Copying with another

The another keyword creates an independent deep copy of a value. The copy has its own memory — changes to one do not affect the other.

---

Syntax

original is 42;
copied is another original;    // separate memory, same value

copied is 100;
Print(original);  // still 42
Print(copied);    // 100

---

Why another?

In Morph, is creates an alias by default. To get a true copy, you must request one explicitly:

Statement	Behavior
y is x;	Alias — y and x share memory
y is another x;	Copy — y gets its own memory

---

Copying Objects

another works with class instances too:

v1 is Vector2(3.0, 4.0);
v2 is another v1;         // deep copy of the object

v2.x is 10.0;
Print(v1.x);  // still 3.0
Print(v2.x);  // 10.0

---

Shorthand (Without is)

The shorthand declaration form also supports another:

a 10;
b another a;    // copy without 'is'

---

When to Use another

• When you need to modify a value without affecting the original
• When passing data to a function that may mutate it
• When storing a snapshot of a value at a point in time

---

C++ Equivalent

Morph	C++
y is x;	T& y = x; (reference)
y is another x;	T y = x; (value copy)

---

Next Steps

• Move — Transfer ownership instead of copying