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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:
2 T; C, m _7 k! L5 x: W9 p lbegin P_Order arriving procedure
" M# g0 C9 @6 |% G9 O z set V_NumWanted to 10. J4 N' s& E6 z1 k
set V_NumOnList to OL_List1 current value% X3 s+ s0 p4 M$ s+ |+ x
order V_NumWanted loads from OL_List1 to P_NextProc3 D" c, z2 [. V& M; s
in case order not filled
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wait for .01 sec
, X% w) A* {/ S decrement V_NumWanted by V_NumOnList - OL_List1 current value" E4 ?0 K; s& a% p& f6 V% b% [
set V_NumOnList to OL_List2 current value8 N1 C* P3 }3 U: p" x! S
order V_NumWanted loads from OL_List2 to P_NextProc
( O6 n( I. W: s. {7 k in case case order not filled
: T# q0 T! O. @) W: m& y .................................................................( ^6 Q, n! ], L) q: Y5 L
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C( z" ?9 B/ \0 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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