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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
" _0 x# W X0 i" W+ ]" ~0 @( i其中有一段如下
! k1 }* I: ]4 ?& l1 T, i$ C+ yask turtles with [ infected? = true ] 9 \5 X( g4 @6 K9 v
我原本以为这句会回传『所有』infected? = true 的 turtle
; @/ C) \3 o8 v; p5 b3 q. v但看结果似乎不是这样。$ L* D! C' b. r8 j% ]
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假设所有符合条件的有 5 笔# _0 s8 E' |% [. d3 q
有时候回传 1 笔,有时回传 3 笔,是不固定的
1 z7 O# b; ]+ V' C0 T0 v2 N$ A) U回头查语法定义6 M1 M) f+ \- o, L: f; a7 D
with ! y$ y+ L; O' [
agentset with [reporter]8 e3 s! y1 g6 _5 L0 i
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.. H" G g& G- o; I: A
它只说回传 agents satisfying the given condition9 {, }2 R% t: \+ B
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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l" i8 |, U" W: |$ X, |! O& x想确定一下
2 V( P; ~1 Z# T, y谢谢!7 a/ \7 x; a- ~& R4 R! I p
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