Odin Rqt-close -

import "core:runtime" cleanup_my_resource :: proc(data: rawptr) handle := cast(^windows.HANDLE)data CloseHandle(handle^)

Or for a cross-platform abstraction:

Odin’s lack of automatic cleanup is a feature, not a bug. It forces you to think about resource lifetimes at every step, leading to more predictable and often more efficient software. The rqt-close pattern—whether you name it that or simply call CloseHandle directly—is the cornerstone of robust system programming in Odin. odin rqt-close

In Odin, every open deserves a close, every create a destroy. Your future self (and your operating system) will thank you. every open deserves a close

If you have dependent resources (e.g., a file mapping before the file handle), close child resources first. 3. Defer is Your Friend Odin’s defer statement is perfect for pairing allocation with release: odin rqt-close