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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+ ~. R$ u' I7 c4 b- i( M- j
其中有一段如下4 l7 {1 O; s; n# N- u
ask turtles with [ infected? = true ]
, N7 C% |# X( S/ {& {我原本以为这句会回传『所有』infected? = true 的 turtle# Q( P3 y- a* ^+ p5 A/ ?7 }
但看结果似乎不是这样。" e8 Q: r2 n. W T$ E# _
- x( B! w/ U( H& T假设所有符合条件的有 5 笔0 A1 C1 K: X3 g
有时候回传 1 笔，有时回传 3 笔，是不固定的" C+ G% r8 v: z( T6 c: U3 g' s0 R
回头查语法定义
! `9 }8 [6 P4 O# w. l$ p4 _" Kwith 0 [, {$ C3 i" s; W6 }3 ], z
agentset with [reporter]
0 j- E: o9 ^/ X9 ~3 e8 M# U; gTakes 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.
7 G1 A! a5 Z8 h* j, O2 I+ ^它只说回传 agents satisfying the given condition( q4 {4 k6 Z+ t" t( i
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 ?
, z q- M( v) }- a0 h8 o' S3 t* ^+ P6 c$ {' b% ?
想确定一下
0 g$ R/ }3 ?$ H谢谢！' c# l. c$ X7 V. m3 z
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楼主
发表于 2013-11-7 00:02:20
