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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* Y( H" `7 b4 M5 d" G# ?& G
其中有一段如下1 ` y. j2 H- u6 o# E8 Z
ask turtles with [ infected? = true ] ' {; P8 {0 X, L% {7 u: R
我原本以为这句会回传『所有』infected? = true 的 turtle0 I8 c5 `$ H, Y% z# S% J5 z1 J+ R8 u
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
2 d! b, f% T' n. ?' S有时候回传 1 笔,有时回传 3 笔,是不固定的
$ H0 t6 l+ M+ ^- P2 N回头查语法定义: C, h) b, s( [( \
with
5 M) z5 x% c1 X% Aagentset with [reporter]
' }/ u% J1 ~. U- |+ ETakes 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.
+ t+ ?% W. z# }# \/ _3 c6 _它只说回传 agents satisfying the given condition
9 p8 ~. I9 \6 t0 r( F! Q( c! d9 a7 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) M: d. F9 \/ T* \2 t$ P4 [
谢谢!- L$ Z% U6 A5 L& q5 y- a9 i" ]
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