Suppose you're writing a critical system component in Go. How would you use 'defer' to ensure proper resource cleanup?
- Defer is used to delay the execution of a function until all other statements in the function have been evaluated.
- Defer is used to ensure proper resource cleanup by explicitly releasing resources before the function exits.
- Defer is used to handle errors gracefully by deferring error-checking code to the end of the function.
- Defer is used to schedule a function call to be executed when the surrounding function returns.
In a critical system component, proper resource cleanup is essential to prevent resource leaks and maintain system stability. 'Defer' in Go allows you to schedule functions to be executed when the surrounding function returns, ensuring that critical resources are properly released regardless of how the function exits (whether through normal return, panic, or early return due to error). This pattern helps manage resources efficiently and reduces the likelihood of bugs related to resource management.
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