Golang Developer
Golang Developer Interview Questions and Answers for Freshers
Q1. different types of channels in go and where we can use these channels
Types of channels in Go and their use cases
Buffered channels: Allow multiple senders to send data without blocking until the buffer is full
Unbuffered channels: Synchronize goroutines by blocking sender until receiver is ready
Bidirectional channels: Allow both sending and receiving data
Receive-only channels: Restrict channel to only receive data
Send-only channels: Restrict channel to only send data
Q2. what is concurrency and how we can achieve using go.
Concurrency is the ability to run multiple tasks simultaneously, achieving parallelism.
Go uses goroutines to achieve concurrency
Goroutines are lightweight threads managed by the Go runtime
Concurrency in Go is achieved using channels for communication between goroutines
Q3. Print 1 to 10 numbers using go routines and channels
Use go routines and channels to print numbers 1 to 10
Create a channel to communicate between go routines
Use a for loop to create 10 go routines, each printing a number
Send the numbers through the channel and print them in the main routine
Q4. implement stack if a structure is given
Implement a stack using the given structure.
Create a struct with an array to store the stack elements and an index to keep track of the top element
Implement functions like push, pop, and peek to manipulate the stack
Ensure to handle stack overflow and underflow cases
Q5. Go routines and async patterns in golang
Go routines are lightweight threads managed by Go runtime for concurrent programming. Async patterns in Golang involve using channels for communication between goroutines.
Go routines are created using the 'go' keyword followed by a function call.
Channels are used to communicate data between goroutines.
Async patterns in Golang can be implemented using channels and select statements.
Example: go func() { fmt.Println('Hello')}()
Example: ch := make(chan int) // create a channel
Q6. difference between goroot and gopath
GOROOT is the root directory where Go is installed, while GOPATH is the workspace directory where Go projects are stored.
GOROOT is where Go's standard library and tools are located
GOPATH is where your own Go projects and their dependencies are stored
You can have multiple GOPATHs to organize different projects
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