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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
! W+ N) y0 P3 q, @& S1 z; j其中有一段如下
f$ W1 R' d4 k, T8 Vask turtles with [ infected? = true ] 7 A+ x+ z$ g( @
我原本以为这句会回传『所有』infected? = true 的 turtle; o/ v5 H8 I3 G- Y3 G. Z: L" X
但看结果似乎不是这样。
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+ x$ ~7 K$ I* x1 \2 o假设所有符合条件的有 5 笔/ N: Q- x$ Z0 ^1 {; G! w# e
有时候回传 1 笔,有时回传 3 笔,是不固定的
$ W+ l% u$ e3 H" h5 O回头查语法定义. @3 a! t3 u' W: ?% ?; `* k, a1 o
with 3 ~1 q; S5 R) L5 l% S" V
agentset with [reporter]8 Y" F' e$ P3 y4 K9 P5 ]5 b
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.
t' a) {2 |, m* |# f9 q它只说回传 agents satisfying the given condition
s" s( X; A8 ^) a2 k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 ?
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想确定一下 r& W) J; x/ o1 o/ t2 z
谢谢!
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