Cloudblocks Interview Questions and Answers

Golang program for CRUDD operations on user details

• Use structs to define user details

• Implement functions for Create, Read, Update, Delete operations

• Use a map or slice to store user data

• Handle errors and input validation

• Use packages like 'fmt' and 'bufio' for input/output operations

Arrays have fixed size while slices are dynamic and can grow or shrink.

• Arrays have a fixed size determined at compile time, while slices are dynamic and can change in size during runtime.

• Arrays are passed by value, while slices are passed by reference.

• Arrays use square brackets [] for declaration, while slices use square brackets with a colon [:] to specify a range.

• Example: var arr [3]int = [1, 2, 3] // Array, var slice []int = []int{1, 2, 3} // Slice

Error handling in Golang is done using the built-in error type and the defer keyword.

• Use the built-in error type to represent errors in Go functions.

• Handle errors using if statements or the defer keyword.

• Use the panic function to terminate the program if a critical error occurs.

Concurrency in Golang allows multiple tasks to be executed simultaneously, improving performance and efficiency.

• Goroutines are lightweight threads managed by the Go runtime, allowing for concurrent execution of functions.

• Channels are used to communicate and synchronize data between goroutines, preventing race conditions.

• The 'go' keyword is used to start a new goroutine, enabling parallelism in Go programs.

Implement a search feature for a website

• Create a search bar on the website

• Implement a search algorithm to match user input with database entries

• Display search results in a user-friendly manner