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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
! z* G* w& g+ \. N6 _: `$ M其中有一段如下+ V" R, E+ i3 l$ [! R1 [ B& s
ask turtles with [ infected? = true ]
0 S4 W" D& }8 l. w; }3 y1 @我原本以为这句会回传『所有』infected? = true 的 turtle
( c- f6 R% m3 o9 }7 s! d+ ~' F但看结果似乎不是这样。0 J2 E2 k+ X8 p3 `
) F0 N! k/ x. t/ M假设所有符合条件的有 5 笔1 @1 L2 E: Y$ L- W9 g7 ?) }
有时候回传 1 笔,有时回传 3 笔,是不固定的
: ~0 l2 c# ]# a: i$ u6 {回头查语法定义9 o* \( J8 }% z7 n' I8 x
with 1 ?' u' _) K& ~
agentset with [reporter]
! z% u. E& e/ L6 e) @; j8 G. q6 RTakes 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.
; R; s0 i0 h3 k它只说回传 agents satisfying the given condition
" g6 Q+ L2 t3 u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! k$ a4 G% r7 X- b e
谢谢!
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