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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
8 ?3 r2 U" q+ c: z; s* q( g' E. i& w其中有一段如下# W# O5 E/ `% q- S/ j0 \
ask turtles with [ infected? = true ] 5 D" M' O, Z' i' T- P) g9 a; w! g
我原本以为这句会回传『所有』infected? = true 的 turtle
* y( q. i8 E2 i" s但看结果似乎不是这样。
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0 e2 O2 I- `2 X0 x1 P假设所有符合条件的有 5 笔
: A8 L# A# d& P0 L3 `( n8 I有时候回传 1 笔,有时回传 3 笔,是不固定的( Y6 F7 R* e1 C! P2 F3 I
回头查语法定义: P$ Y1 }( I/ d: _" p6 L
with
5 c6 c( J8 D0 z4 K" q" e0 D# Bagentset with [reporter]
3 Q0 w0 M8 s; t- w+ JTakes 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.
) `$ e- H3 t) _8 @+ \% g# _- O它只说回传 agents satisfying the given condition
: s- s5 s: |# v2 r( s$ I" c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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& A3 D' U9 ^0 w. U9 {想确定一下
! e* A' A2 W1 u; L谢谢!/ E/ P+ h8 c% P; O3 O- Z$ r& Y
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