go / beginner
Snippet
Pointers: Direct Memory Access
Pointers store memory addresses rather than values. The & operator gets the address of a variable, while * dereferences a pointer to access the underlying value. Pointers are especially useful for modifying variables in functions and managing large data structures efficiently.
snippet.go
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package mainimport "fmt"func main() {count := 10ptr := &countfmt.Println("Value:", count)fmt.Println("Address:", ptr)fmt.Println("Dereferenced:", *ptr)*ptr = 20fmt.Println("New value:", count)}
Breakdown
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ptr := &count
& gets memory address of count variable
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*ptr
* dereferences pointer to get stored value
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*ptr = 20
Modifying dereferenced value changes original variable