In Haskell- all lists have a head except for empty lists circular list.docx

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A Haskell list can have a head except for empty, circular, single-element, or headless lists. An expression having the type of a pair (2-tuple) can have either 1 or 2 possible values. In Haskell, pattern matching and the where clause can be used together.

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In Haskell, all lists have a head except for empty lists circular lists single-element lists headless
lists How many different values can an expression having type of pair (2-tuple) have? unlimited
1 2 0 In Haskell, pattern matching and the where clause, can be used together. occasionally
sometimes never always

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