# VARIABLE DECLARATIONS
# =====================
# simple
let a = 35
assert a == 35

let b = a + 2
assert b == 37

# assignment
let c = 3
assert c == 3

c = 5
assert c == 5

c = "boom"
assert c == "boom"

# blocks
let d = 1

begin
  assert d == 1

  let d = 2
  assert d == 2

  begin
    assert d == 2

    let d = 3
    assert d == 3

    d = -1
    assert d == -1
  end

  assert d == 2
end

assert d == 1

# multiple declaration
let e = 3
let e = 7
assert e == 7