a = [1,2];  // a has an array
b = &a;     // b points to a
*b = 2;     // derefernce b to store 2 in a
print(a);   // outputs 2
print(*b);   // outputs 2

class ref:
    def __init__(self, obj): self.obj = obj
    def get(self):    return self.obj
    def set(self, obj):      self.obj = obj

a = ref([1, 2])
b = a
print a.get()  # => [1, 2]
print b.get()  # => [1, 2]

b.set(2)
print a.get()  # => 2
print b.get()  # => 2

func()
{
    var a = 1;
    var *b = &a;
    *b = 2;
    assert(a == 2);
}

a = [1]
b = a
b[0] = 2
assert a[0] == 2

a = [1,2]  // a has an array
b = a     // b points to a
a = 2      // store 2 in a.
print(a)   // outputs 2
print(b)  // outputs [1,2]

>>> a = [1,2]
>>> id(a)
28354600

>>> b = a
>>> id(a)
28354600

>>> id(b)
28354600

# Change operations like:
b = &a

# To:
b = "a"

# And change operations like:
*b = 2

# To:
locals()[b] = 2


>>> a = [1,2]
>>> b = "a"
>>> locals()[b] = 2
>>> print(a)
2
>>> print(locals()[b])
2