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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 B7 t+ C5 v1 V3 B" ]2 f+ ?4 u
其中有一段如下
& ~/ F& @8 [) E0 Kask turtles with [ infected? = true ] ( i' k: a$ \# m- `/ |
我原本以为这句会回传『所有』infected? = true 的 turtle
5 H" f$ Z0 |( g$ c8 Z# l! m- @但看结果似乎不是这样。' r1 T; A/ A: p# Y
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假设所有符合条件的有 5 笔
2 X3 h/ K- i0 e" X( l# {- W+ f有时候回传 1 笔，有时回传 3 笔，是不固定的
, h% w* c$ n4 `1 W; P+ o& ]回头查语法定义$ n0 @2 B. w6 F/ K7 w
with
7 p# q' A( A0 L5 j' Tagentset with [reporter]
* l! A8 F' @* Y* |! HTakes 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.
. ^$ }, | T- f ^它只说回传 agents satisfying the given condition
( w1 N6 F: I9 D9 j# [3 ?/ u h9 z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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0 |# l9 Q A* j" M) a( z0 _想确定一下$ o: ?0 M6 s7 B6 g$ F
谢谢！+ w% c0 E3 y$ p$ h
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楼主
发表于 2013-11-7 00:02:20
