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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
6 c+ E, ]9 X" j# P其中有一段如下
9 X G2 p6 [6 E( d' bask turtles with [ infected? = true ] . t, F9 a- K" x0 ~* O
我原本以为这句会回传『所有』infected? = true 的 turtle
7 i0 L: c9 c; t3 d- l L但看结果似乎不是这样。2 \% k* s4 X$ [7 }
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假设所有符合条件的有 5 笔
4 D2 {8 q$ Z0 t0 p有时候回传 1 笔，有时回传 3 笔，是不固定的
* A; @- G6 @4 S" @回头查语法定义4 `. q0 q; \8 Z2 @/ }. {* G
with * s4 b( |7 t; [! l3 a/ Q
agentset with [reporter]
; }3 ^* p' b( wTakes 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.0 h; `- A8 X! q/ }+ p6 o8 D: x; f6 F
它只说回传 agents satisfying the given condition
! s& r6 j- b/ j" z9 S+ k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 ? 3 y, k7 W- O& g
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想确定一下: E, ^# t8 |, }2 a6 s
谢谢！
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楼主
发表于 2013-11-7 00:02:20
