Pointers and references

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Summary

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• What is a pointer?

• Declaring pointers

What is a pointer?

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A pointer is a variable that stores a memory address. You can get the memory address of a variable using the & unary operator.

Declaring pointers

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To declare a pointer, you need to use a pointer type.

var x: i32 = 42;
var p: *i32 = &x;       // p is a pointer to x
var pp: **i32 = &p;     // pp is a pointer to p