But it's in ont of the "set" operations. For example try :
[1..10] \\ [3..6] [1,2,7,8,9,10]
But also :
([1..10]++[1..10]) \\ [3..6] [1,2,7,8,9,10,1,2,7,8,9,10]
So _all_ the elements with values in [3..6] where removed !!
If that's what you want ! Perfect ... if not : what do you want exactly ? List substraction is not uniq.
Pierre
Bright Sun a �crit :
In Haskell, ++ can spends second list argument onto the end of first list argument. How to substract the second list from the first list?
For example, [(5,1),(4,1),(3,1),(2,1),(1,1)]
substract
[(2,1),(1,1)]
I want to get result list:
[(5,1),(4,1),(3,1)]
Tks.
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