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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
; @3 }. A" `6 A% U) E3 B其中有一段如下
9 F8 r9 M9 a5 r# _6 v. pask turtles with [ infected? = true ] - H( H4 e Q+ H9 \
我原本以为这句会回传『所有』infected? = true 的 turtle
, y* W9 J# j: C0 l; Z8 Z: G 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
8 p' R Q8 e0 o有时候回传 1 笔,有时回传 3 笔,是不固定的( \3 t- C! N5 f2 f$ p" Z
回头查语法定义
8 B3 D% x7 u, J. Pwith
7 ^+ H% h3 X; n! R3 Oagentset with [reporter]% w) n* I" w" i3 i4 W
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.
3 O" B0 U$ X, C6 y它只说回传 agents satisfying the given condition
& `$ X# @" d+ G ~6 ]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 ? + Z& \7 M9 {: m1 w2 j
* ]7 ~- s3 z" u, Z7 Z想确定一下" s+ M4 e8 F' q" ^6 D" ]
谢谢! ^3 Z9 R8 k! Z% V# U: b) D9 @
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