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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; B7 e# |. s0 Q) b
其中有一段如下
# p/ e: Z5 U1 h; u( G. o2 e- ]ask turtles with [ infected? = true ] ( Q0 J, T. c' W7 N( P. F
我原本以为这句会回传『所有』infected? = true 的 turtle
; D5 P4 G$ {' T/ y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
+ U7 X7 L! w5 M' w有时候回传 1 笔,有时回传 3 笔,是不固定的" g% x7 _* E9 W* H4 t
回头查语法定义' n& {) K1 }' g# t2 r
with . d; ?( [9 g( ], l* f6 a
agentset with [reporter]9 S. W6 r! b' Q Q3 S4 f0 [
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.2 E* K, e6 n- y4 ~, N8 r
它只说回传 agents satisfying the given condition4 E7 V0 d+ [ r- }/ G' \
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 ? 4 D% o* Y" ~8 c V8 h) M. _( M* T
5 ]# a3 ` G- r想确定一下( T* Z$ ]# ]% Z# h. @
谢谢!
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