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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; J. }- q: f0 r; P# }+ n$ L9 I5 M( T
其中有一段如下& J" b: x0 \+ k1 o1 V. I( Y, Z
ask turtles with [ infected? = true ] 0 ]* K" T6 O3 w8 y0 t
我原本以为这句会回传『所有』infected? = true 的 turtle
9 W. \) @5 T8 w: A3 P1 I0 J但看结果似乎不是这样。0 P- X9 K O: O+ @- P+ y
" x1 n# s& q" [& ]$ {$ p假设所有符合条件的有 5 笔 w5 E: h- Y+ v- y8 `- U( i7 Q3 K, E; d
有时候回传 1 笔,有时回传 3 笔,是不固定的
" M5 {# H' F+ @" J6 d# |回头查语法定义/ ` J- N; R5 t
with / I2 _* p9 n R" \
agentset with [reporter]( P2 _( f9 ~4 H) P' l G
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.
5 o/ @; e7 Y! r6 {2 y7 y它只说回传 agents satisfying the given condition- G v) w# ^" j+ o& r5 G
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 ? % h: ?4 B* S) H( D, y/ e
- M5 U- S) S( K c' f想确定一下9 K* Z. {8 U: _9 V
谢谢!
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