
29 Aug
2001
29 Aug
'01
9:06 a.m.
Hello, What is the use of ~ symbol in Haskell? For example in prelude function unzip unzip = foldr (\(a,b) ~(as,bs) -> (a:as, b:bs)) ([], []) It works fine without the tilda. Is the use of tilda specific to lambda expression? Thanks
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Cagdas Ozgenc