Can a struct contain methods?
- No, a struct cannot contain methods
- Yes, a struct can contain methods as associated functions
- Yes, but only anonymous methods
- Yes, but only predefined methods
In Go, a struct can contain methods as associated functions. These methods are defined with a receiver, which allows them to be called on instances of the struct type.
_______ function is used to report memory allocations during benchmark execution.
- Allocs()
- BenchmarkAllocations()
- MemoryStats()
- ReportAllocs()
In Go benchmarking, the testing package provides the ReportAllocs() function to report memory allocations during benchmark execution, aiding in memory profiling.
Setting _______ connection limits prevents resource exhaustion in database connection pooling.
- dynamic
- fixed
- maximum
- optimized
Setting maximum connection limits prevents resource exhaustion in database connection pooling. By defining a maximum limit, the system ensures that there are not more connections than the system can handle, avoiding resource depletion.
Methods in Go enable _______ programming by allowing behaviors to be associated with data types.
- functional
- generic
- modular
- object-oriented
Methods in Go enable object-oriented programming by allowing behaviors (functions) to be associated directly with specific data types. This allows for better organization and encapsulation of code, leading to more maintainable and reusable software.
Implementing _______ can help in managing the execution flow of middleware and request handlers in a Go web application.
- Context Cancellation
- Dependency Injection
- HTTP Handlers
- Middleware Chaining
Middleware chaining involves arranging middleware functions in a specific order to control the flow of execution in a web application. This arrangement allows for the sequential execution of middleware, enabling operations like request authentication, logging, and rate limiting to occur in a controlled manner.
The _______ function is used to register a handler function for a specific HTTP pattern.
- http.Handle()
- http.HandleFunc()
- http.Listen()
- http.Register()
In Go, the correct function used to register a handler function for a specific HTTP pattern is http.Handle(). This function associates a handler function with a specific pattern, enabling routing in an HTTP server.
Database connection pooling helps in _______ database connections to improve performance.
- limiting
- managing
- optimizing
- organizing
Database connection pooling helps in limiting database connections to improve performance. By limiting the number of concurrent connections, it prevents resource exhaustion and ensures efficient utilization of database resources.
You have a slice of strings in Go, and you want to remove the last element from the slice. What method would you use?
- Using slice syntax: slice = slice[:len(slice)-1]
- Using the delete() function to remove the last element
- Using the shift() function to remove the last element
- Utilizing the pop() function
Slice syntax in Go allows for modifying slices directly. slice[:len(slice)-1] creates a new slice that excludes the last element, effectively removing it. The expression len(slice)-1 calculates the index of the last element in the slice.
In database connection pooling, what is the purpose of setting maximum connection limits?
- To improve application scalability
- To minimize resource consumption
- To prevent overloading the database server
- To reduce connection contention
Setting maximum connection limits helps prevent overloading the database server by limiting the number of concurrent connections that can be established. This prevents situations where the database becomes overwhelmed with connection requests, ensuring smoother operation and better resource utilization.
Suppose you're developing a game in Go where you need to manage different types of characters. How would you utilize structs to organize this data effectively?
- Define a base struct named Character with common attributes like name, health, etc., and then create separate structs for each character type such as Warrior, Mage, Rogue, etc., with additional fields specific to their type and behaviors.
- Implement a single struct named Character with a field to identify the character type and additional fields representing attributes, abilities, etc., which might lead to a bloated and less maintainable design.
- Use an interface named Character with methods like Attack() and Defend() and then define separate structs like Warrior, Mage, Rogue implementing this interface.
- Utilize a slice of structs named CharacterList to store characters, with each struct containing fields representing attributes and behaviors, allowing for dynamic addition and removal of characters during gameplay.
Employing a base struct for common attributes and separate structs for each character type enables a modular and organized approach to managing different characters in the game. It ensures clarity, extensibility, and ease of maintenance by encapsulating specific characteristics and behaviors within their respective structs.