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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
F0 ^6 x- p w) P" w0 ?1 P其中有一段如下: b# \* Y9 Y% H
ask turtles with [ infected? = true ]
* o, K$ f3 S, O$ }, _5 X& C$ \我原本以为这句会回传『所有』infected? = true 的 turtle
% H- m8 r% z, A( {" q2 G/ ~9 t但看结果似乎不是这样。
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' A# T1 f$ d# F4 W/ O& v; W假设所有符合条件的有 5 笔. B1 d5 `) {8 {( C% b) O
有时候回传 1 笔,有时回传 3 笔,是不固定的
) M! Z3 J2 ?7 |7 P回头查语法定义
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1 V$ J, P( Y' fagentset with [reporter]
5 K8 I3 k6 N: O3 m6 U$ R# C0 N3 }' OTakes 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.
- n6 f5 x9 O' `+ \. y它只说回传 agents satisfying the given condition
. P$ s j5 u$ ~4 Z# M) o) ], 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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5 O) |- _7 Z4 M% R想确定一下) |& X! a+ c2 Y! h* J/ ?. A
谢谢!
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