|
|
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' X) e8 l- R l( V1 Q
其中有一段如下7 g+ C1 s* W/ y% u9 b
ask turtles with [ infected? = true ] ! s. {) h9 t# r9 ?
我原本以为这句会回传『所有』infected? = true 的 turtle
) @( j$ m8 J9 Q6 P但看结果似乎不是这样。% a6 ] d) N6 q
+ G4 z4 c2 l \ d' ?假设所有符合条件的有 5 笔
$ w0 \2 ?' [ M: R有时候回传 1 笔，有时回传 3 笔，是不固定的
0 I( {. i" Q3 {+ x- u回头查语法定义
! \0 s C7 M) f1 ywith
. c m0 B& n, |, U. ^+ Oagentset with [reporter]
! M4 ~$ H F3 z( V' ZTakes 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.
" n3 r8 s( e9 d0 C2 q( F/ j它只说回传 agents satisfying the given condition4 v3 w, e# j$ K' P$ B' b
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 ? : g8 a3 v2 X0 p# Y7 m/ Q2 q
9 H3 W2 q' E2 q$ Z. `想确定一下( x% E! K' R+ }# a; ^6 o% A$ A
谢谢！; d9 m/ ]9 R, o7 W6 v
|
|
[复制链接]
楼主
发表于 2013-11-7 00:02:20
