|
|
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! m* g! @1 T. W7 G& A% _
其中有一段如下
: \$ V' U8 U1 [; v, w* x% ]ask turtles with [ infected? = true ] . ~! Q% O( D2 X! r1 A- Q
我原本以为这句会回传『所有』infected? = true 的 turtle
8 V7 S& N: F8 [ B! w- f但看结果似乎不是这样。
$ y. R& l7 j, @( k* ~ J5 y! _) ~ c f8 C: ^) Z) u
假设所有符合条件的有 5 笔
! H5 X2 s* p4 [, s* N! Q有时候回传 1 笔,有时回传 3 笔,是不固定的2 |- |' o" U0 c# I2 T6 a, T
回头查语法定义, w( |' a* b1 X$ I; i- c- U- `5 `' ^
with
# s7 O/ z5 s/ o6 C# x! e7 fagentset with [reporter]; {! l! Q' d6 f8 U7 _
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.
; O3 @# {* k1 F0 K它只说回传 agents satisfying the given condition
' B/ X, c8 s7 @4 D; C( j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 ? 5 h( n; S$ O! r
0 r) O9 b4 H2 [, x& [* K想确定一下
2 W* m t2 `2 F. S9 x' f2 K: x. W谢谢!
8 x( p; |8 i8 G+ ~" v3 y8 N |
|