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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
* ]; G( |8 G0 _( S; _其中有一段如下& r) g$ s3 |/ u2 x9 { ~: {0 s v
ask turtles with [ infected? = true ]
+ Z2 m8 ~2 Q* k) w# n: H我原本以为这句会回传『所有』infected? = true 的 turtle9 D8 z n3 @7 _
但看结果似乎不是这样。
4 ^9 P4 i/ A6 W0 x
6 F2 C! t" V) k# x假设所有符合条件的有 5 笔
4 r: A! y4 u; R. M有时候回传 1 笔,有时回传 3 笔,是不固定的/ V% [/ _/ T* F" H) i$ [! ]
回头查语法定义
p; L9 F- f( y- Z1 }+ dwith 0 T: o a8 l. w7 U6 l
agentset with [reporter]
) q+ d- n7 I p. g% \8 zTakes 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.
' B$ F, }1 [3 E它只说回传 agents satisfying the given condition
2 `6 G. [1 B9 t/ A) y- `* U8 y) P$ @9 R, 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 O0 q# k: K3 T想确定一下" n8 L( E* W' s4 o0 v- ?
谢谢!
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