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Pointers

Morph uses readable keywords address of and value of instead of & and *.

Getting a Pointer​

x is 42;
p is address of x;    // p points to x

Dereferencing​

Print(value of p);     // prints 42

Writing Through a Pointer​

value of p is 99;      // x is now 99
Print(x);              // 99

Real Example​

From Node.mx:

Init method() {
    x is 42;
    pointerValue is address of x;
    Print(value of pointerValue);     // 42
}

C++ Comparison​

MorphC++Description
p is address of x;auto p = &x;Get memory address
value of p*pDereference pointer
value of p is 99;*p = 99;Write through pointer
p is address of y; q is p;int** q = &p;Pointer alias (reference)
q is another p;int* q = p;Pointer copy

Pointer Chains​

Morph supports natural pointer chains: pp is address of address of x;

To access the value: value of value of pp (Equivalent to **pp in C++)

Next Steps​