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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 a* z1 J6 @7 U. w8 I
其中有一段如下
, {+ C7 G' {1 y M9 \$ ~ask turtles with [ infected? = true ]
# \& G1 G% d% @$ A& _- I我原本以为这句会回传『所有』infected? = true 的 turtle+ F: l K! C" j# A
但看结果似乎不是这样。5 i# P/ P# O* s" v
5 Z, c* Y" V9 E' N6 u0 a! k/ q- Z假设所有符合条件的有 5 笔
* s/ w+ c7 f# S8 y: h有时候回传 1 笔，有时回传 3 笔，是不固定的
% t2 |$ Y# r3 @$ E z( {回头查语法定义5 Q! G, j# r9 U% Z( g+ R4 S' }
with
- g( ^8 ^4 ]& N' }agentset with [reporter]2 u4 y5 E* m8 r, B6 N) F
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.; `1 P* K% I& g* S" X% k, O. d; Q
它只说回传 agents satisfying the given condition
. d: W/ l$ |8 _5 p* m: L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 ?
; I, r+ u5 H/ _0 A! a( h) n' b# n$ Z1 Z; Z
想确定一下2 w k6 X4 N1 s d
谢谢！ Q, i' ?( c0 C: c8 X
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楼主
发表于 2013-11-7 00:02:20
