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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( ~/ S% T0 \5 o. D; j
其中有一段如下+ v7 B* T" `% O5 l. l1 n
ask turtles with [ infected? = true ]
L6 Z: X: f/ m5 X$ E' ^6 c {我原本以为这句会回传『所有』infected? = true 的 turtle i3 G3 [7 I( r4 U9 ]* {- \
但看结果似乎不是这样。 c; a4 b# C/ q8 V/ ~1 J
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假设所有符合条件的有 5 笔
5 c& v! c$ ]6 ?3 `0 n6 c8 e有时候回传 1 笔,有时回传 3 笔,是不固定的
6 Z! k7 s* a7 {& d& R+ Y9 T回头查语法定义$ U3 h2 _! |% p
with & S" v* s* r7 {& S1 w) \0 f* S
agentset with [reporter]0 V, B' A% L5 `- c' O+ p
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.
* r! ^( ?; c/ h! N. D它只说回传 agents satisfying the given condition5 G% Y- M) H3 X* L, a9 `
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 ? - c. `1 @: r" J& ?
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想确定一下. z. \! ~* S- |% Y
谢谢!
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