|
|
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$ l [! @) W/ @, }: j; ]
其中有一段如下
- s, D$ p5 j: `: c3 Cask turtles with [ infected? = true ] / y5 T3 h5 T/ N% [* c8 j; ~# ~# Y
我原本以为这句会回传『所有』infected? = true 的 turtle
$ {3 S" Z4 ^) W6 g @但看结果似乎不是这样。( ]' V5 l. f1 B& M- f
1 x. s" [' F- m# F假设所有符合条件的有 5 笔3 t7 S4 V9 P! m5 d
有时候回传 1 笔,有时回传 3 笔,是不固定的
0 Q9 n% n7 W+ K回头查语法定义$ B% m. x3 g- Y- w) }8 x2 o- ?6 D
with , C, e6 x% ?$ I2 u% ?
agentset with [reporter]
8 z8 V5 R4 X X& ~9 Q1 PTakes 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.9 }* O5 [% m! y" Z) U
它只说回传 agents satisfying the given condition* h K% v1 l9 g
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 ?
: q! A3 ~2 o9 H- @1 _; I7 X+ y+ S/ P2 F3 y
想确定一下/ ]6 r+ K; A9 w1 W- b j/ ]1 [9 K
谢谢!
. O: y0 [8 `! E) ~' b8 v |
|