tricu/lib/Patterns.tri

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!import "Base.tri" !Local
!import "List.tri" List
match_ = y (self value patterns :
triage
t
(_ : t)
(pattern rest :
triage
t
(_ : t)
(test result :
if (test value)
(result value)
(self value rest))
pattern)
patterns)
match = (value patterns :
match_ value (List.map (sublist :
pair (List.head sublist) (List.head (List.tail sublist)))
patterns))
otherwise = const (t t)