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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
7 v$ \5 z% I- W其中有一段如下
6 j# P2 t+ M. L- W/ d/ h5 x% U! ^ask turtles with [ infected? = true ] % c* M, y! a5 y- _
我原本以为这句会回传『所有』infected? = true 的 turtle
$ h' _* L3 r/ ?, | i1 Q但看结果似乎不是这样。 d* C+ V, a2 L/ `) h' w
% F) b0 O6 z) N2 k# A假设所有符合条件的有 5 笔
# R; s' R1 t( P. [! n有时候回传 1 笔,有时回传 3 笔,是不固定的
. X* ?& P8 p/ P; k' ~8 v" L回头查语法定义
M+ _* U' F e4 J2 E( Owith
' x7 a1 [) {' k! S' n+ Cagentset with [reporter]! H; r5 _) C% x/ E4 f4 O; S( W
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.* t3 J5 T) p E6 q- E Z- V( `8 g; ?
它只说回传 agents satisfying the given condition
" I6 X# ~6 q; ?8 C4 U/ f) G" A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 ?
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想确定一下4 w9 D k+ [9 n- c6 ]7 C& `
谢谢!
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