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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
6 x O( P. M' ]* i其中有一段如下
- ~8 h# w3 d5 {/ cask turtles with [ infected? = true ]
9 e& D8 Z% _6 E* j: e! O我原本以为这句会回传『所有』infected? = true 的 turtle
! K2 [+ g; G. i" ?但看结果似乎不是这样。4 e, e# f |7 O8 F% V( R L
. ~" K/ t* W$ U/ y6 D, `% G6 }假设所有符合条件的有 5 笔
8 S( k- s% r. d9 B2 b% D有时候回传 1 笔,有时回传 3 笔,是不固定的
5 s8 J$ j8 M3 `* q+ g \0 }回头查语法定义2 |' q1 k# @9 L. w1 t2 D; R
with
5 {, H9 v+ ]& M& Kagentset with [reporter]
( ?+ n5 A2 s7 [1 p4 u, B9 V! wTakes 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.9 l. K& T$ J' Y9 ]" l8 ^$ M- N
它只说回传 agents satisfying the given condition
3 T& n4 f1 {2 {: r3 |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 R. e, C& p1 v( z- _% a5 m
* A; X* ]9 e7 K- d想确定一下# M# i# F! |; ^& k G: B
谢谢!
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