lean4-htt/tests/lean/241.lean
Leonardo de Moura b91e22af2b fix: fixes #241
2021-05-22 19:10:07 -07:00

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def ex1 : IO Unit := do
let mut xs : Array Nat := #[]
let xs := xs -- Error
xs := xs.push 0
IO.println xs
def ex2 : IO Unit := do
let mut xs : Array Nat := #[]
let (xs, _) := (xs, 4) -- Error
xs := xs.push 0
IO.println xs
def ex3 : IO Unit := do
let mut xs : Array Nat := #[]
match (1, 2) with
| (xs, ys) => -- Error
xs := xs.push 0
IO.println xs
def ex4 : IO Unit := do
let mut xs : Array Nat := #[]
let (xs, _) ← pure (xs, 4) -- Error
xs := xs.push 0
IO.println xs
def ex5 : IO Unit := do
let mut xs : Array Nat := #[]
let xs ← pure xs -- Error
xs := xs.push 0
IO.println xs
def ex6 : IO Unit := do
let mut xs : Array Nat := #[]
if let some xs ← pure (some 4) then -- Error
IO.println xs
else
pure ()
def ex7 : IO Unit := do
let mut xs : Array Nat := #[]
if let some xs := some 4 then -- Error
IO.println xs
else
pure ()
def ex8 : IO Unit := do
let mut xs : Array Nat := #[]
if let some xs ← pure (some 4) then -- Error
IO.println xs
else
pure ()
def ex9 : IO Unit := do
let mut xs : Array Nat := #[]
try
IO.println xs
catch
| IO.Error.userError xs => -- Error
pure ()
| _ =>
pure ()
def ex10 : IO Unit := do
let mut xs : Array Nat := #[]
try
IO.println xs
catch xs => -- Error
pure ()
def ex11 : IO Unit := do
let mut xs : Array (Nat × Nat) := #[(1,2)]
for (xs, y) in xs do -- Error
xs := xs.push (0, 0)
IO.println xs
def ex12 : IO Unit := do
let mut xs : Array Nat := #[1,2,3]
for xs in xs do -- Error
xs := xs.push 0
IO.println xs
def ex13 : IO Unit := do
let mut xs : Array Nat := #[1,2,3]
for a in [:10], xs in [1,2,3] do -- Error
xs := xs.push 0
IO.println xs