go-control-structures

Go range loops copy slice elements by value, preventing direct mutation. To correctly mutate elements in Go range loops, use index access to update the underlying slice or array directly during iteration.

A standard break inside a nested switch only exits the switch, not the outer Go loop. Use labeled breaks to correctly control flow and exit both the switch selection and the surrounding loop simultaneously.

Placing defer inside a Go loop defers execution until the function ends, causing resource accumulation. Extract per-iteration cleanup into helper functions or closures to ensure resources are released immediately.

Yes, static analysis checks during Go code reviews can flag defer statements placed inside loops. This enforces proper defer handling by advocating for extraction of per-iteration cleanup into helper functions.

Labeled breaks are needed in Go control flow when you must exit nested constructs, such as breaking out of a switch or select statement that is contained within an outer for loop.