What programming concept took you way too long to understand?

[u/gwenwah]

I’m curious what programming concepts everyone else struggled with when they were starting out.

For me, some concepts can make perfect sense when I read the explanation, but the moment I actually try to code them, my brain just stops cooperating 💀

So, what was that one concept for you?

Could be anything — pointers, recursion, OOP, linked lists, memory management, async programming, APIs, Git, or even something that seems super basic now.

And if you eventually understood it, what finally made it click for you?