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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
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ask turtles with [ infected? = true ]
3 U z: K2 w! O) c/ K我原本以为这句会回传『所有』infected? = true 的 turtle, g O: E% g3 b; y" z; X( @
但看结果似乎不是这样。
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2 B9 X$ t X. P8 h; I假设所有符合条件的有 5 笔
; l; S l0 P1 I有时候回传 1 笔,有时回传 3 笔,是不固定的% \ H' I4 R* m: s
回头查语法定义3 o6 m3 E: r( M: @# w# }
with
6 O% n- f0 Q1 H9 s8 ]! \7 S( @& |agentset with [reporter]
1 a. @( |% h# ^" I8 d+ ITakes 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.& H6 ~& G( j. k- |& i7 x
它只说回传 agents satisfying the given condition
6 p$ c2 o+ c" X3 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 ? 7 i- f8 w; ?4 w/ W; U4 H" Z9 a
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想确定一下
! Y, A6 e2 a5 o3 X- v8 i* b谢谢!
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