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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
2 I1 d6 O8 n3 ?2 U/ B1 f其中有一段如下
4 j* o; T! U3 ] U3 a6 F, Aask turtles with [ infected? = true ]
1 t; N6 P$ }! d! g/ S) i! }, j我原本以为这句会回传『所有』infected? = true 的 turtle
* j3 T) G( \- s8 `但看结果似乎不是这样。8 B4 r ~+ C1 h* ~
0 T7 j8 a" S6 @) e假设所有符合条件的有 5 笔# W9 h& w* ]/ G( d9 ^- ^
有时候回传 1 笔,有时回传 3 笔,是不固定的, ^# M8 Q' X9 A, @3 m( }( l
回头查语法定义
$ Z r! J# b, k" y; Y: Y8 N5 Rwith
- P! Z- Z! k6 f9 U$ }1 s7 Tagentset with [reporter]
& N6 f2 \4 l# X! [8 ]: x9 hTakes 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.. J1 e( ~1 K2 _) @! b% c! \5 D% r
它只说回传 agents satisfying the given condition
* i) o {! O: y7 A5 {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 ? 6 ~' X* ~2 K( o- t
7 @. ?1 C3 c% e
想确定一下
, }: |/ N$ ], j% y: ^谢谢!
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