=====================================
anonymous function
=====================================

& &1 + &2
&(&1 + &2)
&foo(&1, a, &2)

---

(source
  (unary_operator
    (binary_operator
      (unary_operator
        (integer))
      (unary_operator
        (integer))))
  (unary_operator
    (binary_operator
      (unary_operator
        (integer))
      (unary_operator
        (integer))))
  (unary_operator
    (call
      (identifier)
      (arguments
        (unary_operator
          (integer))
        (identifier)
        (unary_operator
          (integer))))))

=====================================
argument call
=====================================

& &1.some_fun
&(&1.some_fun)
& &1.(&2)

---

(source
  (unary_operator
    (call
      (dot
        (unary_operator
          (integer))
        (identifier))))
  (unary_operator
    (call
      (dot
        (unary_operator
          (integer))
        (identifier))))
  (unary_operator
    (call
      (dot
        (unary_operator
          (integer)))
      (arguments
        (unary_operator
          (integer))))))

=====================================
remote MFA
=====================================

&Mod.fun/1

---

(source
  (unary_operator
    (binary_operator
      (call
        (dot
          (alias)
          (identifier)))
      (integer))))

=====================================
remote operator MFA
=====================================

&Kernel.>=/2

---

(source
  (unary_operator
    (binary_operator
      (call
        (dot
          (alias)
          (operator_identifier)))
      (integer))))

=====================================
local MFA
=====================================

&fun/1

---

(source
  (unary_operator
    (binary_operator
      (identifier)
      (integer))))

=====================================
local operator MFA
=====================================

&>=/2
&//2

---

(source
  (unary_operator
    (binary_operator
      (operator_identifier)
      (integer)))
  (unary_operator
    (binary_operator
      (operator_identifier)
      (integer))))