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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% V- u5 P/ D* A# z7 o( C% V0 w
其中有一段如下% N- G+ A7 X, C0 t
ask turtles with [ infected? = true ] 2 i _0 D( D) O
我原本以为这句会回传『所有』infected? = true 的 turtle
3 V% j5 z8 u# w' t2 z但看结果似乎不是这样。
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3 q- T P5 q; O/ z* @/ R( q( p6 v# s假设所有符合条件的有 5 笔
! z P o8 d- K" B有时候回传 1 笔,有时回传 3 笔,是不固定的
8 H* W* x, ?4 Y; v0 v% V0 y- X/ ?" x回头查语法定义
8 E3 q/ {5 [4 w) [2 D) _with 2 H* A1 J4 B1 u7 T6 j- q6 i/ P2 v! e
agentset with [reporter]
' L- V6 w6 T6 j: ?# d9 I& }$ HTakes 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.
& e* \% `) q) B9 \ S) d它只说回传 agents satisfying the given condition. b+ x, a4 W9 `6 `$ {
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 ? ) r1 p$ k' `" j9 U" e
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想确定一下 n/ X6 m2 \6 i. R5 b& w6 [
谢谢!' h% N6 Z. E, B8 N- @" Q( x) q
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