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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
3 K7 W! Y z, I% }# K+ i其中有一段如下
( C( w c2 L" u, mask turtles with [ infected? = true ] / I+ t% E7 J- Q9 u& w, O
我原本以为这句会回传『所有』infected? = true 的 turtle: g. o8 ^# x' R( Y
但看结果似乎不是这样。' r; X$ l1 Y0 i( Q
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假设所有符合条件的有 5 笔# Z# \9 n0 q1 ]' J$ Q/ ?
有时候回传 1 笔,有时回传 3 笔,是不固定的
7 l, B% q" y3 w回头查语法定义
+ B% j. ~- X; D& d+ lwith " B+ D9 _2 A6 s, l' @
agentset with [reporter]
- U$ e) z4 n+ O; L: e. D/ |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.; b4 P# [! M# G) o- W" u4 }" j
它只说回传 agents satisfying the given condition
7 o8 j3 L3 d! 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 ? . n H0 P6 w' X3 o& O, x! z
. c; d, x, Y/ [. C# ]+ W
想确定一下
- C' P8 f& @2 Y谢谢!9 Z1 m ?% Y/ n
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