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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 U% ?: K9 F+ H; x; y R! h: ?* ~其中有一段如下
# n1 p! E1 \( y# k; c1 d8 F( r2 P: nask turtles with [ infected? = true ] * }* U. K& V/ l) {5 p3 w
我原本以为这句会回传『所有』infected? = true 的 turtle" r8 o$ A: G& X! h
但看结果似乎不是这样。" A! r2 L/ [5 m' j2 b
; y5 U/ L/ z! o: r- f% o假设所有符合条件的有 5 笔
# y9 j& U+ B' X, j O. o2 e有时候回传 1 笔,有时回传 3 笔,是不固定的 z# k! V; l. y6 v
回头查语法定义' m+ M5 Q9 L+ Y! D$ m
with
( E' ~# I* T$ r; O. V0 Magentset with [reporter]
4 J0 q! o- h: G/ UTakes 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.( M4 |* V6 N: W+ h- i7 i9 U
它只说回传 agents satisfying the given condition$ N5 n0 P* s: m! \
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 ? 1 ]' g: M( k. K0 w" f
, `' ?+ E; Y+ X3 b想确定一下
0 b1 X S) _. \; s9 O7 w谢谢!) i/ l% M9 m5 @* s2 {
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