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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
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9 C0 n# B2 e2 U2 O# bask turtles with [ infected? = true ]
/ |( t; q; \% b2 K9 {我原本以为这句会回传『所有』infected? = true 的 turtle
4 X. _: p; }/ M2 H* n但看结果似乎不是这样。8 _; w0 k$ k; H8 J2 |( ^
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假设所有符合条件的有 5 笔8 A& q) N1 Z, {9 h7 Q
有时候回传 1 笔,有时回传 3 笔,是不固定的! o/ w7 N+ V' y7 C
回头查语法定义2 i% y% X. B$ _. E
with
, y/ x2 w& ^+ j9 w* `agentset with [reporter]* e/ A/ ~* M- _# W6 z' G0 Y6 z
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.
: J9 H6 r8 \5 z' U( _2 v; b# J& U它只说回传 agents satisfying the given condition1 w: c w& l2 C6 ^* ] v' x: \6 ?* s
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6 g2 l X" _$ X) d; C0 Q! }5 f/ V
谢谢!
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