lean4-htt/old_tests/tests/lean/over_notation.lean
2018-04-10 12:56:55 -07:00

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Text

constant f : nat → nat → nat
constant g : string → string → string
infix ` & `:60 := f
infix ` & `:60 := g
set_option pp.notation false
#check 0 & 1
#check "a" & "b"
#check tt & ff
notation `[[`:max l:(foldr `, ` (h t, f h t) 0 `]]`:0) := l
notation `[[`:max l:(foldr `, ` (h t, g h t) "" `]]`:0) := l
#check [[ (1:nat), 2, 3 ]]
#check [[ "a", "b", "c" ]]