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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
1 T3 K. h0 _8 r6 ]* p: k/ k8 ^其中有一段如下% p. Z! E: N- h
ask turtles with [ infected? = true ]
: z+ g5 d( `1 V* v. d: I6 W6 N我原本以为这句会回传『所有』infected? = true 的 turtle+ a% N. @/ ~( y' Y8 K
但看结果似乎不是这样。0 W' M2 d# W: P$ h5 `
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假设所有符合条件的有 5 笔- Y- ?/ w3 c7 i& L& n; i
有时候回传 1 笔,有时回传 3 笔,是不固定的
2 v3 e" y' \& [- M' q N回头查语法定义4 z% H- @: i- t; G
with , c+ ?. N( h) u2 \$ {6 |. D" J% Y! K
agentset with [reporter]: N6 F/ F6 h/ @; u% I2 \
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.* P. Z. Q$ l8 S) L
它只说回传 agents satisfying the given condition) l/ S- C7 ~% r) N# W- {
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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`# _/ l( o2 I; c0 u A想确定一下 `8 i* A- ]) ^ X1 c, u& l
谢谢!
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