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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
1 ?- m5 [* L* r! n7 t8 i其中有一段如下
# F7 O( C8 w) j# ?0 P L! l1 o( ?ask turtles with [ infected? = true ] 4 F& W F3 r! [% c
我原本以为这句会回传『所有』infected? = true 的 turtle1 s4 R: A- |8 m
但看结果似乎不是这样。) p3 I/ j: J% y; p2 y0 s0 ~
& u! _7 _: a8 e4 b' Y4 J假设所有符合条件的有 5 笔
! I. ^" Z1 f2 N9 p: |7 Z0 z8 C有时候回传 1 笔,有时回传 3 笔,是不固定的3 L8 l$ o6 W/ b6 H3 f% R
回头查语法定义& U& x- W x; ?& t8 ?5 [! R) |2 ~
with
) T% X% m' M3 s( @. `0 ragentset with [reporter]* b; e0 y' m5 A; [ N4 K
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.+ @! f1 } ~* t5 U& X
它只说回传 agents satisfying the given condition2 B; \: Q- {. ?! O1 a- 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 ? 0 P+ [& U) `! Y5 A/ i2 O' p
+ @8 X6 g4 z6 G4 u0 @: O
想确定一下* j6 j6 d/ a3 `
谢谢!
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