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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
8 x0 M6 @$ f! k9 ~其中有一段如下
* s8 c1 Q0 `5 J7 \, U% Xask turtles with [ infected? = true ] ; C8 o% h2 y, g) A1 ^! o, L; X8 i6 V
我原本以为这句会回传『所有』infected? = true 的 turtle' b' F- B$ O% `4 Y/ c, B1 Y
但看结果似乎不是这样。9 A( d0 i7 |5 @& Y
+ f. P8 k7 b) ^* x假设所有符合条件的有 5 笔
$ F9 B7 m# M9 f" R- D* u2 o有时候回传 1 笔,有时回传 3 笔,是不固定的
2 f2 e& B* p' H! T9 n回头查语法定义6 \- }0 ]. ]% {9 O& [
with
0 T& r+ o! P' E8 k3 A% qagentset with [reporter]' |6 A. G; H) K4 X* E' w
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.
8 v1 U6 F' _! B `* e9 `) [& T它只说回传 agents satisfying the given condition
, Q7 D; L& X* U5 ?0 H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 ?
2 ] S8 t% R7 T
/ o/ t9 `# |; }7 I; t# {想确定一下% ^ A; B9 n: C# v
谢谢!" V5 k9 [1 Y0 h; H& h Y6 c
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