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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" L+ `9 X( g( Z- F9 m
其中有一段如下. R3 U- ^6 n3 C6 [$ |
ask turtles with [ infected? = true ]
8 Q# M5 d# `' M我原本以为这句会回传『所有』infected? = true 的 turtle' w9 t. o2 i+ W& l( b* [
但看结果似乎不是这样。
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9 H6 |4 O" K7 m0 g% D假设所有符合条件的有 5 笔9 [) |/ l" S5 ^6 X% z* u
有时候回传 1 笔,有时回传 3 笔,是不固定的; p* q6 N* Q4 Z- N; b* T
回头查语法定义/ H$ x4 m: s X) D. W7 d" S' M
with $ ]! s, j+ ? j( A6 A0 C! _, M; g
agentset with [reporter]
# X. X& D& G4 U2 f, d& B4 a& [2 qTakes 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.: L( F( R; {, U. K
它只说回传 agents satisfying the given condition) {6 n0 o% y; Z
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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/ h# n+ o& t. O! w6 s) x' s想确定一下
# h' H/ n" R6 Z. I; P- M谢谢!& y: B: ^* V( f% r, d0 C! @' |
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