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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
( x! l$ P7 k% d. D8 _% x其中有一段如下
3 e5 C" }3 S: ^ask turtles with [ infected? = true ] 8 Q- ]& ` Q( Z" ~) F1 ?2 |! ?
我原本以为这句会回传『所有』infected? = true 的 turtle
8 s6 ^% X- x0 H( w5 o; P' j2 B但看结果似乎不是这样。
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1 Y0 g* }- G" |9 J" G1 D! Z假设所有符合条件的有 5 笔" b2 P& o- `' D: v) b7 _! [
有时候回传 1 笔,有时回传 3 笔,是不固定的, x+ l( N; E2 U _# [. P
回头查语法定义
3 I7 Y3 d$ _) x6 l+ ^0 Twith
% Y& }1 G5 }$ D1 j( s2 F, r. Eagentset with [reporter]
2 C/ X, {. t9 m+ vTakes 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.) n# G+ \ g3 P j* }! U( N
它只说回传 agents satisfying the given condition
D6 y4 E$ |6 \ l& Z5 B* f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 ? , @9 C7 K6 a3 E3 v* v! ]
4 D" w( M, ~- K, z! ?4 R6 s5 F想确定一下! g/ W! K' x! k( e; E
谢谢!
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