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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:# d }) q) ^6 e
begin P_Order arriving procedure
x. w. X% g2 {0 w5 A set V_NumWanted to 10- q! E w1 i6 b
set V_NumOnList to OL_List1 current value
! v; w) ?1 e7 y3 S order V_NumWanted loads from OL_List1 to P_NextProc
* M6 P8 f$ @' K& j. b' m in case order not filled4 J; g4 p. n4 c5 k! X
begin
/ u- `0 F* P* \, e; D! I, ^ wait for .01 sec9 g% M% ^+ Q! G, G
decrement V_NumWanted by V_NumOnList - OL_List1 current value
0 m. o$ E1 z+ G9 H- O set V_NumOnList to OL_List2 current value. F- p0 S- e* q2 z
order V_NumWanted loads from OL_List2 to P_NextProc$ h- r" }2 W* C* Y4 _; ^
in case case order not filled
. D# l$ x9 M/ [ .................................................................& Q: Q& U8 o& q+ ]3 R2 ]$ s5 T
( U7 i/ g4 ?- z/ \
" _& m4 {. D# O( Q; P0 J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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