Indirection Memes

Posts tagged with Indirection

Pointers Explained

Pointers Explained
So you've got your regular int , which is just a number minding its own business. Then you have int* , which is a pointer—basically an address that says "hey, the actual number is over there." Simple enough. But then someone decided we needed int** , a pointer to a pointer. That's pointing to something that's pointing to something else. Confusing? Sure. But wait, there's more. Enter int*** : a pointer to a pointer to a pointer. At this point you're not even sure what you're pointing at anymore. You're just following breadcrumbs through memory like some kind of deranged treasure hunt, three layers deep into indirection hell. C programmers will tell you this is perfectly normal. They're lying.

Pointers Explained

Pointers Explained
So you've got an int, which is just a regular integer minding its own business. Then you've got int*, a pointer that points to that integer's address. Then int** is a pointer to a pointer—basically pointing at the thing that's pointing at the thing. And then there's int***, which is a pointer to a pointer to a pointer, and at that point you're just showing off or you've made some deeply questionable life choices. Each level of indirection adds another layer of "wait, what am I even looking at?" The person in the foreground holding int*** has that exact facial expression—equal parts pride and existential dread. You know you've gone too far when you need a flowchart to dereference a variable. Most codebases don't need triple pointers. If yours does, either you're doing something incredibly clever or incredibly cursed. There is no in-between.

Pointer In C: The Ultimate Memory Middleman

Pointer In C: The Ultimate Memory Middleman
The perfect visual metaphor for pointer indirection in C. Just like the man in the image gesturing to people who know other people, C pointers are just memory addresses pointing to other memory addresses in an endless chain of "this references that which references something else." And just like trying to follow this convoluted explanation at a party, dereferencing multiple levels of pointers will inevitably lead to a segmentation fault and your program crashing face-first into the floor. The real memory leak is the sanity you lose along the way.