loop有吧 / J5 l/ X" T! I4 {+ q; \/ }4 Dloop ( o9 J& u* o% g' y1 O% p9 a( S4 {loop [ commands ]6 y H% u' l. X: w8 b* u' \
Runs the list of commands forever, or until the current procedure exits through use of the stop+ P/ G+ u9 s" e+ W) e# A: H/ O- v8 ?) Y+ E
command or the report command. & K" r5 C8 R/ e# ^& D0 INote: In most circumstances, you should use a forever button in order to repeat something forever. 2 k3 t8 d& G# B. ^; `The advantage of using a forever button is that the user can click the button to stop the loop ) ]2 h( w- |0 O* w 6 H8 ?' _. A. y(version 3.1.3) 9 T' k- h; f+ ^& l" y" R$ j3 q不过好像不大推荐
globals[p ml ]9 z9 U# j7 {" W( R8 L5 F
to setup+ `1 e/ t; l1 [$ c
set ml n-values 200 [ifelse-value (random-float 1 < 0.3 ) [0] [1] ]- |9 U6 K3 i3 R! {1 q. w3 F
set ml filter [ ? = 1] ml5 \; G: A% Y# ?! h) y7 p
set p 11 T0 N3 C; _& r
repeat length ml [ set p p + 1] ) A6 r0 J l4 N: I% G. E3 Q) rif p > 100[stop] 4 d' u& M: A! bshow p 0 m5 k5 c, H5 ]6 h) p3 {! F
end- a) m3 k! A \9 y+ K
; Y+ C* W/ F z. J像这种简单的迭代加和还可以,但如果牵涉到多变量的迭代加和,不知道该怎么表达。还有,如果想取出运行中每个阶段的值而不仅仅是终值,该怎么取呢?: a' N' G5 F- S' @/ G) s& b
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[ 本帖最后由 wjcpcahu 于 2008-4-11 11:25 编辑 ]