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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, G: a" o, ~1 J! D0 [& I
其中有一段如下
( H' |4 {! ^5 t# ^ask turtles with [ infected? = true ]
1 I; m- s! U* {: G# V; r我原本以为这句会回传『所有』infected? = true 的 turtle9 d0 [" U$ ^0 |" H
但看结果似乎不是这样。; w0 a5 t1 X4 A8 G! C9 I$ Y6 h( X
& c' n& B" j* U3 y- Z6 g8 @ h* p假设所有符合条件的有 5 笔
* z: K, B8 S1 [* b有时候回传 1 笔,有时回传 3 笔,是不固定的
( a4 F1 t. w3 Q回头查语法定义
" K$ j3 R& n( ? e/ gwith
|# K% I2 i7 M @* q# [# E$ bagentset with [reporter]) U: X( J' D& @0 k$ T5 l0 N
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.
& X1 l! }$ h, L/ e它只说回传 agents satisfying the given condition
0 F& y* T8 K( \/ E5 ]7 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 ? 0 N$ d" b# Z& p. p* i
8 ^( w2 C- T: ^1 f+ J% r+ R5 h想确定一下% O I4 N2 X/ L# w1 n2 i# N* J+ t
谢谢!) X% c' W- O% s) v( x
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