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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
{: _0 H% }" k3 _; J1 K其中有一段如下
8 C6 G3 K: e7 f% j) Xask turtles with [ infected? = true ] : h) q3 E, I) @4 I6 p) |1 _
我原本以为这句会回传『所有』infected? = true 的 turtle5 k% z+ n4 u: {" K d
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
. T- w# N$ ]! v6 [; F4 i5 m有时候回传 1 笔,有时回传 3 笔,是不固定的
- ~: V0 A! U# x s( \; J/ ?回头查语法定义7 V! y" M4 V; J2 W1 x( O
with
`4 v% ]- p9 f, R- ]agentset with [reporter]
! v1 J5 ` ^3 u% }2 z* a5 n- MTakes 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.# A/ Z! ^5 f3 Q X0 g3 s) b
它只说回传 agents satisfying the given condition
' G7 g) j" L( h5 h; s3 U6 @/ |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, u" {% J9 X* a! ^) D. H1 [
谢谢!
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