Explain the use of the defer, panic, and recover keywords in error handling.
- Defer: Delay execution of a function until the surrounding function returns.
- Panic: Stop normal execution and begin panicking, typically used for unrecoverable errors.
- Recover: Regain control of a panicking goroutine and perform error handling.
- Defer: Execute a function immediately.
In Go, defer is used to ensure that a function call is performed later, usually for cleanup tasks. Panic is used to initiate panic and terminate a goroutine when an unrecoverable error occurs. Recover is used to regain control of a panicking goroutine, allowing it to recover gracefully by handling the panic and continuing execution. These keywords are crucial for handling errors and resource cleanup in Go programs.
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