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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; m. P2 m- s7 |" k
其中有一段如下" y! m8 X0 l1 s$ w$ i
ask turtles with [ infected? = true ] 3 K( I& m! U3 ~: P H: @0 s
我原本以为这句会回传『所有』infected? = true 的 turtle. t1 ^- \$ B' F' b9 ?5 N
但看结果似乎不是这样。+ g) ^ D1 Q, x9 _
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假设所有符合条件的有 5 笔
( j# K0 C; r5 p9 F有时候回传 1 笔,有时回传 3 笔,是不固定的6 R2 U' U6 Y6 A" H
回头查语法定义
: a2 A; d q, y( [+ Twith
) c; m% y% r9 C$ P2 Aagentset with [reporter]2 E& u& \& z$ R% H- ]+ h
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.$ D# c/ Q( a/ t
它只说回传 agents satisfying the given condition
" M+ ~, i! F6 n( 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 ? / |% E, ^3 E I! }& J, h5 r
; c, ]. S! B6 B想确定一下$ H9 N3 @8 G1 e; i9 f6 o
谢谢!# X. g& y0 V2 ` u5 X; E0 t
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