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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
3 Q5 ^( s$ T) s9 v其中有一段如下4 h: X' ~5 k b A
ask turtles with [ infected? = true ] E C5 b s! V" |4 B
我原本以为这句会回传『所有』infected? = true 的 turtle4 ]. r9 V+ r* d
但看结果似乎不是这样。
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( g2 ]( z4 m5 W2 P假设所有符合条件的有 5 笔5 Y! i5 z5 k2 V% w! q
有时候回传 1 笔,有时回传 3 笔,是不固定的
( `0 F' [6 A8 @# T回头查语法定义
% ?; N3 [3 r) E" B2 }: f% T" }with
0 u2 ]5 ^, Z. H. bagentset with [reporter]+ F2 b# p8 r) w% Q4 H# ?
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.
8 |# g* b: }+ L7 V; w它只说回传 agents satisfying the given condition0 |! _8 ], _3 K6 m) G5 i# ^
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 ? ! u2 W. h3 t+ E \. b( M/ K
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想确定一下
% a# D6 l# N6 _( b) u谢谢!$ w/ P: {; |9 |" V/ {3 x( _
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