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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
& k S1 S9 ]9 x其中有一段如下8 F9 J6 L7 g9 ]
ask turtles with [ infected? = true ] ) N0 l- A, f7 U9 X1 H# _
我原本以为这句会回传『所有』infected? = true 的 turtle/ U6 N3 n7 k0 V8 b& a
但看结果似乎不是这样。
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假设所有符合条件的有 5 笔# E0 V% b: A- C8 d3 [
有时候回传 1 笔,有时回传 3 笔,是不固定的
8 k0 `& l9 i0 _2 Y3 J7 ^8 K回头查语法定义
+ D, M8 c( `) [+ i8 m) T/ j' Iwith 4 }$ G$ e) ]" I* ~" `/ p4 ^' n
agentset with [reporter]5 h) j" V. R: X/ R6 l% b4 q
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. J% n# [+ J5 Y" x7 H9 t
它只说回传 agents satisfying the given condition
7 A1 M5 J ~; j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 ? ; D! a3 c1 v1 B. R$ |( b c U$ F
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想确定一下; O! Y7 r5 F) E+ b& d( _
谢谢!" P$ n3 L, P$ e0 U7 k1 Y( H( ^, z
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