lean2/tests/lean/run/t6.lean

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precedence `+` : 65
precedence `++` : 100
variable N : Type.{1}
variable f : N → N → N
variable a : N
check
let g x y := f x y,
infix + := g,
b : N := a+a,
c := b+a,
h (x : N) := x+x,
postfix ++ := h,
d := c++,
r (x : N) : N := x++++
in f b (r c)