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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
8 b% c+ q) \, K+ i, Q @其中有一段如下; F% \% O# b) \$ p! f- s
ask turtles with [ infected? = true ] 9 R! {8 U7 @5 m9 D1 A7 G4 z% O2 R
我原本以为这句会回传『所有』infected? = true 的 turtle. m( h% A! O; C/ Y$ q) D. [% n
但看结果似乎不是这样。
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. p( U5 u% R# E8 c7 C/ C假设所有符合条件的有 5 笔
" n# F& c! M. W1 u, v/ U有时候回传 1 笔,有时回传 3 笔,是不固定的! Y6 b& u- m5 Y- g) P4 v
回头查语法定义1 ^. ?5 @: V( a& H8 O; Y
with
9 s) g; j/ Y& {6 @/ w2 ]4 qagentset with [reporter]" |; V4 K& j+ E2 k8 M4 ?& ~$ P9 r
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., J: u# Q) w0 V g8 V/ S7 t
它只说回传 agents satisfying the given condition& r1 D' i9 d+ H$ N; b+ f9 F! t
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 ? ! e8 ^6 E' Q% |$ z, m) t
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想确定一下7 z" L+ K9 h) |. s( v2 c1 J
谢谢!* V9 z {7 Q9 p; f
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