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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9 M$ F6 l) f \5 Z/ L! I
其中有一段如下) V' j. d& b' j: I" y
ask turtles with [ infected? = true ] * X5 N" u( ?0 J: B% t3 x/ M5 l
我原本以为这句会回传『所有』infected? = true 的 turtle
( t: c% F. C: V% O但看结果似乎不是这样。, Z7 ?8 i2 L" a: U3 f
, B. I4 I7 d: N' k; ]. A. a$ i% B7 i假设所有符合条件的有 5 笔
9 y0 b) a0 h* ]8 |$ E5 z" l, X有时候回传 1 笔,有时回传 3 笔,是不固定的6 Q3 z3 ?1 d5 R
回头查语法定义9 L! t+ x) g4 g/ I0 f3 s3 t
with + w. X; h D8 X# m# a
agentset with [reporter]+ {& }2 r% N8 D _
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.
; J1 y) ]. i% r7 r/ S+ o它只说回传 agents satisfying the given condition
2 P& {# H& C* {9 q# w# o+ O# f" O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 ? % S2 `2 i; z: ]: I. g
; G( U+ G; Q2 f6 z1 d% G; H+ q {想确定一下+ e3 p# ]; M- b, I& L: Z4 Y7 v
谢谢!. I5 ` i- L2 \+ o! [
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