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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
" Q; V1 \1 B( h0 ~; |/ M其中有一段如下
$ ]' v0 s3 x/ u8 Vask turtles with [ infected? = true ] ! C+ ?7 V+ f% a# I2 ? ~. @
我原本以为这句会回传『所有』infected? = true 的 turtle
- T2 ~9 z( _9 k/ R: d2 [% p2 \. v8 g但看结果似乎不是这样。
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2 ~6 F! a7 A# c假设所有符合条件的有 5 笔
$ R/ c3 S$ _/ |有时候回传 1 笔,有时回传 3 笔,是不固定的# ~9 b2 ]8 X" v4 n+ Q9 q0 z: n( I
回头查语法定义
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agentset with [reporter]
. ^& S9 x1 N+ X I+ Q1 d- UTakes 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 n0 S& k! P+ z$ u: g它只说回传 agents satisfying the given condition
# ?* }/ |3 C5 X" f1 j$ Y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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想确定一下& w) ^8 N! f. r
谢谢!' O* L3 i6 z. r7 m% c' c
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