& n
agentset with [reporter]; O; c8 V9 k- ?9 }, D
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./ e$ o" g6 }$ W: u
它只说回传 agents satisfying the given condition+ Y: o' {; o& c$ `& ^
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 ? , x6 S3 k& W) l8 q/ `4 q/ `
1 p2 }1 c$ k7 T6 d' p1 p
想确定一下% b: j! h2 B+ \+ ?* H
谢谢!4 B/ @, k& l3 p- b$ m. z1 c
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