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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
; C. x3 ~1 p2 y其中有一段如下+ O2 C6 L, g% Y$ E; `; [
ask turtles with [ infected? = true ] 8 X' o% X* l4 S8 R
我原本以为这句会回传『所有』infected? = true 的 turtle
( F5 @3 {* T2 Y& H3 L1 d, z) ]" P但看结果似乎不是这样。/ }3 |: d; z2 A: V3 g# c
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假设所有符合条件的有 5 笔
) \4 i3 M3 H0 o7 E* H有时候回传 1 笔,有时回传 3 笔,是不固定的9 }" ^8 v3 i1 r# `& F+ V: |; \
回头查语法定义
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' `) J0 ]( }/ r& x$ {8 \agentset with [reporter]# H+ k5 S" B" `7 ^
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.
/ ?( O& D+ P# m2 v0 v3 O它只说回传 agents satisfying the given condition
, L# \' |# ]0 t3 j+ ^. N4 w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, L! m2 O: r% J- z
谢谢!
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