Pointers (Memory Addresses & Dereferencing) - Go Tutorial for Beginners #14

Master pointers in Go - understand memory addresses and direct value manipulation! In this lesson, you will learn: ✓ What pointers are and why they matter ✓ Address-of operator (&) ✓ Dereference operator (*) ✓ Modifying values through pointers ✓ Pass by value vs pass by pointer ✓ Nil pointers and safety checks ✓ The new() function ✓ Why Go has no pointer arithmetic ⏱️ Timestamps: 0:00 - Introduction 0:27 - Pointer Basics (& and *) 2:25 - Modifying Values via Pointers 4:18 - Pointers in Functions 6:44 - Nil Pointers & Safety 9:10 - Recap 9:40 - End 💻 Source Code: https://github.com/GoCelesteAI/go_pointers 📝 Code Highlights: // Address-of and dereference x := 42 p := &x // p holds address of x fmt.Println(*p) // dereference: prints 42 // Modify via pointer *p = 100 // x is now 100 // Pass by value - doesn't modify original func doubleValue(n int) { n = n * 2 // only changes the copy } // Pass by pointer - modifies original func doublePointer(n *int) { *n = *n * 2 // changes the original } num := 10 doublePointer(&num) // num is now 20 // Nil safety var p *int // p is nil if p != nil { fmt.Println(*p) // safe to dereference } 📺 Full Playlist: Go Tutorial for Beginners 📺 Previous: Lesson 13 - Anonymous Functions & Closures 📺 Next: Lesson 15 - Structs 👍 Like and Subscribe for more Go tutorials! #Go #Golang #Programming #Tutorial #Pointers #Memory #LearnToCode