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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: J+ d" d; I+ A3 m
其中有一段如下9 f: `) m" i& B# @
ask turtles with [ infected? = true ] 0 ]8 n; X& ^# W) C
我原本以为这句会回传『所有』infected? = true 的 turtle" c7 j6 ?! v* x8 z
但看结果似乎不是这样。) U. M1 x/ Z& u6 a8 b+ Z+ w
- o l3 n2 q4 b) v3 }! u假设所有符合条件的有 5 笔
, y' L$ l. i5 Q, j! H2 z7 R有时候回传 1 笔,有时回传 3 笔,是不固定的! _/ H, D3 N, u- c
回头查语法定义; ]2 N9 v$ d1 U, ~- z
with
) c9 Z' _: `8 W8 {, Zagentset with [reporter]# x m9 q2 \4 }' x5 }
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.
% X$ D/ S9 @9 i0 q2 V) K它只说回传 agents satisfying the given condition& I* L2 A4 O/ v; l# W( T
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 ? ' p! p; e5 ?& y, i. P" y) }
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想确定一下$ I# r* h" R- z5 i
谢谢!
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