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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 I& {" z: i6 |2 }% a) M其中有一段如下
2 \7 m! V, ]% ~8 w9 bask turtles with [ infected? = true ]
" e V; }0 W: x$ H; Z& a我原本以为这句会回传『所有』infected? = true 的 turtle9 s4 s# K5 @$ C# h* |& m& M
但看结果似乎不是这样。& T9 z1 d9 P! ?
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假设所有符合条件的有 5 笔! Q5 ], R0 R B% Z8 _/ Y* L
有时候回传 1 笔,有时回传 3 笔,是不固定的( [. `! t# Z: V7 \
回头查语法定义
% a% `7 n! C; l% R6 j' Cwith
% B2 }$ Y5 i3 g: ]! Fagentset with [reporter]
/ I1 N! U4 t4 m. X4 y& Q5 m! PTakes 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.
& L9 _* x) n' K$ N+ o2 ]+ C0 r( P+ l它只说回传 agents satisfying the given condition0 E& i: t# ?+ Y4 b
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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' [8 x) Z0 M0 Q% Z: a1 X想确定一下
' w; m; k0 ~ v* `+ |谢谢!4 W6 A; y' N- h
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