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5仿真币
在使用Order List时,当一个order list满足不了order的数量,要用第二个甚至第三个order list,有一段程序,请大虾解释一下,多谢!程序如下:! b( T, e' h4 e t: \
begin P_Order arriving procedure8 t. s+ w- G/ |6 P o# W$ w
set V_NumWanted to 10
, q6 C$ U0 T* G6 N) v* V" q" J& l% v9 W set V_NumOnList to OL_List1 current value# w! t/ a8 E9 F; ^. @5 ?
order V_NumWanted loads from OL_List1 to P_NextProc
% G. N2 n4 G: U6 C! E- S in case order not filled
" _& [ I- U: H4 {/ j N7 t! | begin
! g, d5 }8 v* R' o$ H wait for .01 sec* c: r T+ l# F
decrement V_NumWanted by V_NumOnList - OL_List1 current value
! w( e% @2 J& d9 R set V_NumOnList to OL_List2 current value8 D0 d- t) X5 A* B
order V_NumWanted loads from OL_List2 to P_NextProc
3 n$ ?1 o1 I" }2 @& q in case case order not filled F! ~7 l+ q4 C" {, v
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+ i; h- K* V, F7 `
我就是不明白上面用红绿色作标记的那句,为什么后面要加-OL_List1 current value.用前面绿色部分,即把不够的load算出来就不行了吗? |
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由于有in case order not filled这句,所以我觉得红色部分应该可以去掉。你还是自己测试一下吧,不一定要按书上说的做。
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