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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( n! F4 L6 g [: k) ?
其中有一段如下( j3 C4 f! K. `0 o5 Y3 h
ask turtles with [ infected? = true ]
3 O- V/ h# z/ C) d1 L我原本以为这句会回传『所有』infected? = true 的 turtle2 I+ W9 \) C- m+ j
但看结果似乎不是这样。2 v9 m: ~0 O4 T1 ~, u6 y
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假设所有符合条件的有 5 笔7 }9 X; h2 G9 Z$ e( z
有时候回传 1 笔,有时回传 3 笔,是不固定的
) w* ?3 D) D% x6 D% V- O. l2 ?回头查语法定义
0 ~* p b, D; G% L5 E" @5 T" Lwith
' b# `8 J- m2 Y7 n8 K0 F. `agentset with [reporter]& ~( l' d8 O2 t
Takes 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.
1 B1 H+ n3 F( c- a" T它只说回传 agents satisfying the given condition; Y3 A) s$ \' `/ u4 W( {# V
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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, l! |# O D- E, n2 m想确定一下# b% P' x9 z/ N4 N
谢谢!
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