Golang perguntas e respostas de entrevista
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Pergunta 16. Explain the purpose of the 'context' package in Go.
The 'context' package in Go is used for carrying deadlines, cancellations, and other request-scoped values across API boundaries and between processes.
Pergunta 17. What is the purpose of the 'defer' statement in Go?
The 'defer' statement is used to ensure that a function call is performed later in a program's execution, usually for purposes such as cleanup or releasing resources.
Pergunta 18. How does Go support testing?
Go has a built-in testing package ('testing') that provides a testing framework. Tests are written in separate files with the '_test.go' suffix, and the 'go test' command is used to run tests.
Pergunta 19. Explain the difference between 'map' and 'slice' in Go.
A 'map' in Go is an unordered collection of key-value pairs, while a 'slice' is an ordered sequence of elements. Maps are used for lookups based on keys, while slices are used for ordered data.
Pergunta 20. What is the purpose of the 'sync' package in Go?
The 'sync' package in Go provides a set of primitives for managing synchronization between goroutines. It includes Mutexes, WaitGroups, and other constructs for safe concurrent programming.
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