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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" O7 x: J+ u6 n
其中有一段如下& }/ L- @8 a2 v& Z
ask turtles with [ infected? = true ]
1 Q( n* a( A# R6 m" L我原本以为这句会回传『所有』infected? = true 的 turtle
, f1 S1 p% z4 N1 G但看结果似乎不是这样。/ a1 w- e; Q( K" @% y* {
4 A' M. v: p8 ^/ z+ `6 d2 K" i. j假设所有符合条件的有 5 笔
9 o% q5 \( T8 b8 q; p1 d! M有时候回传 1 笔,有时回传 3 笔,是不固定的6 Q+ v+ B, a# d Y
回头查语法定义& |2 ?9 }/ \% R4 x+ v# s
with ( j1 \& x8 b2 E9 f" A- j4 [' O
agentset with [reporter]' Q/ M, q# P( G: I- j5 Q T
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./ @! b( ? j* Z8 O
它只说回传 agents satisfying the given condition* S' a. ]* x9 w( s
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% C7 o5 p" X8 N+ t% I2 C
8 }' V( c$ Z1 r' ~想确定一下
) X0 `, y; O" s* g谢谢!' {' t4 U0 N0 V8 I+ u
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