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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9 N7 C& w1 [! [$ S
其中有一段如下: v# Y& v8 R( V7 F
ask turtles with [ infected? = true ] ( l/ O. b4 p9 ]7 d' k W9 e' o
我原本以为这句会回传『所有』infected? = true 的 turtle3 y/ G) X( m$ a% Z% K
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$ m3 Y( J2 T7 A/ p3 J
有时候回传 1 笔,有时回传 3 笔,是不固定的2 x, S# ?$ q' {* P0 g. u& z( A
回头查语法定义+ k) }) w' ~% {9 |
with . g' ~# m. ?7 F. k/ C! s0 d
agentset with [reporter] O: m. e0 l; f! \
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., |/ [1 L, P) k8 \; }- K# _
它只说回传 agents satisfying the given condition
4 N4 b- X, {+ v4 J& `3 W0 T; f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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8 K a2 Y) o- G8 ?4 c9 t想确定一下
( `. X: A# x; x3 c& Z8 [, d) `" o谢谢!8 ^9 ~9 F6 T& O* }2 j( I& _
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