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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
* v. `* x) m' E5 y其中有一段如下+ f# _$ r( S: W
ask turtles with [ infected? = true ]
# h4 W. c: u1 T* R我原本以为这句会回传『所有』infected? = true 的 turtle, S! Z8 \) c1 ]
但看结果似乎不是这样。, {* n; i/ d0 ~$ J# _4 D3 F
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假设所有符合条件的有 5 笔7 ~) @6 n! m$ p( B7 q
有时候回传 1 笔,有时回传 3 笔,是不固定的
. P# E" L- K$ O& T& h回头查语法定义
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agentset with [reporter]) N1 O, g5 Y9 r6 |* h5 Y# P
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.
- l4 c2 G1 }# A! K* ^5 S" L它只说回传 agents satisfying the given condition
1 i9 g5 h0 q. _0 R' ^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 ? " ?( t) x7 W7 q& ~) a5 m' v i
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想确定一下
2 h$ a8 W' [4 U3 f. g( U2 v谢谢!# L$ v- ^2 d }1 E# E8 J% p7 T# Z
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