Alias Semantics

In Morph, the default is assignment creates an alias — both names share the same underlying memory.

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Default: Alias

x is 10;
y is x;       // alias — y and x share memory
y is 20;
Print(x);     // 20 (x changed too!)

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The Four Memory Primitives

Keyword	Behavior	C++ Equivalent
is	Alias (shared memory)	T& y = x;
another	Deep copy (independent)	T y = x;
move	Ownership transfer	T y = std::move(x);
address of / value of	Pointer access	&x / *p

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Why Alias-by-Default?

• No unnecessary copies → faster by default
• Explicit another when you need a copy → clear intent
• Matches the language philosophy of performance-first design

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Next Steps

• Pointers — address of and value of
• Ownership — Lifetime model