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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
+ ^1 F" ~4 W3 t* P z其中有一段如下
% g$ H% u, S M1 J5 l6 V" r, a( pask turtles with [ infected? = true ] - B7 E# E7 k/ ^7 E
我原本以为这句会回传『所有』infected? = true 的 turtle# s8 q& j( z, ~+ _, M1 z
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- Z7 A `# f& v) q
有时候回传 1 笔,有时回传 3 笔,是不固定的+ |4 L: Z2 y6 I7 r3 o
回头查语法定义$ P4 G: I* k5 T9 o+ m/ V
with ' l5 L/ S* G: a, s$ i
agentset with [reporter]% Z! ^8 {+ n4 R; {$ q
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.! {, ~% K5 M" r$ Z0 m2 R9 P
它只说回传 agents satisfying the given condition9 O; ]3 u7 E; j/ R9 J+ }
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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5 m, \5 ^4 G/ X) |" F想确定一下
+ z8 I$ L( ?+ Q. z; q谢谢!
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