Golang 面试题与答案
相关差异对比
问题 11. Explain the difference between a pointer and a value in Go.
A pointer is a variable that stores the memory address of another variable. It allows indirect access to the value stored in that memory address. A value is the actual data stored in a variable.
问题 12. What is the purpose of the 'new' keyword in Go?
The 'new' keyword in Go is used to allocate memory for a new variable or object. It returns a pointer to the newly allocated memory.
问题 13. Explain the concept of interfaces in Go.
Interfaces define a set of methods that a type must implement to be considered as implementing the interface. It allows polymorphism in Go by enabling the use of different types that satisfy the same interface.
问题 14. What is a closure in Go?
A closure in Go is a function value that references variables from outside its body. It 'closes over' those variables, allowing the function to access them even when it is called outside the scope where they were defined.
问题 15. How does error handling work in Go?
In Go, errors are values. Functions return an error value to indicate success or failure. It's a common practice to check for errors explicitly, making the code more robust.
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