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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
5 _! C) |( G( b1 t% w1 q其中有一段如下9 W, x0 j* L$ u0 L) S( F# b- h8 H) s
ask turtles with [ infected? = true ]
5 D- i ^8 G. J0 u/ T+ E9 t; ^我原本以为这句会回传『所有』infected? = true 的 turtle
8 {/ L" e/ {- F' p但看结果似乎不是这样。6 v/ u9 w) Y `# a8 H
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假设所有符合条件的有 5 笔
! `. Y, J l% d* w( {有时候回传 1 笔,有时回传 3 笔,是不固定的
5 z1 Y6 r5 E% _, u [# x$ W: z回头查语法定义
. X# _! W4 \0 e- o2 l* hwith : P3 l1 `7 v1 z w. b8 B: A( X# L
agentset with [reporter]
! A6 X; t* J1 mTakes 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." @: c) r2 d& ]
它只说回传 agents satisfying the given condition
: T# q9 Y$ C9 ?+ f% p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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, X7 O% x. R/ t" V$ |1 f; I想确定一下; W' J {4 Y/ W( K- a2 G3 { _
谢谢!
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