Learn Go in 3 Hours - Interfaces
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Information Technology (IT), Architecture, Other
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University
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Practice Problem
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Hard
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10 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key difference between interfaces in Go and other languages like Java?
Go interfaces require explicit implementation.
Go interfaces do not require explicit implementation.
Go interfaces can only have one method.
Go interfaces are only used with structs.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
How do you declare an interface in Go?
Using the keyword 'struct' followed by method signatures.
Using the keyword 'interface' followed by method implementations.
Using the keyword 'type' followed by 'interface' and method signatures.
Using the keyword 'class' followed by method implementations.
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the benefit of implicit interfaces in Go?
They allow for more flexible code.
They are easier to debug.
They require less memory.
They enforce stricter type safety.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the purpose of the empty interface in Go?
To implement multiple interfaces.
To allow any type to be assigned to it.
To enforce strict type checking.
To define a type with no methods.
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What happens if a type assertion fails in Go?
The program automatically retries the assertion.
The program converts the type to a default type.
The program continues without any error.
The program panics unless handled with the comma OK idiom.
6.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the role of the 'comma OK' idiom in Go?
To convert types automatically.
To declare variables implicitly.
To check if a type assertion was successful.
To handle errors in Go programs.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
In Go, what does an interface with no methods signify?
It cannot be used in Go programs.
It can only be implemented by structs.
It is equivalent to a void pointer in C.
It is used for type conversion.
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