loop有吧 6 F# T T9 N8 u/ p% D0 _' Hloop 1 H/ D% B! U2 G& n/ `& f5 d6 xloop [ commands ] ( J4 I. i6 U Y: NRuns the list of commands forever, or until the current procedure exits through use of the stop$ |. O" R# Y- G! d3 J5 K; X
command or the report command./ v* `( m5 T5 }! E0 V0 z% [
Note: In most circumstances, you should use a forever button in order to repeat something forever.0 `* Z8 \$ \: ^6 \3 x
The advantage of using a forever button is that the user can click the button to stop the loop. T b$ s1 `/ `8 V p2 J- e) J! o- {
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（version 3.1.3）6 e, ^7 P7 I8 n. q
不过好像不大推荐
globals[p ml ]5 G5 ?: `* K7 T ]; v3 U k
to setup/ {" I: L' ? ?6 O* F
set ml n-values 200 [ifelse-value (random-float 1 < 0.3 ) [0] [1] ]/ o1 M/ n7 c) D( J% I- z# a2 O9 S1 Z( k
set ml filter [ ? = 1] ml & H" E0 j+ d! ?. J8 I, @6 A& P* ^set p 1 3 M8 k& m4 z5 X% j: ^0 lrepeat length ml [ set p p + 1] 4 t5 T& t! u+ V- Kif p > 100[stop]$ [4 [/ h' X' g! }
show p 2 Y* I* }* d' a2 U/ ~) ]3 Z
end 3 I& G ^8 } ^6 O2 i; _3 f9 I# l0 { J/ n2 i: [
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？ $ ]: ^, c. h. `$ G9 ]& v4 J D - U8 H1 ~/ `9 r. t6 L) l[ 本帖最后由 wjcpcahu 于 2008-4-11 11:25 编辑 ]
发表于 2008-4-10 17:04:15
楼主
什么都不说了，都在程序里了。