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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) L$ b# ?" q' J" C% h
其中有一段如下) {0 [ {, F; n: `! x2 j
ask turtles with [ infected? = true ] 7 h1 g0 T5 Y' r4 ?0 y8 Z
我原本以为这句会回传『所有』infected? = true 的 turtle
9 z* U" w3 N$ `+ K3 o* J2 c# Q% C但看结果似乎不是这样。
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假设所有符合条件的有 5 笔$ @# l, E( u/ G: Y
有时候回传 1 笔,有时回传 3 笔,是不固定的
1 f( a9 U6 z$ d( y: Z回头查语法定义% L6 P4 {1 Q5 w5 l# Y) A
with
9 ]6 n& N- d4 s1 ] |4 Yagentset with [reporter]6 D' g0 v4 b/ ~/ t( ^" O
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.
9 O( ?/ j# `! p6 I+ R+ ?4 P它只说回传 agents satisfying the given condition! r; q7 V8 y( X9 U
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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; t" F! f3 l: b7 j9 L' L+ V+ D) ?想确定一下. g2 p5 X! m- V) ^
谢谢!" R( [4 E! }& z
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