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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
) S9 _7 U1 G8 @( c0 Y f其中有一段如下
) |. Q/ F2 Z7 bask turtles with [ infected? = true ] ! e; ? S% h. {
我原本以为这句会回传『所有』infected? = true 的 turtle3 s4 i- Q/ M0 H' c) j3 O! ^0 T
但看结果似乎不是这样。) o" I0 F Y, _+ q. F# [
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假设所有符合条件的有 5 笔
- X3 W. r8 T3 K T, }; f# A有时候回传 1 笔,有时回传 3 笔,是不固定的% A% M1 k& d3 u9 ^0 E/ z
回头查语法定义
. w5 w# y |6 Cwith
% c, H) e/ m4 Y3 a' Kagentset with [reporter]& k" y9 y; ?; ^3 M) [0 e+ }+ d3 x
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.
( @& S8 H( Q( H2 j; y它只说回传 agents satisfying the given condition
7 d# a+ g3 n: X, |! n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 ?
6 ?5 W1 l1 @. t8 x7 o1 D1 T
/ Q+ L- i2 U: W0 t想确定一下; S" Y$ u4 E) t8 z; k0 A0 O/ {
谢谢!8 _1 S$ h" @4 k l
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