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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
" F& ]9 F+ f& m' v, E3 U/ L5 W% A8 u其中有一段如下4 h5 z' ~ z, }& ? V
ask turtles with [ infected? = true ] 2 W8 `" z1 k0 Q, }- h
我原本以为这句会回传『所有』infected? = true 的 turtle1 P- g0 E& D: u2 b
但看结果似乎不是这样。9 P0 V& M# {! `5 ~& g
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假设所有符合条件的有 5 笔
' Y$ x+ S; n; h1 J" d/ R有时候回传 1 笔,有时回传 3 笔,是不固定的
$ ]2 G! g( O0 y4 i* X3 l; X回头查语法定义+ t/ E% _8 l+ {5 Y8 A$ l% l" ^
with
/ P/ C) n; O7 N( i" s* u+ }agentset with [reporter]
8 c0 H% N/ v" DTakes 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.
) E$ j( _4 g% q8 |. L @它只说回传 agents satisfying the given condition$ E" _. r# g9 ~. ~4 _
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 ? * G/ `* _9 o4 b# A4 W, i+ H5 `
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想确定一下) d+ {, i# s$ n1 X. |8 d4 i3 v
谢谢!
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