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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
; x9 P% f: Q2 d! Q1 G ]其中有一段如下
& f; A2 A9 O$ W8 o* V7 ]ask turtles with [ infected? = true ] % P I: `8 d9 i) W" k0 S
我原本以为这句会回传『所有』infected? = true 的 turtle* E; ^( E8 b1 s) s. i. p' m
但看结果似乎不是这样。. e& `. e( t- @6 i( I; P6 S+ ^
: J' |7 I% ]0 L/ X" Z% j假设所有符合条件的有 5 笔 j# R/ z7 F) Z* t$ [
有时候回传 1 笔,有时回传 3 笔,是不固定的; {2 l' a9 p1 Y: R* t
回头查语法定义6 k0 {1 W, ]0 y Z# v0 U" I
with 5 f9 ?6 ^* K( J$ ^" O
agentset with [reporter]0 ~7 h$ c I ~' f$ V
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 F& p2 @% J+ ]2 b它只说回传 agents satisfying the given condition# |$ j/ a5 u+ K. s# 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 ? 9 @9 G5 b/ V* L k5 D
9 d' ~5 h* L: ~8 f$ W: w想确定一下
, A+ c3 o3 n" h. P* Q7 ^, H+ u' Q谢谢!+ ~- ^- X* ~% Y8 P
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