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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
+ S+ J: ?( L9 ^; Y# l其中有一段如下
, K% ?$ n0 {% K/ Hask turtles with [ infected? = true ] : m2 P. D3 x" Y) l8 L
我原本以为这句会回传『所有』infected? = true 的 turtle
) @: I8 ^( f( C* h2 K但看结果似乎不是这样。; c3 H! |3 F4 A T' d6 x! h: P
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假设所有符合条件的有 5 笔
1 F/ Q8 m: E" `3 N" O有时候回传 1 笔,有时回传 3 笔,是不固定的$ E7 ]: I% {# X2 M' q* E
回头查语法定义3 v* D" s, \; i2 n! J: ?
with
# i) Z4 ]* V- ]+ ?3 Y2 Yagentset with [reporter] }8 s$ K7 @" Q6 x
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.
) K/ q7 y, g5 w( ~! D D& o+ `# h它只说回传 agents satisfying the given condition
, }7 e: S" z V! w6 Y( D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 ? * _( j; N% t& k- ]& S
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想确定一下0 F& C. c& Z7 S8 A& e7 d) B
谢谢!
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